JP2007030557A - Weather strip for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a weather strip easy to be installed in a flange part of a car body and having excellent holding property and sealability. <P>SOLUTION: This weather strip 10 for an automobile is provided with a trim part 20 having a nearly U-shaped cross section, and a seal part 40. An exterior side wall 21 is provided with a first exterior flange holding lip 24 and a second exterior flange holding lip 25 extended in this order from an opening side. An interior side wall 22 is provided with a first interior flange holding lip 26 and a second interior flange holding lip 27, which is provided close to the first interior flange holding lip 26, to be extended in this order from an opening side. The first exterior flange holding lip is extended to abut on a root of the second interior flange holding lip, and formed thicker than the second interior flange holding lip. The second interior flange holding lip is formed to be extended so that a tip thereof faces to a tip of the second exterior flange holding lip. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a weather strip for an automobile that is mounted on a flange or the like 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 a mating member such as a door or a trunk lid. .
When these weather strips are attached to the periphery of the vehicle body opening, they are attached by inserting a flange at the periphery of the vehicle body opening into the trim portion of the weather strip.

For example, as shown in FIG. 4, the seal of the opening of the rear trunk of the automobile is attached to the flange 7 provided at the front end 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 seal portion 140 that is in contact with 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 sheet metal insert 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 around the opening of the rear trunk is inserted into the trim portion 120. The trim part 120 is provided with vehicle outer flange holding lips 124, 125 and vehicle inner flange holding lips 126, 127. The flange 7 is held by these flange holding lips 124, 125, 126, 127, and sealed. While maintaining the posture of the strip 110, it prevents the flange 7 from coming off. At this time, the hollow seal portion 140 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.

The seal between the vehicle body opening periphery 6 and the weather strip 110 is sealed by bringing a body seal lip 128 provided on the outer surface of the outer side wall 121 of the trim portion 120 into contact with the surface of the vehicle body opening periphery 6. is doing.
However, the surface of the periphery 6 of the vehicle body opening is uneven in the manufacturing process of the vehicle body, or becomes a curved surface, and the body seal lip 128 does not necessarily adhere to the surface of the corner of the periphery 6 of the vehicle body opening, so that a gap is generated. There is a case.

For this reason, as shown in FIG. 4, the viscous seal material 151 is filled in the interior of the trim portion 120 with a substantially U-shaped cross section, and the tip of the flange 7 is inserted into the seal material 151. Sealing between the flange 7 and the weather strip 110 is performed (for example, refer to Patent Document 1).
However, the sealing material 151 is non-drying and difficult to handle. When the weather strip 110 is removed and reassembled for repair or the like, the sealing material 151 may cause the vehicle body opening peripheral edge 6 to become dirty or be removed from the weather strip 110. There was a case of protruding.

Therefore, it is also considered to insert a string-like synthetic resin foam into the interior of the trim portion 120 having a substantially U-shaped cross section (see, for example, Patent Document 2).
However, in the case of a foam made of string-like synthetic resin, even a foam does not have sufficient flexibility, and the amount of deformation is not large. Also, force is required for inserting the foam, and even if the tip of the flange 7 abuts after insertion, it is difficult to place the tip of the flange 7 at a predetermined position of the foam due to the reaction force.
Since the foam is held by the flange holding lips on the outside and the inside of the vehicle, when the flange 7 is inserted into the trim portion 120, the outside flange holding lip and the inside flange holding lip are pushed by the flange 7. In some cases, it is difficult to bend due to contact with the foam, and the insertion force of the trim portion 120 into the flange 7 may increase.

  Further, the flange 7 is often formed by spot welding or the like on the outer side and inner side panels of the vehicle body 1, the surface of the flange 7 has irregularities, and the number of panels to be welded is also large. As a result, the thickness of the flange 7 also changes depending on the part of the vehicle body. For this reason, when the vehicle outer flange holding lips 124, 125 and the vehicle inner flange holding lips 126, 127 are provided so as to face each other, the insertion force of the flange 7 increases or the holding lip holding force becomes insufficient. There was a case.

In addition, as shown in FIG. 5, there is a case in which a double-sided adhesive tape 150 is attached to the inner surface of the trim portion 120 and the trim portion 120 is adhered to the flange 7 with the double-sided adhesive tape 150 (see, for example, Patent Document 3). ).
In this case, when the trim portion 120 is bonded to the flange 7, the protective tape of the double-sided adhesive tape 150 is peeled off, and then the flange 7 is inserted into the trim portion 120 having a substantially U-shaped cross section. In some cases, the flange 7 cannot be inserted into the trim part 120 in contact with the double-sided adhesive tape 150. For this reason, it takes time for the mounting work, and the position of the seal portion 140 is displaced, and the sealing performance may be lowered.
In the case of FIG. 5, a sealant 151 is used as a sealing material in order to improve the sealing performance together with the double-sided adhesive tape 150.

Further, as shown in FIG. 6, a solid first car inner flange holding lip 126 is provided in the vicinity of the opening of the car inner side wall 22, and the solid second car inner flange holding lip 127 is reversed from the inside. It is formed in a long shape and holds the inner side of the flange 7, and the outer side of the flange 7 is substantially the same thickness as the first car outer flange holding lip 124 of the tapered sponge material, and the second car made of solid material. Some are held by the outer flange holding lip 125 (see, for example, Patent Document 4).
However, in this case, since the entire first vehicle outer flange holding lip 124 of the sponge material is bent and bent so as to fall down, the contact with the flange 7 is only in the vicinity of the tip, and the holding force is insufficient. It was not sufficient to secure the holding force according to the unevenness of the flange 7 and the change in the thickness of the flange 7.

Further, the seal between the vehicle body opening rim 6 and the flange 7 is sealed only by the tapered body seal lip 128 coming into contact with the vehicle body rim 6 as described above. Since it bends and bends as a whole, the contact with the periphery 6 of the vehicle body opening is only in the vicinity of the tip, and it is insufficient to deform corresponding to the concave portion or curved surface of the periphery 6 of the vehicle body opening, and the sealing property There wasn't always enough.
JP 2005-47410 A Japanese Utility Model Publication No. 63-8484 JP 2001-354081 A Japanese Utility Model Publication No. 7-4201

  SUMMARY OF THE INVENTION An object of the present invention is to provide a weather strip that can be easily mounted on a flange portion of a vehicle body and has excellent holding properties and sealing properties.

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 on 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. A first vehicle outer flange holding lip and a first rim holding a flange are arranged on the vehicle outer side wall in order from the opening side of the trim portion. Two car outer flange holding lips are extended toward the inside of the trim part, and the first car inner flange holding lip and the first car inner flange holding lip are held on the car inner side wall in order from the opening side of the trim part. The second vehicle inner flange holding lip extending toward the inside of the trim part,
The first vehicle outer flange holding lip extends so as to contact the root of the second vehicle inner flange holding lip and is formed to be thicker than the second vehicle inner flange holding lip. Is a weather strip for an automobile formed by extending so that the tip thereof faces the tip of the second vehicle outer side flange holding lip.

  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 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. A first vehicle outer flange holding lip and a first rim holding a flange are arranged on the vehicle outer side wall in order from the opening side of the trim portion. Two car outer flange holding lips are extended toward the inside of the trim part, and the first car inner flange holding lip and the first car inner flange holding lip are held on the car inner side wall in order from the opening side of the trim part. A second vehicle inner flange holding lip is extended toward the inside of the trim portion. For this reason, a flange can be stably hold | maintained with a vehicle outer side flange holding lip and a vehicle inner side flange holding lip, and a weather strip can be mounted | worn with the trim part with a rigid U-shaped cross section.

  The first vehicle outer side flange holding lip was extended so as to contact the root of the second vehicle inner side flange holding lip and formed thicker than the second vehicle inner side flange holding lip. For this reason, when the flange is inserted into the trim portion, the base side of the flange can be held together with the first vehicle interior flange holding lip, and the trim portion can be prevented from falling down. In addition, the outer flange holding lip of the first car extends long so that it contacts the base of the second car inner flange holding lip. , And bends and bends in a substantially L shape at that portion, so that the flange can be easily inserted. In addition, since the first vehicle outer flange holding lip is thicker than the second vehicle inner flange holding lip and is formed of a sponge material, the first vehicle outer flange holding lip is tilted with the root portion as the rotation center. Instead of being deformed, it bends in a substantially L shape so as to buckle at the middle part of the lip, and the bent tip has a strong force to press the flange by making surface contact with its side surface, making it difficult for the flange to come off.

  The second vehicle outer flange holding lip is formed so as to extend so that the tip thereof faces the tip of the second vehicle inner flange holding lip. Therefore, the front end of the flange can be held by the second car outer flange holding lip and the second car inner flange holding lip, and the first car outer flange holding lip and the first car inner flange holding lip that hold the root of the flange. At the same time, the trim part can be prevented from falling. Further, since the second vehicle inner flange holding lip extends from the portion adjacent to the first vehicle inner flange holding lip to the vicinity of the tip of the second vehicle outer flange holding lip, the second vehicle inner flange holding lip may fall according to the thickness of the flange. It is easy to bend easily and the flange can be easily inserted, and the resistance against the pull-out of the flange is large.

  According to the second aspect of the present invention, the body seal lip extends from the front end of the vehicle outer side wall obliquely downward so as to contact the vehicle body opening periphery, and the body seal lip curves concavely toward the vehicle body opening periphery. In addition, the body seal lip is a weather strip for automobiles formed with substantially the same thickness from the root to the tip.

In the present invention of claim 2, since the body seal lip is extended obliquely downward at the front end of the vehicle outer side wall so as to contact the periphery of the vehicle body opening, the rainwater enters the trim portion from the periphery of the vehicle body through the flange. It is possible to prevent dust, noise and the like from entering, and to seal between the periphery of the vehicle body opening and the weather strip.
Since the body seal lip is curved concavely toward the periphery of the vehicle body opening, when the body seal lip abuts on the periphery of the vehicle body opening, the tip thereof can abut in line contact. Furthermore, since the body seal lip is concavely curved toward the periphery of the vehicle body opening, the body seal lip is elastically brought into contact with the unevenness and deformation of the periphery of the vehicle body opening so that the sealing performance is good.
Further, by forming the body seal lip with substantially the same thickness from the base to the tip, the elasticity of the body seal lip is improved, the force with which the tip presses the periphery of the vehicle body opening is strong, and the sealing performance is good.

  According to a third aspect of the present invention, there is provided a weather strip for an automobile in which a sub-body seal lip is extended obliquely downward near the base of the flange at the vehicle inner front end on the opening side of the vehicle outer side wall.

  In the third aspect of the present invention, since the sub-body seal lip is extended obliquely downward near the base of the flange at the vehicle inner side end of the vehicle outer side wall, the vehicle body opening peripheral edge and the flange The sub-body seal lip can be brought into contact with the vicinity of the continuous portion at the base, and double sealing can be performed together with the body seal lip, so that the sealing performance can be further improved.

  According to a fourth aspect of the present invention, the first vehicle outer flange holding lip, the body seal lip and the sub-body seal lip are weather strips for automobiles formed of a sponge material.

  In the present invention of claim 4, since the first vehicle outer side flange holding lip, the body seal lip and the sub-body seal lip are formed of sponge material, when the trim portion is attached to the flange, the periphery of the vehicle body opening and the flange It can be flexibly deformed according to the shape, and it is easy to insert a flange and has excellent sealing properties.

  According to a fifth aspect of the present invention, the second vehicle outer flange holding lip is formed thicker than the second vehicle inner flange holding lip, and a small protrusion protruding toward the bottom wall is formed at the tip of the second vehicle outer flange holding lip. Weather strip.

  In the fifth aspect of the present invention, the second vehicle outer flange holding lip is formed to be thicker than the second vehicle inner flange holding lip and further provided with a small protrusion, so that the trim portion of the weather strip falls to the vehicle outer side. This can be prevented, and the seal portion can reliably contact and seal against a predetermined position of the mating member that closes the periphery of the vehicle body opening.

  According to a sixth aspect of the present invention, the second vehicle outer side flange holding lip and the second vehicle inner side flange holding lip are automotive weather strips formed of a solid material or a fine foam material.

  In the present invention of claim 6, since the second vehicle outer flange holding lip and the second vehicle inner flange holding lip are formed of a solid material or a fine foam material, the second vehicle outer flange holding lip and the second vehicle inner flange holding lip are formed. Thus, the flange end can be securely held, and the flange is in contact with the end of the flange, so that the insertion load of the flange does not increase.

  The present invention according to claim 7 is a weather strip for an automobile in which a cover lip that protrudes in an in-vehicle direction and covers an end of an interior material or the like is formed on an inner side surface of an inner side wall of the vehicle. It is.

  In the present invention of claim 7, since the cover lip that protrudes in the vehicle interior direction and covers the end of the interior material or the like is formed on the vehicle interior side surface of the vehicle interior side wall, the weather strip is provided in the vehicle interior after being attached to the flange. Covering the end of the garnish, panel and the like, the weather strip and the garnish, the panel, etc. are sealed, and the gap is covered to improve the appearance.

  According to the present invention of claim 8, the seal portion is a weather strip for an automobile in which a cross-section of a hollow shape having a substantially rhombic or elliptical shape and a sponge material is formed.

In the present invention of claim 8, since the seal part is formed in a hollow shape having a substantially rhomboid or elliptical cross section, and is deformed flexibly when it comes into contact with a mating member to be sealed, it is hollow. The sealing portion can be reliably brought into contact with a predetermined position and sealed without abnormal deformation. Since the cross section is substantially rhombus or oval, when the tip of the hollow portion abuts against the mating member, the bulging portion of the central portion of the approximately rhombus or oval of the hollow portion can be bent and flexibly abut.
In addition, since it is formed of a sponge material, when the tip of the flange comes into contact with the seal member, the flexibility is great, and the tip can be surely brought into contact while being deformed according to the shape of the mating member. high.

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

  In the present invention of claim 9, 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.

  The invention according to claim 10 is the weather strip for automobiles, wherein the weather strip is a trunk weather strip or a back door weather strip.

  In the present invention of claim 10, 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 therefore, between the trunk and the trunk lid, and the vehicle body opening periphery. Rain water and dust entering from between the back door can be reliably sealed, and noise entering the vehicle can be reliably prevented.

In the present invention, the first vehicle outer flange holding lip extends so as to contact the root of the second vehicle inner flange holding lip and is formed to be thicker than the second vehicle inner flange holding lip. The root can be held together with the first vehicle inner flange holding lip, and the trim portion can be prevented from falling down. In addition, since the first vehicle outer flange holding lip is long and thick, it bends and bends in a substantially L shape so that it buckles from the root to the vicinity of the center, making it easier to insert the flange. In addition, since the buckled tip side is in wide contact with the flange, the force pressing the flange is strong and the flange is difficult to come off.
Further, the second vehicle inner flange holding lip is formed so as to extend so that the tip of the second vehicle inner flange holding lip faces the tip of the second vehicle outer flange holding lip. It can hold | maintain with a 2nd vehicle inner side flange holding lip, and it can prevent that a trim part falls down. In addition, since the second vehicle inner flange holding lip extends long and sharply with a small angle, it is easy to bend so that it falls down toward the vehicle inner side wall at the base portion according to the thickness of the flange, and the flange can be easily inserted. Even when the thickness of the flange is thin, it has an acute angle with a small angle, and has a high resistance to the flange coming off.

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 cross-sectional view of a weather strip 10 before being mounted on a vehicle body. FIG. 2 shows a state in which the trunk lid 2 of the weather strip 10 attached to the rear trunk is closed, and is a cross-sectional view taken along the line AA of FIG. FIG. 3 is a schematic perspective view seen from the upper left of the automobile, and shows the relationship between the opening periphery 6 of the automobile body and the trunk lid 2 in the rear trunk.
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 40 that seals against the trunk lid 2.
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. In the inside of the vehicle outer side wall 21, the vehicle inner side wall 22, and the bottom wall 23, an insert 20b made of a metal piece bone is embedded in order to reinforce the force with which the trim portion 20 grips the flange 7. As the insert 20b, a hard member such as a hard synthetic resin can be used in addition to the metal plate, and a bone piece may be further continuous. When the vehicle outer side wall 21, the vehicle inner side wall 22, and the bottom wall 23 are formed of hard rubber or the like, the insert 20b can be omitted.

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 formed in an obliquely upward direction toward the inside of a substantially U-shaped cross section in order from the opening side as in the conventional case. Similarly, the first vehicle inner side flange holding lip 26 and the second vehicle inner side flange holding lip 27 are formed on the inner surface of the vehicle inner side wall 22 in an oblique direction toward the inside of the substantially U-shaped cross section.
Therefore, when the weather strip 10 is attached to the flange 7, the flange 7 can be stably held by the vehicle outer flange holding lips 24, 25 and the vehicle inner flange holding lips 26, 27 as will be described later.

  The first vehicle outer side flange holding lip 24 is extended so as to contact the root of the second vehicle inner side flange holding lip 27 obliquely inward from the vicinity of an opening having a substantially U-shaped cross section on the inner surface of the vehicle outer side wall 21. As will be described later, since the first vehicle inner flange holding lip 26 and the second vehicle inner flange holding lip 27 are formed close to each other, the front end of the first vehicle outer flange holding lip 24 is held at the first vehicle inner flange holding lip. It abuts on the respective bases between the lip 26 and the second vehicle inner flange holding lip 27. For this reason, when the flange 7 is inserted into the trim part 20, the tip of the flange 7 comes into contact with the vicinity of the center of the first vehicle outer side flange holding lip 24, and the holding lip 24 is buckled in a substantially L shape. The front end of the first vehicle outer side flange holding lip 24 can be bent along the lower surface of the second vehicle inner side flange holding lip 27.

  The first vehicle outer side flange holding lip 24 is formed to be thicker than the second vehicle inner side flange holding lip 27. Therefore, as described above, after the flange 7 is inserted, as shown in FIG. 2, the substantially L-shaped tip side of the first vehicle outer side flange holding lip 24 contacts the side surface (vehicle outer side surface) of the flange 7. The area can be widely contacted. Since the first vehicle outer side flange holding lip 24 has a substantially constant thickness and is thicker than the other flange holding lips, and is formed of a sponge material (EPDM sponge rubber), the insertion of the flange 7 is performed as described above. Sometimes, the tip of the flange 7 first hits the vicinity of the center of the first outer flange holding lip 24, and the holding lip 24 bends and bends in a substantially L shape so as to buckle from the base portion to the vicinity of the center portion. Therefore, the flange 7 can be easily inserted, and the front end side of the first vehicle outer side flange holding lip 24 can elastically press the flange 7 to make it difficult to remove the flange 7.

  Since the first vehicle outer side flange holding lip 24 is formed of a sponge material, when the trim portion 20 is mounted on the flange 7, even if there is a spot weld mark or a change in the number of sheet metals of the flange 7, the flange 7 can be flexibly deformed in accordance with the shape of the flange 7, the adhesiveness to the flange 7 can be maintained, the sealing performance can be secured, and the flange 7 can be easily inserted. The frictional force is large, and the trim part 20g is difficult to come off from the flange 7.

The second vehicle outer flange holding lip 25 is formed obliquely inside the trim portion 20 at a position deeper inside the vehicle outer side wall 21 than the first vehicle outer flange holding lip 24, and further, at the tip thereof toward the bottom wall 23 A small protrusion 25a that protrudes toward the front is provided, and is formed so as to extend so as to face the tip of the second vehicle inner flange holding lip 27. The small protrusion 25a at the tip of the second vehicle outer side flange holding lip 25 has a flat shape and can be held in close contact with the side surface of the flange 7 when the flange 7 is inserted as shown in FIG. .
For this reason, the front end side of the flange 7 can be held by the small protrusion 25 a at the front end of the second vehicle outer side flange holding lip 25 and the front end of the second vehicle inner side flange holding lip 27. Since the first vehicle outer side flange holding lip 24 and the first vehicle inner side flange holding lip 26 are held on the root side of the flange 7, both the front end side and the root side of the flange 7 can be held, so that the trim portion 20 is connected to the flange 7. Therefore, the hollow seal portion 40 can properly abut on a predetermined position of the trunk lid 2.

The second vehicle outer flange holding lip 25 can be formed of a solid material or a fine foam material. When it is made of solid or fine foam material, it has higher rigidity than sponge material, buckles so that it falls down with the root portion as the center of rotation without buckling in the middle of the lip, and the tip of the flange 7 is securely Can be held in. Since the second vehicle outer side flange holding lip 25 abuts on the front end side of the flange 7, only the last part of the abutment abuts when the flange 7 is inserted, so that the insertion load of the flange 7 is not increased.
In addition, when it forms with a fine foam material, weight can be reduced compared with a solid material, and it can contribute to weight reduction, and can ensure the minimum rigidity.

As shown in FIG. 1, the first vehicle inner side flange holding lip 26 extends laterally at a substantially right angle from the vicinity of an opening having a substantially U-shaped cross section on the inner surface of the vehicle inner side wall 22. For this reason, as shown in FIG. 2, when the flange 7 is inserted, it can contact | abut to the root side of the flange 7, and hold | maintain the root side of the flange 7 together with the 1st vehicle outer side flange holding lip 24. Can do.
Since the first vehicle inner flange holding lip 26 is formed of a solid material or a fine foam material as described above, the first vehicle inner flange holding lip 26 has higher rigidity than the sponge material, and is approximately L of the first vehicle outer flange holding lip 24. While assisting the deformation into a letter shape, the base side of the flange 7 can be securely held.

As shown in FIG. 1, the second vehicle inner flange holding lip 27 is adjacent to the first vehicle inner flange holding lip 26, and is a portion immediately behind the first vehicle inner flange holding lip 26 on the inner surface of the vehicle inner side wall 22. It is extended in the shape of a lip diagonally inward. The distal end of the second vehicle inner side flange holding lip 27 is formed so as to be in contact with the small protrusion 25 a at the front end of the second vehicle outer side flange holding lip 25. Thus, since the second vehicle inner side flange holding lip 27 is formed in an acute angle, relatively thin and long with a small angle with the vehicle inner side wall 22, when the flange 7 is inserted, FIG. As shown, the flange 7 is easy to bend in the direction of the vehicle inner side wall 22 according to the thickness of the flange 7 so that the flange 7 can be easily inserted. Further, as described above, the second vehicle inner side flange holding lip 27 is formed with a small acute angle and is not easily buckled against the flange 7 detachment, so that the resistance against the flange 7 is increased and the detachment is difficult. ing.
Further, as described above, since the tip of the second vehicle inner side flange holding lip 27 abuts on the tip of the flange 7, the tip side of the flange 7 is held so as to be sandwiched together with the second vehicle outer side flange holding lip 25. Can do.

  A body seal lip 28 having a relatively thick wall and a substantially uniform wall thickness as a whole is formed from the vicinity of the front end of the outer surface of the outer side wall 21 on the opening side. As shown in FIG. 1, the body seal lip 28 is formed so as to be curved concavely toward the vehicle body opening peripheral edge 6, that is, curved upwardly. Therefore, when the body seal lip 28 comes into contact with the peripheral edge 6 of the vehicle body opening, the tip can be brought into line contact, and the force pressed by the tip is large and the sealing property is good. Accordingly, rainwater, dust, noise and the like are prevented from entering the vehicle interior from the trim portion 20 through the flange 7 from the vehicle body opening periphery 6 and the space between the vehicle body opening periphery 6 and the weather strip 10 is sealed. be able to. Further, by curving concavely toward the periphery 6 of the vehicle body opening, the body seal lip 28 is deformed according to the unevenness or deformation of the periphery 6 of the vehicle body opening, and the tip is elastically contacted to ensure sealing performance. can do.

Further, as described above, the body seal lip 28 is formed with substantially the same thickness from the base to the tip. Therefore, as shown in FIG. 2, when the tip of the body seal lip 28 comes into contact with the vehicle body opening peripheral edge 6, the elasticity of the body seal lip 28 is improved, and the tip presses the vehicle body opening peripheral edge 6. Is strong and has good sealing properties.
The vicinity of the vehicle outer side wall 21 is made of solid rubber, and the tip side from the vicinity of the center is made of sponge material. Therefore, the flexibility of the body seal lip 28 is increased, and the sealing performance can be ensured by following the unevenness and deformation of the vehicle body opening peripheral edge 6.

A sub-body seal lip 29 extends obliquely downward from the vicinity of the front end of the inner surface on the opening side of the vehicle outer side wall 21. As shown in FIG. 1, the sub-body seal lip 29 is formed in a straight line, and is shorter and thinner than the body seal lip 28 and the first vehicle outer side flange holding lip 24. Therefore, when the weather strip 10 is mounted on the flange 7, as shown in FIG. 2, the curved portion of the connecting portion between the root of the flange 7 and the peripheral edge 6 of the vehicle body is curved and abuts. Since the sub-body seal lip 29 is formed to be thin, it can be deformed in close contact with the curved shape at the base of the flange 7. Rainwater or the like that has passed through can be reliably prevented from entering by the sub-body seal lip 29, can be sealed from noise, and the sealing performance can be further improved.
When the sub-body seal lip 29 is formed of a sponge material, the flexibility is improved and the sealing performance can be ensured by following the unevenness and deformation of the root of the flange 7.

A cover lip 30 is formed at the upper portion of the inner side surface of the inner side wall 22 so as to curve downward from the in-vehicle direction. After the weather strip 10 is mounted on the flange 7, the cover lip 30 is disposed so as to cover ends of a garnish (not shown), a panel (not shown) and the like provided in the vehicle interior. 10 is sealed between the garnish, the panel and the like, and the gap is covered to improve the appearance.
When the cover lip 30 is made of a sponge material, the flexibility is improved, and the sealing performance can be secured by following the change in the gap between the garnish and the panel.

  A hollow seal portion 40 is formed on the outer surface of the bottom wall 23 of the trim portion 20 so as to face upward. The hollow seal portion 40 can be formed of a sponge material having a hollow shape with a substantially rhombus, oval or substantially circular cross section. Since it is hollow, as shown in FIG. 2, when the trunk lid 2 is closed, the hollow seal portion 40 does not deform abnormally as compared with the lip shape, and reliably contacts the predetermined position of the trunk lid 2. And can be sealed. Further, when the cross section of the hollow seal portion 40 is substantially rhombus or oval, when the tip of the hollow seal portion 40 comes into contact with the trunk lid 2, the bulging portion of the central portion of the approximately rhombus or oval is bent and bent. And can be contacted flexibly.

In addition, when the hollow seal portion 40 is formed of a sponge material, when the hollow seal portion 40 comes into contact with the trunk lid 2 that is a mating member to be sealed, the hollow seal portion 40 has a large flexibility and can be reliably used according to the shape of the trunk lid 2. The tip can come into contact with the surface, and the sealing performance is high.
The hollow seal portion 40 can be formed on the outer surface of the vehicle inner side wall 22 or the vehicle outer side wall 21 according to the part where the weather strip 10 is mounted.
Further, the seal portion can be formed in a lip shape instead of a hollow shape.

When the trim portion 20 is attached to the flange 7, it is held by the vehicle outer flange holding lips 24, 24 and the vehicle inner flange holding lips 25, 25, and the weather strip 10 is stably held in its posture.
Then, the hollow seal portion 40 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.

Sponge materials such as the hollow seal portion 40, the first vehicle outer side flange holding lip 24, and the body seal lip 28 can be formed of a rubber foam having a specific gravity of 0.3 to 0.6. In this case, since it was formed of a rubber foam having a specific gravity of 0.3 to 0.6, it is rich in elasticity and flexibility, and sealability can be ensured even when used for a long time.
Further, since sealant or the like is not enclosed in the trim portion 20, even if the weather strip 10 is removed and reassembled, the flange 7 and the like are not soiled and the sealing performance is not impaired.

  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 portion to be attached to the corner portion is formed by molding, and the straight portions 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.

1 is a cross-sectional view of a weather strip according to an embodiment of the present invention. FIG. 4 shows an embodiment of the present invention, and is a cross-sectional view when a weather strip is mounted on a vehicle body, and is a cross-sectional view along the line AA in FIG. 3. 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

2 Trunk lid 6 Car body opening periphery 7 Flange 10 Weather strip 20 Trim 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 25a Small protrusion 26 First Car interior flange retaining lip 27 Car interior flange retaining lip 28 Body seal lip 29 Subbody seal lip 30 Cover lip 40 Seal part (hollow seal part)

Claims (10)

In an automobile weather strip that is attached to a flange on 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 integrally formed with the trim portion and comes into contact with a mating member to form a peripheral edge of the vehicle body opening. And a sealing portion that seals 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, and a first vehicle outer flange that holds the flange in order from the opening side of the trim portion on the vehicle outer side wall. A holding lip and a second vehicle outer flange holding lip extend toward the inside of the trim portion, and a first vehicle inner flange holding lip that holds the flange in order from the opening side of the trim portion on the vehicle inner side wall. And a second vehicle inner flange holding lip in the vicinity of the first vehicle inner flange holding lip and extending toward the inside of the trim part,
The first vehicle outer flange holding lip extends so as to contact the root of the second vehicle inner flange holding lip, and is formed to be thicker than the second vehicle inner flange holding lip. A weather strip for automobiles, wherein the inner flange holding lip is formed to extend so that the tip thereof faces the tip of the second outer flange holding lip.   A body seal lip is extended obliquely downward from the vehicle outer front end of the vehicle outer side wall so as to contact the vehicle body opening periphery, and the body seal lip is bent concavely toward the vehicle body opening periphery. 2. The automobile weather strip according to claim 1, wherein the body seal lip is formed with substantially the same thickness from the base to the tip.   The automobile weather strip according to claim 1 or 2, wherein a sub-body seal lip is extended obliquely downward to the vicinity of the base of the flange at the vehicle interior front end on the opening side of the vehicle exterior side wall.   The automobile weather strip according to any one of claims 1 to 3, wherein the first vehicle outer flange holding lip, the body seal lip, and the sub-body seal lip are formed of a sponge material.   5. The second vehicle outer flange holding lip is formed to be thicker than the second vehicle inner flange holding lip, and a small protrusion protruding toward the bottom wall is formed at a tip of the second vehicle outer flange holding lip. A weather strip for automobiles according to any one of the above.   The automobile weather strip according to any one of claims 1 to 5, wherein the second vehicle outer flange holding lip and the second vehicle inner flange holding lip are formed of a solid material or a fine foam material.   The automobile weather strip according to any one of claims 1 to 6, wherein a cover lip is formed on an inner side surface of the inner side wall of the vehicle so as to protrude in an in-vehicle direction and cover an end of an interior material or the like.   The automobile weather strip according to any one of claims 1 to 7, wherein the seal portion is formed of a sponge material in a hollow shape having a substantially rhombic or elliptical cross section.   The automobile weather strip according to any one of claims 1 to 8, 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 9, wherein the weather strip is a trunk weather strip or a back door weather strip.