JP4609716B2 - Automotive door weather strip - Google Patents

Description

  The present invention relates to a door weather strip mounted on the outer periphery of an automobile door.

As shown in FIG. 8, an automobile door is manufactured by integrally manufacturing a door panel 1 and a door frame 2 by welding or the like, and then a door glass or a door glass lifting mechanism is attached to the interior of the door. The door weather strip 110 was attached to the door. As shown in FIG. 7, the door weather strip 110 is attached to the outer periphery of the door panel 1 and the door frame 2 in order to seal the space between the automobile door composed of the door panel 1 and the door frame 2 and the vehicle body opening periphery 6 of the vehicle body. It was done.

  As shown in FIG. 9, the seal between the automobile door and the vehicle body opening periphery 6 is attached to the door weather strip 110 attached to the outer periphery of the door frame 2 and / or the flange 7 of the vehicle body opening periphery 6. The opening weather strip 170 is used. The seal between the door glass 5 and the door is made by a glass run 160 attached to the channel 3 on the inner periphery of the door frame 2.

The glass run 160 is attached to the channel 3 and accommodates the end portion of the door glass 5 in a substantially U-shaped cross section composed of the vehicle outer side wall 161, the bottom wall 163, and the vehicle inner side wall 162, and the vehicle outer side wall 161 and the vehicle inner side. A vehicle outer side seal lip 164 and a vehicle inner side seal lip 165 extending from the front end of the side wall 162 are brought into contact with the vehicle outer side surface and the vehicle inner side surface of the door glass 5 for sealing.
The opening weather strip 170 attached to the flange 7 at the periphery 6 of the vehicle body opening is attached to the flange 7 by a trim portion 171 having a substantially U-shaped cross section, and the hollow seal portion 172 is attached to the inner surface of the door bulge portion 2 a of the door frame 2. It is made to contact and seal.

The door weather strip 110 attached to the door frame 2 of the door and the outer peripheral part of the door panel 1 is composed of an attachment base 121 and a seal part 122 formed integrally therewith, and the seal part 122 is a hollow seal part 123. The seal lip portion 124 is configured. The attachment base 121 is fixed to the door frame 2 by being fitted into the retainer 4 attached to the outer periphery of the door frame 2. At this time, the seal lip portion 124 is in contact with the most distal end portion of the vehicle body opening periphery 6 to seal the space between the vehicle body opening periphery 6 and the door frame 2.
At that time, the hollow seal portion 123 is in contact with the bulging portion on the inner side of the vehicle rather than the portion with which the seal lip portion 124 of the vehicle body opening periphery 6 is in contact, and the space between the door frame 2 and the vehicle body opening periphery 6 is 2. Heavyly sealed.

Further, the door weather strip 110 often has a different cross-sectional shape between the portion attached to the door frame 2 and the portion attached to the door panel 1, and therefore, the vicinity of the joint portion between the door frame 2 and the door panel 1. Thus, the door weather strip 10 is joined by a connecting portion 120 formed by molding.
Further, when the door frame 2 is assembled to the door panel 1, the door frame 2 is welded at a belt line 1 b which is an upper side portion of the door panel 1. As shown in FIG. 10, in the joint portion between the door frame 2 and the belt line 1 b, the welded portion is covered by the connection portion 120 of the door weather strip 110, so Is extended (see, for example, Patent Document 1 and Patent Document 2).

In this case, in order to fix the cover member 130 to the door frame 2 or the door panel 1, the double-sided adhesive tape 136 is adhered to the back surface of the cover member 130 and the cover member 130 is bonded to the door frame 2 or the door panel 1. .
However, since the cover member 130 is formed of a soft material, when the door weather strip 110 is attached, the cover member 130 is deformed or shaken to attach the double-sided adhesive tape 136 to the door frame 2 or the door panel. In some cases, it was difficult to adhere to a predetermined portion of 1. In addition, even after bonding, the tip of the cover member 130 may be peeled off from the door panel 1 due to its softness, and the appearance is not good.
JP 2004-17904 A JP 2004-42726 A

  Therefore, an object of the present invention is to provide an automotive door weather strip that can securely attach a cover member that covers a joint portion between a door frame and a door panel at a predetermined position and prevent peeling of the front end of the cover member. It is what.

In order to solve the above-mentioned problems, the present invention of claim 1 is an automobile door weather strip that is mounted on the outer periphery of a door frame and a door panel of an automobile door and seals between the door and the periphery of the vehicle body opening of the automobile.
The door weather strip has a linear portion formed by extrusion molding, and a mold forming portion that connects the linear portions, and the mold forming portion includes a corner portion that is attached to a corner of the door frame, a door frame, Having a connecting part to be attached to the connecting part with the door panel;
The connecting portion includes a mounting base that is attached to the door frame or the door panel, and a seal portion that is formed on the mounting base and seals between the door frame and the door panel and the periphery of the vehicle body opening, and extends from the mounting base to the door. The cover member has a cover member that covers the connection portion between the frame and the door panel. The cover member has an insert embedded therein, the insert is exposed from the cover member, and the insert is inserted into the exposed portion of the insert in an L-shaped cross section from the back surface of the insert. An automotive door weather strip in which a locking portion is formed and an insert locking portion is locked to the tip of a door panel .

  According to the first aspect of the present invention, there is provided an automotive door weather strip that is mounted on the outer periphery of a door frame and a door panel of an automobile door and seals between the door and the periphery of the opening of the vehicle body of the automobile. And a molding part that connects the linear part, and the molding part is attached to a corner part that is attached to a corner of the door frame, and a connection part between the door frame and the door panel. Connection part. For this reason, the outer periphery of the door frame and the door panel of the automobile door can be sealed, and the linear portion and the connecting portion can be sealed with a mold-forming portion adapted to the connecting portion between the corner of the door frame and the door panel. In the present application, the linear portion is formed in an elongated shape in the longitudinal direction by extrusion molding, and is attached by being slightly curved with a large curvature in addition to the portion that is linearly attached. It includes a part.

The connecting portion includes a door base and a mounting base that is attached to the door panel, and a sealing portion that is formed on the mounting base and seals between the door frame and the door panel and the periphery of the vehicle body opening. It is possible to surely seal between the door frame and the door panel by reliably contacting the periphery of the vehicle body opening facing the connecting portion of the frame and the door panel.
In addition, since the cover member extends from the mounting base and covers the connection portion between the door frame and the door panel, the connection portion where the door frame and the door panel are welded or the like may not be visible from the vehicle interior. Can improve aesthetics.

Since the cover member has the insert embedded therein, the cover member can be formed with a soft material and the shape is stable, and the connection portion between the door frame and the door panel can be reliably covered.
The insert has its tip exposed from the cover member, and an insert locking portion having an L-shaped cross section from the back surface of the insert is formed on the exposed portion of the insert, and the insert locking portion is locked to the tip of the door panel. When the door weather strip is attached to the door frame and the door panel, the insert locking portion formed to extend in an L-shaped cross section is inserted from above the front end of the door panel. Only, the cover member can be fixed and is easy to mount. Further, the tip of the cover member is securely held at a predetermined position, and is not peeled off from the door frame or the door panel.

  According to a second aspect of the present invention, there is provided a door weather strip for an automobile, wherein the exposed portion of the insert is covered with a door trim attached to the door panel after being attached to the door.

  In the present invention of claim 2, since the exposed portion of the insert is covered with the door trim mounted on the door panel after being mounted on the door, the exposed portion of the insert can be made invisible from the vehicle interior, and the aesthetics are improved.

According to a third aspect of the present invention, the insert is an automotive door weather strip formed of a hard synthetic resin.

In the third aspect of the present invention, since the insert is formed of a hard synthetic resin, it does not cause any noise even if it comes into contact with the door panel made of sheet metal, no abnormal noise is generated, and it is exposed from the cover member. It can be used stably for a long time without rusting. Also, if the cover member is made of the same material as the cover member, for example, the cover member is made of an olefin-based thermoplastic elastomer and the insert is made of an olefin-based polypropylene resin, the cover member is welded by heat at the time of molding of the cover member, and adhesion is improved. Good.

According to a fourth aspect of the present invention, the insert is an automotive door weather strip in which a front end is locked to the door panel by an insert locking portion and a root is attached by a clip.

In the present invention of claim 4 , since the tip of the insert is locked to the door panel by the insert locking portion and the root is attached by the clip, the insert is stably and securely fixed, and the cover member is held in a predetermined position. Thus, the cover member can reliably cover the joint portion between the door frame and the door panel. Moreover, it can mount | wear easily by only inserting a clip in a door panel.

According to the fifth aspect of the present invention, the seal portion includes a seal lip portion that is formed in a lip shape and abuts against a side edge on the vehicle outer side of the periphery of the vehicle body opening portion, and a seal lip portion that is formed in a hollow shape on the periphery of the vehicle body opening portion. An automotive door weather strip having a hollow seal portion that slightly abuts the inside of the vehicle from the contacting portion.

According to the fifth aspect of the present invention, the seal portion is formed by a seal lip portion that is formed in a lip shape and abuts against a side edge of the vehicle body opening periphery, and a seal lip portion that is formed in a hollow shape and is formed at the periphery of the vehicle body opening portion. And a hollow seal portion that is slightly in contact with the vehicle inner side than the contacting portion. For this reason, the seal lip can seal between the side edge of the vehicle outer periphery at the periphery of the vehicle body opening and the door frame. It is possible to seal between the door frame and double seal.

According to a sixth aspect of the present invention, the connecting portion is an automobile door weather strip that is integrally connected to the linear portion when the connecting portion is molded.

In the present invention of claim 6 , the connecting portion is formed by molding, and the linear portion is inserted into the mold and integrally connected at the time of molding, so that the connecting portion and the linear portion are strong. Can be glued.

Since the cover member of the door weather strip has an insert embedded therein, even if the cover member is formed of a soft material, the shape is stable and the connection portion between the door frame and the door panel can be reliably covered. An insert is embedded in the cover member, and the tip of the insert is exposed from the cover member, and an insert locking portion is formed in an L-shaped cross section from the back surface of the insert in the exposed portion, and the insert locking portion is locked to the tip of the door panel. Therefore , the insert locking portion can be locked to the front end of the door panel, the front end of the cover member is not peeled off from the door frame and the door panel, and it is excellent in appearance and exposed to the front end of the cover member. When the door weather strip is attached to the door frame and the door panel, the insert locking portion formed by extending the L-shaped cross section is inserted from above the front end of the door panel. The cover member can be fixed and is easily mounted.

Hereinafter, embodiments of the present invention will be described with reference to FIGS.
FIG. 7 is a side view of an automobile to which the door weather strip 10 of the present invention is attached. The door weather strip 10 is attached to the outer periphery of a door including a door panel 1 and a door frame 2 of an automobile. In the present embodiment, the door weather strip 10 attached to the front door will be described, but the present invention can be similarly applied to the door weather strip 10 attached to the rear door.

  FIG. 8 is an assembly view of the door frame 2 and the door panel 1 of the front door. The front door is assembled by inserting the tip of the door frame 2 into the door panel 1, and the door frame 2 is welded to the door panel 1 at the belt line 1 b that is the upper side of the door panel 1. For this reason, the welded portion has irregularities and does not look good, and is thus covered by the door weather strip 10 attached to the door panel 1 and the door frame 2.

FIG. 6 is a front view of the door weather strip 10 attached to the door panel 1 and the door frame 2.
The door weather strip 10 includes a linear portion 11 formed by extrusion molding and a mold forming portion 11 formed by molding, and is formed in an annular shape so as to be attached to the outer periphery of the door. The door weather strip 10 can be omitted for the lower side of the door panel 1. In this case, it is not a ring but a ring with a part missing. The linear portion 11 includes an upper side portion of the door frame 2, a vertical side portion on the rear side, and a portion attached to the outer periphery of the door panel 1. The mold forming part 11 is formed of a corner part 13 attached to a corner of the door frame 2 and a connection part 20 attached to a connection part between the door panel 1 and the door frame 2.

As shown in the upper part of FIG. 5, the linear portion 11 of the door weather strip 10 attached to the upper side portion and the vertical side portion of the door frame 2 includes an attachment base portion 15 attached to the door frame 2 and its attachment base portion. 15 is formed of a seal lip portion 17 formed on the vehicle outer side of the upper surface of 15 and a hollow seal portion 16 formed on the vehicle inner side of the upper surface of the attachment base portion 15.
The seal lip portion 17 is formed in a substantially square cross section, and its tip abuts against the outermost side edge of the vehicle body opening periphery 6 to seal between the vehicle body opening periphery 6 and the door frame 2. The hollow seal portion 16 can be in contact with a portion on the inner side of the vehicle slightly from the portion where the seal lip portion 17 of the vehicle body opening periphery 6 contacts, and can seal between the vehicle body opening periphery 6 and the door frame 2. The seal lip portion 17 can be double sealed.
A back seal lip 18 is formed at the base of the seal lip 17.

As shown in the lower part of FIG. 5, the linear portion 11 of the door weather strip 10 that is attached to the door panel 1 is formed on the outer side of the mounting base 15 that is attached to the door panel 1 and the upper surface of the mounting base 15. The rear seal lip 18 and the hollow seal portion 16 formed on the inner side of the upper surface of the mounting base portion 15 are formed.
The rear seal lip 18 is formed so as to protrude to the outside of the vehicle in the same manner as that attached to the door frame 2, and the tip thereof abuts the inner surface of the protruding edge portion of the door frame 2. The hollow seal portion 16 can be in contact with a vehicle inner side portion of the vehicle body opening periphery 6 to seal between the vehicle body opening periphery 6 and the door panel 1.
The back seal lip 18 is continuously formed from the linear portion 11 attached to the door frame 2 to the linear portion 11 attached to the door panel 1 via the connecting portion 20.

The corner portion 13 is formed at the corner on the rear side of the door frame 2 in the front door. When the upper side portion and the vertical side portion are formed of rubber simultaneously with the molding, they are bonded by vulcanization or thermoplastic. When formed of an elastomer or a soft resin, they are connected by welding with a molten resin.
Since the corner of the door frame 2 has an acute angle, the corner 13 is formed corresponding to the angle.

The connection part 20 with which the connection part of the door panel 1 and the door frame 2 is mounted | worn is demonstrated based on FIGS. 1-4. The connecting portion 20 is formed at a portion corresponding to the connecting portion between the door frame 2 and the door panel 1 on each of the front side and the rear side. The connecting portion 20 on the rear side will be described as an example.
FIG. 1 is a perspective view of the connecting portion 20 viewed from the back side, and FIG. 2 is a perspective view of the connecting portion 20 viewed from the front side. FIG. 3 is a cross-sectional view taken along line BB in FIG. FIG. 4 is a perspective view of the connecting portion 20 of another embodiment as viewed from the back side.

The connecting portion 20 is formed by molding, and as shown in FIG. 1, an attachment base 21 formed continuously with the same cross-sectional shape as that of the linear portion 11 attached to the door frame 2, and an attachment base The seal portion 22 is formed on the outer side of the upper surface of the vehicle 21. The seal portion 22 is formed of a seal lip portion 24 and a hollow seal portion 23 formed on the inner side of the upper surface of the attachment base portion 21.
The attachment base 21 is formed with a core take-out hole 21b for taking out the mold core at the time of molding.

The seal lip portion 24 is formed in a substantially U-shaped cross section, and a tip of the seal lip portion 24 comes into contact with the outermost end portion of the vehicle body opening periphery 6 to seal between the vehicle body opening periphery 6 and the door frame 2. The hollow seal portion 23 can be in contact with a portion on the inner side of the vehicle slightly from the portion where the seal lip portion 24 is in contact with the periphery 6 of the opening of the vehicle body to seal between the periphery 6 of the opening of the vehicle body and the door frame 2. In addition, the sealing lip portion 24 can be double sealed.
The seal lip portion 24 is formed only in the connection portion 20 and is not continuous with the linear portion 11 attached to the door panel 1.

  A cover member 30 is extended from the side end on the vehicle inner side of the mounting base 21 in a substantially L-shaped cross section. The cover member 30 extends to cover the door frame 2 at a substantially right angle from the front end of the first cover piece 31 and the first cover piece 31 as two sides each having a substantially L-shaped cross section. The second cover piece 32 is provided. For this reason, the cover member 30 covers the connecting portion where the door frame 2 is inserted into the door panel 1 and is welded or the like, so that it cannot be seen from the passenger compartment, and the appearance is improved.

An insert 33 is embedded in the cover member 30. For the insert 33, a hard synthetic resin, for example, hard polyethylene, hard polypropylene, polyamide resin, a metal plate, or the like can be used.
The insert 33 may be embedded only in the second cover piece 32. However, when the insert 33 continuous in both the first cover piece 31 and the second cover piece 32 is embedded, the shape retention of the cover member 30 is shifted and stabilized. Become.

When the insert 33 is formed of a hard synthetic resin, no abnormal noise is generated even when it comes into contact with the door panel 1 made of sheet metal. Moreover, even if the insert 33 is exposed from the cover member 30, it does not rust, the appearance does not deteriorate, and it can be used stably for a long time. In addition, when the cover member 30 is made of the same material, for example, the cover member 30 is formed of an olefin-based thermoplastic elastomer, and the insert 33 is formed of an olefin-based polypropylene resin, the cover member 30 can be welded by heat during molding, Good adhesion.
When the cover member 30 is formed of EPDM sponge rubber or the like, the insert 33 is made of polyamide resin or sheet metal having a high melting point that is not deformed or melted by heat at the time of rubber vulcanization.

  The insert 33 is formed so as to be exposed from the tip of the second cover piece 32, and an insert locking portion 34 is formed on the back surface of the exposed portion. As shown in FIG. 3, when the door weather strip 10 is attached to the door frame 2 and the door panel 1, the insert locking portion 34 exposed at the tip of the second cover piece 32 of the cover member 30 is used as shown in FIG. The first belt line 1b is engaged and locked. As a result, the tip of the second cover piece 32 does not rip off from the door frame 2 and the door panel 1 and is not peeled off.

  The insert locking portion 34 formed on the back surface of the exposed portion of the insert 33 can be formed in a bowl shape by extending downward from the back surface of the insert 33 in an L-shaped cross section. In this case, when the door weather strip 10 is attached to the door frame 2 and the door panel 1, the insert locking portion 34 formed by extending downward in an L-shaped cross section is formed at the end of the belt line 1 b of the door panel 1. The cover member 30 can be fixed only by inserting from above, and mounting is easy.

  After the cover member 30 is mounted on the belt line 1 b of the door panel 1, as shown in FIG. 2, the door trim 40 is mounted from the inside of the door panel 1, and the exposed portion of the insert 33 is covered by the door trim 40. This makes it possible to hide the exposed portion from the passenger compartment, improving the aesthetic appearance.

  In addition, when attaching the cover member 30 to the door panel 1, in addition to said insert latching | locking part 34, as shown in FIG. 4, the base side of the insert 33 can be attached to the door panel 1 using a clip. . In this case, the clip 35 can be formed integrally with the insert 33. Further, the insertion hole of the clip 35 is provided on the base side of the insert 33, and the clip 35 formed separately from the insert 33 can be inserted into the insertion hole and the attachment hole provided in the door panel 1.

  In this case, since the tip of the insert 33 is locked to the door panel 2 by the insert locking portion 34 and the base is mounted and fixed by the clip 35, the insert 33 is fixed stably and reliably. Therefore, the cover member 30 is held at a predetermined position, and the cover member 30 can reliably cover the joint portion between the door frame 2 and the door panel 1. Moreover, it can mount | wear easily by only inserting the clip 35 in the door panel 1. FIG.

  In addition, although the connection part 20 demonstrated the form connected simultaneously with the linear part 11 at the time of a shaping | molding, the connection part 20 may carry out a die shaping | molding alone. In this case, after molding, the respective tips of the connecting portion 20 and the linear portion 11 can be inserted and bonded together. For this reason, the molding of the connecting portion 20 is easy.

Next, a method for manufacturing the door weather strip 10 will be described. The door weather strips for automobiles such as the door weather strip 10 for the front door 1, the door weather strip for the rear door, and the back door weather strip are manufactured in substantially the same manner. The description will be made by taking the strip 10 as an example.

  In the molding of the linear portion 11 of the door weather strip 10, a synthetic rubber, a thermoplastic elastomer, or a soft synthetic resin is used as a molding material. For example, EPDM rubber is used for synthetic rubber, and polyolefin-based thermoplastic is used for thermoplastic elastomer. For elastomers and soft synthetic resins, soft polyethylene, soft vinyl chloride and the like are used. In order to improve flexibility, it is preferable to foam these materials and use them as sponge materials.

  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.

Next, the molding of the corner portion and the connecting portion by molding is performed by cutting the extruded molded member manufactured as described above into a predetermined dimension, and molding the end portion of the cut extruded portion into the molded portion of the corner portion. A sponge material or a solid material, which is sandwiched between molds and forms a molding part, is injected into the mold cavity. The cross-sectional shape of the molded part is substantially the same as the cross-sectional shape of the extruded part. It is preferable to use the same type of molding material as that used for the extruded part. In the case of synthetic rubber, the mold is poured into a mold, and then the mold is heated to vulcanize and foam. At this time, since the extrusion molding part and the molding part can be vulcanized and bonded using the same material or the same kind of material, they are integrally fixed. In the case of a thermoplastic elastomer or a soft synthetic resin, since the injected material is melted when injected into the mold, the extruded part and the molded part are integrally fused by the heat and pressure.
As described above, when the connecting portion 20 and the linear portion 11 are not die-connected, only the connecting portion 20 is molded separately.

It is the perspective view which looked at the connection part of the door weather strip which is embodiment of this invention from the back side. It is the perspective view which looked at the connection part of the door weather strip which is embodiment of this invention from the front side. It is sectional drawing along the BB line in FIG. 1 of the door weather strip which is embodiment of this invention. It is the perspective view which looked at the connection part of the door weather strip which is other embodiment of this invention from the back side. It is a perspective view which isolate | separates the connection part and linear part of the door weather strip which are embodiment of this invention, and shows a joining state. It is a front view of the whole door weather strip of this invention. It is a side view of a motor vehicle. It is an assembly figure of the door frame and door panel of an automobile door. FIG. 8 is a cross-sectional shape taken along line AA of FIG. 7 in a state where a conventional door weather strip is attached to a door edge of an automobile. It is a perspective view of the connection part of the conventional door weather strip.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door panel 2 Door frame 6 Car body opening part periphery 10 Door weather strip 11 Linear part 12 Molding part 20 Connection part 21 Mounting base 22 Seal part 23 Hollow seal part 24 Seal lip part 30 Cover member 33 Insert 34 Insert latching part

Claims (6)

In an automobile door weather strip that is mounted on the outer periphery of a door frame and door panel of an automobile door and seals between the door and the periphery of the vehicle body opening of the automobile,
The door weather strip includes a linear portion formed by extrusion molding, and a mold forming portion that connects the linear portion, and the mold forming portion includes a corner portion that is attached to a corner of the door frame, , Having a connecting portion to be attached to the connecting portion between the door frame and the door panel,
The connection portion has a mounting base portion to be attached to the door frame or the door panel, a seal portion formed on the mounting base portion to seal between the door frame and the door panel, and a vehicle body opening peripheral edge of the automobile, and the mounting base portion. And a cover member that covers a connecting portion between the door frame and the door panel. The cover member has an insert embedded therein, and the insert is exposed at the tip from the cover member and the exposed portion of the insert. A door weather strip for automobiles , wherein an insert locking portion is formed in an L-shaped cross section from the back surface of the insert, and the insert locking portion is locked to the tip of the door panel .   2. The automobile door weather strip according to claim 1, wherein the exposed portion of the insert is covered with a door trim mounted on the door panel after being mounted on the door. The automobile door weather strip according to claim 1 or 2 , wherein the insert is made of a hard synthetic resin. It said insert tip to the door panel is engaged with the insert retaining portion, automotive door weather strip according to any one of claims 1 to 3 base is mounted with a clip. The seal portion is formed in a lip shape and is slightly inward of the vehicle from the seal lip portion that is in contact with the side edge on the vehicle outer side of the periphery of the vehicle body opening, and the portion that is formed in a hollow shape and in contact with the seal lip portion on the periphery of the vehicle body opening. The automobile door weather strip according to any one of claims 1 to 4 , further comprising a hollow seal portion that comes into contact with the vehicle. The automobile door weather strip according to any one of claims 1 to 5 , wherein the connection portion is integrally connected to the linear portion when the connection portion is molded.