JP4924894B2 - Door weather strip - Google Patents

Description

The present invention relates to a door weather strip for an automobile that seals between the door of the automobile and the periphery of the opening of the vehicle body.

As shown in FIG. 8, the seal between the door 1 of the automobile and the peripheral edge 6 of the vehicle body is a door weather strip 110 attached to the outer periphery of the door frame 2 provided on the outer peripheral portion of the door 1 and / or This is done by an opening weather strip attached to the flange at the periphery 6 of the vehicle body opening. The seal between the door glass 5 and the door 1 is made by a glass run attached to the channel 3 on the inner periphery of the door frame 2.

  Conventionally, as shown in FIG. 9, the door weather strip 110 attached to the outer periphery of the door frame 2 includes a mounting base portion 111, a hollow seal portion 114 and a seal lip portion 116 integrally formed on the upper surface thereof. The The mounting base 111 is fixed to the door frame 2 by being fitted into a U-shaped retainer portion 155 attached to the outer peripheral portion of the door frame 2. When the door is closed, the seal lip 116 contacts the outermost side edge of the vehicle body opening periphery 6 to seal the gap between the outer peripheral edge of the door frame 2 and the vehicle body opening periphery 6. At that time, the hollow seal portion 114 is in contact with the bulging portion on the inner side of the vehicle rather than the portion where the seal lip portion 116 of the vehicle body opening periphery 6 is in contact, and seals between the door 1 and the vehicle body opening periphery 6. ing.

  In recent years, hidden type doors are often used due to design requirements. However, in the hidden type doors, the width of the side edge of the door frame 2 outside the vehicle is narrowed so that the door 1 and the periphery of the opening of the vehicle body In order to reduce the space between the door weather strip 210 and the door weather strip 210, the width of the outer side wall 2d of the outer panel 2a of the door frame 2 as shown in FIG. ing.

For this reason, as a structure for attaching the door weather strip 210, there is a structure in which the exterior molding wall 2d portion of the outer panel 2a of the door frame 2 is reduced and the door molding 250 in which the door molding and the retainer unit are integrated is attached to the door frame 2. is there. In this case, the door weather strip 210 is formed so as to be separated from the outer weather strip 212 and the inner weather strip 213 so that the outer weather strip 212 is made smaller, and the door molding 250 is formed. There is something to install. The sealing portion of the outer weather strip 212 is also formed in a small lip shape as the sealing lip portion 216, and the inner weather strip 213 is lowered downward on the inner side of the door frame 2 to be mounted on the inner side of the vehicle. Some are attached with a base 211 and sealed with a hollow seal 214 (see, for example, Patent Document 1).

In this case, in order to attach the outer weather strip 212 to the door frame 2, the outer outer mounting base 221 is formed of a solid material at the upper side and the vertical side, and the door molding 250 is bent and fitted into a retainer portion 255. It was. However, since the corner portion is formed by molding, the sealing lip portion 216 is inevitably formed of a sponge material in consideration of sealing properties, and the vehicle exterior mounting base portion 221 of the door weather strip 210 is a solid material. It is difficult to form with.

For this reason, as shown in FIG. 11 and FIG. 12, there is a corner portion in which the insert member 350 is embedded in the corner portion of the door weather strip 310 (see, for example, Patent Document 2 and Patent Document 3). However, in order to attach the door weather strip 310 in which the insert member 350 is embedded, a protrusion 351 for fixing is provided on the insert member 350, and the door frame 2 requires an attachment hole for fitting the protrusion 351. Become. Further, in the door weather strip 210 having the vehicle exterior weather strip 212 and the vehicle interior weather strip 213 as shown in FIG. 10, the dimensions of the insert member 350 are short, and a sufficient reinforcing effect cannot be obtained.
JP 2002-307952 A JP 2004-284446 A JP 2000-351324 A

  SUMMARY OF THE INVENTION An object of the present invention is to provide an automotive door weather strip in which a door weather strip is easily and surely attached to a corner portion of a door frame and the door weather strip is difficult to come off.

In order to solve the above problems, the present invention of claim 1 is a door weather strip for attaching a door weather strip for sealing between a door of an automobile and a periphery of a vehicle body opening to the outer periphery of the door frame of the door.
The door weather strip is formed by extrusion molding from an upper side portion attached to the upper side of the door frame, a vertical side portion attached to the vertical side of the door frame, and a corner portion connecting the upper side portion and the vertical side portion by molding. Become
The upper side, the vertical side, and the corner are each attached to the vehicle exterior part of the frame, and are attached to the vehicle exterior weatherstrip that seals between the vehicle exterior at the periphery of the vehicle body opening and the vehicle interior part of the door frame. A vehicle interior weather strip that seals between the vehicle interior opening periphery and a weather strip connection portion that integrally connects the vehicle exterior weather strip and the vehicle interior weather strip,
The exterior weather strip is formed by an exterior exterior base that is attached to the door frame or door molding and an exterior seal portion that abuts the periphery of the vehicle body opening when the door is closed,
On the vehicle outer side mounting base on the upper side and the vertical side, a vehicle outer side mounting base core portion made of solid material is formed, and the vehicle outer side mounting base core portion is extended to near the corner of the corner portion,
The corner is entirely made of sponge material,
The door weather strip of either the upper side or the vertical side is connected to the cut end and the corner, leaving the outer weather strip longer than the inner weather strip,
The other door weather strip of the upper side or the vertical side is connected to the end portion and the corner portion which are cut by aligning the outer weather strip and the inner weather strip,
An insert member is embedded in the corner portion on the side connected to the end portion cut by aligning the vehicle exterior weather strip and the vehicle interior weather strip, and the insert member is embedded in the vehicle exterior mounting base. The vehicle interior embedded base is composed of a vehicle interior embedded portion and a vehicle interior embedded portion that connects the vehicle interior embedded portion and the vehicle exterior embedded portion. The vehicle exterior embedded portion is located near the connection end surface in the vehicle exterior mounting base. And is formed long to be embedded from the vicinity of the connection end surface to the corner of the corner,
The vehicle interior embedded portion and the connection portion embedded portion are embedded in at least a part of each of the weather strip connection portion and the vehicle interior mounting base, and the vehicle interior embedded portion is formed shorter than the vehicle exterior embedded portion. It is embedded in a part of the corner of the inner mounting base at the center of the bend, and the connecting part embedded part is further shortened so as to connect a part of the corner of the car outer side embedded part and the corner of the inner side of the car to be bent. The door weather strip is recessed between the vehicle interior buried portion and the vehicle interior buried portion.

In the present invention of claim 1, the door weather strip includes an upper side portion formed by extrusion molding and attached to the upper side of the door frame, a vertical side portion attached to the vertical side of the door frame, an upper side portion and a vertical side portion. It consists of connecting corners that are connected by molding. For this reason, the upper side portion and the vertical side portion can be efficiently manufactured by extrusion molding, and the corner portion is formed by molding to form a door weather strip along the shape of the corner portion of the door and sealed. In addition, the upper side and the vertical side can be connected to seal the outer periphery of the door over the entire periphery.

The upper side, the vertical side, and the corner are each attached to the vehicle exterior part of the frame, and are attached to the vehicle exterior weather strip that seals between the vehicle exterior of the periphery of the vehicle body opening and the vehicle interior part of the door frame. The vehicle interior weather strip that seals between the periphery of the vehicle body opening portion and the vehicle interior weather strip, and the weather strip connection portion that integrally connects the vehicle exterior weather strip and the vehicle interior weather strip. For this reason, a double seal between the vehicle exterior weather strip and the vehicle interior weather strip can be achieved. Further, since both are connected by the weather strip connecting portion, if the vehicle inner weather strip and the vehicle outer weather strip are mounted at the respective mounting bases, they can be securely mounted together.
Moreover, the height of the vehicle exterior weather strip can be reduced, and the gap between the vehicle body opening periphery and the vehicle exterior side end of the door molding can be formed narrow. Therefore, it is possible to improve the aesthetics and reliably seal between the door frame and the periphery of the vehicle body opening.

The exterior weather strip is formed by an exterior exterior base that is attached to a door frame or door molding and an exterior seal portion that abuts against the periphery of the vehicle body opening when the door is closed. For this reason, the vehicle-side weather strip can be securely fixed to the door frame or the door molding, the vehicle-side seal portion can be brought into contact with the periphery of the vehicle body opening, and the vehicle-side end of the vehicle-body opening can be reliably sealed. .

Since the vehicle outer side mounting bases made of solid material are formed on the vehicle outer side mounting bases of the upper side and the vertical side, the vehicle outer side mounting base cores are extended to near the corners of the corners. can increase the stiffness of the outer mounting base and mounting the exterior side mounting base to the door frame, mounted firmly, to deviate from the door frame rather name at the corner portion, the vehicle exterior side mounting base is disengaged from the door frame Can be difficult.

The door weather strip on either the upper side portion or the vertical side portion connects the cut end portion and the corner portion while leaving the outer weather strip longer than the inner weather strip. For this reason, the vehicle outer side attachment base core part formed on the vehicle outer side attachment base of the vehicle outer side weather strip can be extended to the vicinity of the bending center part of the corner part. It can be made difficult to come off.

The other door weather strip of the upper side portion or the vertical side portion connects an end portion and a corner portion that are cut by aligning the outer weather strip and the inner weather strip. Therefore, it is easy to cut the end portion of the door weather strip, it is easy to hold the end portion with a mold, the structure of the mold for molding is simplified, the manufacturing is easy, and the productivity is good. .

An insert member is embedded in the corner portion on the side connected to the end portion that is cut by aligning the outer weather strip and the inner weather strip. For this reason, the rigidity of a corner part becomes high and it becomes difficult to remove | deviate from a door frame, after attaching to a door frame.
Since the embedded portion of the insert member is extended to the vicinity of the connection end surface in the vehicle outer mounting base, the rigidity of the vehicle outer mounting base can be increased to the vicinity of the connection end surface.
Further, in the corner portion, the connection on one side connects the end portion and the corner portion that are cut leaving the outer weather strip longer than the inner weather strip, and the connection on the other side embeds the insert member. Therefore, compared with the case where the insert members are embedded on both sides, the mold structure is simplified, and the molding material can easily flow through the mold, resulting in high productivity.

The insert member is composed of a vehicle outer embedded portion embedded in the vehicle outer mounting base, a vehicle inner embedded portion embedded in the vehicle inner mounting base, and a connecting portion embedded portion that connects the vehicle inner embedded portion and the vehicle outer embedded portion. Is done. For this reason, the insert member is held by the vehicle inner side mounting base and the vehicle outer side mounting base, the insert member is stabilized, and the door weather strip can be reliably held even if there is a channel break in the corner portion. Moreover, the insert member is formed integrally as a whole, has high rigidity, and high retention.

The vehicle interior embedded portion extends through the vehicle exterior mounting base to the vicinity of the connection end surface, and the vehicle interior embedded portion and the connection portion embedded portion are provided on at least a part of each of the weather strip connection portion and the vehicle interior mounting base. Buried. For this reason, the rigidity of the vehicle outer side mounting base is increased, and the vehicle outer side mounting base can be securely held up to the vicinity of the connection end surface, and the vehicle inner side mounting base can be securely mounted on the door frame.

According to the first aspect of the present invention, the vehicle interior buried portion of the insert member is formed long so as to be buried from the vicinity of the connecting end surface to the vicinity of the bending center of the corner portion. For this reason, the vehicle exterior attachment base can be reliably attached to the door frame from the vicinity of the connection end surface to the vicinity of the corner of the corner.

The vehicle interior burying portion is formed shorter than the vehicle exterior embedment portion, and is embedded in a part of the corner of the corner of the vehicle interior mounting base, and the connection portion burying portion is formed between the vehicle exterior burying portion and the vehicle interior burying portion. The corner portion is further shortened so as to connect a part of the bending center side, and the space between the vehicle outer side embedded portion and the vehicle inner side embedded portion is recessed. For this reason, while being able to hold | maintain a vehicle interior embedment part and a vehicle interior embedment part integrally, the area of an insert member is minimized and the flow of material when molding a corner part is improved, and manufacture is easy. This can increase productivity.

According to a second aspect of the present invention, the insert member is a door weather strip having a plurality of protrusions and through holes formed on a surface thereof.

According to the second aspect of the present invention, since the insert member has a plurality of protrusions formed on the surface, the insert member can be positioned at the center portion of the cavity of the mold when molding, so that the center portion of the vehicle outer mounting base portion can be located. Can be embedded in.
Since the through hole is formed in the insert member, the sponge material located on both surfaces of the insert member can be firmly fixed to the insert member.

According to a third aspect of the present invention, the vehicle exterior seal portion is a door weather strip formed in a lip shape.

In the present invention of claim 3 , since the vehicle exterior seal portion is formed in a lip shape, the lip vehicle exterior seal portion can reliably block the door frame and the periphery of the vehicle body opening, and the door closing force Can be reduced.

According to a fourth aspect of the present invention, the insert member is a door weather strip formed of a hard synthetic resin.

In the present invention of claim 4 , since the insert member is formed of a hard synthetic resin, it can contribute to weight reduction of the vehicle and can have a complicated shape in accordance with the shape of the corner portion.

According to the fifth aspect of the present invention, the outer side weather strip of the upper side portion and the vertical side portion is formed of a solid material in the outer side mounting base portion and the connecting portion, and the outer side mounting base portion other than the outer side mounting base portion. The vehicle inner mounting base, the vehicle outer sealing portion, and the vehicle inner sealing portion other than the vehicle inner mounting base core are door weather strips formed of a sponge material.

In the present invention of claim 5, the outer side weather strip of the upper side portion and the vertical side portion is formed of a solid material at the outer side mounting base core portion and the connecting portion. For this reason, the vehicle outer side mounting base portions of the upper side portion and the vertical side portion are securely held by the retainer portion, respectively, and when the door weather strip is attached, it is possible to prevent the entire length from extending.

The vehicle outside attachment base other than the vehicle outside attachment base core, the vehicle inside attachment base other than the vehicle inside attachment base core, the vehicle outside seal portion, and the vehicle inside seal portion were formed of a sponge material. For this reason, even if an unevenness | corrugation arises in a retainer part or an other party member, it can deform | transform flexibly, can contact | adhere to a retainer part or an other party member, and can improve sealing performance. Further, if a hard material is formed of hard rubber at the upper side and the vertical side, hard rubber and a sponge material can be extruded simultaneously, and manufacturing is easy.

The door weather strip on either the upper side portion or the vertical side portion is connected to the cut end portion and the corner portion while leaving the outer weather strip longer than the inner weather strip. The vehicle outer side mounting base portion can be extended to the vicinity of the corner of the corner portion, making it difficult for the vehicle outer side mounting base portion to come off the door frame.
The corner part on the side connected to the cut end of the outer weather strip and the inner weather strip has an insert member extending to the vicinity of the connection end surface of the outer mounting base. Can be increased to the vicinity of the connection end face.
Since the portion of the insert member embedded in the weather strip connecting portion and the vehicle inner side mounting base portion is embedded in at least a part of each of the weather strip connecting portion and the vehicle inner side mounting base portion, the insert member is stabilized.
Exterior embedded portion of the insert member from the vicinity of the connection end face because it is formed long so as to be embedded to the vicinity of the center curved corners, exterior mounting base is securely from the vicinity of the connecting end face to the vicinity of the center bend of the corner portion Can be mounted on the door frame.
The vehicle interior burying portion is formed shorter than the vehicle exterior embedment portion, and is embedded in a part of the corner of the corner of the vehicle interior mounting base, and the connection portion burying portion is formed between the vehicle exterior burying portion and the vehicle interior burying portion. It is formed to be shorter so as to connect a part of the corner center side of the corner, and since the recessed part between the vehicle outer side embedded part and the vehicle inner side embedded part is held, the vehicle outer side embedded part and the vehicle inner side embedded part are integrally held. In addition, the area of the insert member can be minimized, the material flow can be improved when the corner portion is formed, the manufacture is easy, and the productivity can be increased.

An embodiment of the present invention will be described with reference to FIGS.
FIG. 8 is a side view of the automobile. As shown in FIG. 8, on both the front side and the rear side, a door frame 2 is provided on the outer periphery of the upper part of the door 1 of the automobile, and a door glass 5 is attached so as to be movable up and down. That is, a door weather strip 10 is attached to the outer periphery of the door frame 2 to seal between the door 1 and the periphery 6 of the vehicle body opening.

FIGS. 1-7 is a figure regarding the door weather strip 10 of embodiment of this invention, FIG. 7 is the front view of the whole door weather strip 10 of this invention.
FIG. 1 is a cross-sectional view taken along line AA in FIG. 4, and FIG. 2 is a cross-sectional view of a corner portion 12 of the door weather strip 10 taken along line BB in FIG. 3 and 4 are a C arrow view and a D arrow view of the corner portion 12 of the door weather strip 10, respectively.
5 and 6 are respectively a front view and a plan view of the insert member 50 embedded in the corner portion 12 of the door weather strip 10 according to the embodiment of the present invention.

As shown in FIG. 7, the door weather strip 10 has a linear portion 11 composed of an upper side portion 13 and a vertical side portion 14 corresponding to the upper side and the vertical side of the door frame 2 and is formed into a long shape by extrusion molding. The portion of the corner portion 12 corresponding to the corner portion of the door frame 2 is formed by molding by connecting the upper side portion 13 and the vertical side portion 14. First, the mounting structure of the straight portion 11 of the door weather strip 10 will be described with reference to FIG. 1 taking the upper side portion 13 as an example, and then the mounting structure of the corner portion 12 will be described based on FIGS.

As shown in FIG. 1, the straight portion 11 of the door weather strip 10 according to the embodiment of the present invention is attached to the door frame 2 and the door molding 60.
In the present invention, the door frame 2 to which the door weather strip 10 is attached is of a so-called hidden type. As shown in FIG. 1, the hidden door frame 2 has a narrow width at the front end of the vehicle, is covered with a door molding 60 attached to the outer periphery of the door frame 2, and cannot be seen from the outside of the vehicle. Yes. In the present embodiment, the door molding 60 is formed continuously from the molding portion 61 and the retainer portion 62. The molding part 61 and the retainer part 62 may be formed separately.
The door molding 60 is fixed to the door frame 2 with rivets, clips, screws, or the like.

The molding part 61 has a predetermined width so as to cover the front end of the door frame 2, and the lower end is bent into a hairpin shape. A glass run (not shown) is sandwiched and held between the portion bent into the hair pin shape and the inner surface of the door frame 2. For this reason, the front end of the door frame 2 can be covered with the molding portion 61 so as to be invisible from the outside of the vehicle, and since the molding portion 61 holds the glass run, the side wall of the door frame 2 can be deleted. Weight can be reduced.
Similarly, the upper end of the molding part 61 is bent in the form of a hairpin on the back side and continues to the retainer part 62. The molding part 61 and the retainer part 62 can be formed by bending a sheet metal such as stainless steel.

The retainer portion 62 is formed in a wide U-shape in which the cross-sectional shape is widened at the bottom. A front end portion of the retainer portion 62 on the vehicle inner side is formed by bending in a hairpin shape, and a concave portion is formed on the vehicle outer side end portion of the retainer portion 62. For this reason, the vehicle outer side attachment base 21 of the vehicle outer side weather strip 20 described later can be held in the concave portion of the retainer portion 62.
The vehicle outer side portion of the retainer portion 62 is formed continuously with the upper end of the molding portion 61 on the back side of the molding portion 61.

The inner periphery of the vehicle interior of the door frame 2 is formed in a step-like lower position on the vehicle inner side than the vehicle outer side to which the retainer portion 62 is mounted, so that the vehicle inner mounting base 31 of the vehicle inner weather strip 30 described later can be mounted. A groove-like door frame retainer portion 2c is formed. The door frame retainer portion 2 c is formed by bending the inner panel 2 b of the door frame 2. For this reason, the vehicle interior weather strip 30 can be attached to a lower position than the vehicle exterior weather strip 20.

As shown in FIG. 1, the door weather strip 10 includes an outer weather strip 20, an inner weather strip 30, and a weather that integrally connects the outer weather strip 20 and the inner weather strip 30. The strip connecting portion 40 is configured.
The outside weather strip 20 is attached to the outside of the outer periphery of the door frame 2, that is, to the retainer portion 62 described above, and seals the front end portion of the outside of the vehicle between the door frame 2 and the vehicle body opening peripheral edge 6.

The inside weather strip 30 is attached to the inside of the outer periphery of the door frame 2, that is, to the door frame retainer portion 2 c described above, and seals the inside of the vehicle between the door frame 2 and the vehicle body opening peripheral edge 6. The vehicle interior weatherstrip 30 includes a vehicle interior attachment base 31 that is attached to the door frame retainer portion 2c, and a vehicle interior seal portion 32 that contacts and seals the vehicle interior portion of the vehicle body opening periphery 6. For this reason, double sealing can be performed by the above-described outside weather strip 20 and the inside weather strip 30.

The vehicle inner side mounting base 31 is formed in a substantially plate shape, and both side ends thereof are fitted into the door frame retainer portion 2 c of the door frame 2 to hold the vehicle inner weather strip 30. The vehicle inner side attachment base core part 35 in the center part of the vehicle inner side attachment base 31 is formed of a hard material. For this reason, the door weather strip 10 can be prevented from meandering and being conveyed due to the shrinkage balance of the molding material of the outer weather strip 20 and the inner weather strip 30 during extrusion molding and vulcanization. The door frame retainer 2c is securely held. Further, when the door weather strip 10 is attached to the door frame 2, the door weather strip 10 can be prevented from extending in the longitudinal direction.
A double-sided adhesive tape may be attached to the back surface of the vehicle interior attachment base 31 and adhered to the door frame 2. In this case, it is not necessary to form the door frame retainer portion 2c of the door frame 2, and the door frame 2 can be easily manufactured.

The vehicle interior seal portion 32 is formed in a hollow shape, and abuts against a bulge portion on the vehicle interior side of the vehicle body opening periphery 6 when the door is closed, so that the space between the vehicle body opening periphery 6 and the door frame 2 can be sealed. .
The vehicle interior seal portion 32 can also be formed in a lip shape.
Further, the door frame retainer portion 2c of the door frame 2 is formed below the portion of the door molding 60 where the retainer portion 62 is attached. A gap between the peripheral edge 6 and the door frame 2 can be reduced.

As shown in FIG. 1, the vehicle exterior weather strip 20 is formed of a vehicle exterior mounting base portion 21 and a vehicle exterior seal portion 22. The bottom surface of the vehicle inner side and the vehicle outer side end of the vehicle outer side mounting base portion 21 abuts on the retainer portion 62, and the vehicle outer side side end is fitted into the recessed portion of the retainer portion 62 as described above.

The vehicle exterior seal portion 22 forms a lip-shaped seal portion. A lip-shaped vehicle exterior seal portion 22 is extended from the vehicle exterior mounting base portion 21 of the vehicle exterior weather strip 20 toward the vehicle exterior opening peripheral edge 6 toward the front end portion of the vehicle exterior.
When the door is closed, the vehicle outer side seal portion 22 can close the gap between the vehicle body opening peripheral edge 6 and the front end of the door molding 60. Since the vehicle outer side seal part 22 is a lip shape, it is easy to bend and can reduce door closing force.

In addition, the base part or center part of the vehicle outer side mounting base 21 and the vehicle inner side mounting base 31 is formed of the hard material as the vehicle outer side mounting base core portion 25 and the vehicle inner side mounting base core portion 35 are formed as described above. can do. When formed of a hard material, it is possible to prevent the door weather strip 10 from being stretched when attached to the door frame 2, and to be firmly held by the retainer portion 62, and to bring the vehicle exterior seal portion 22 into contact with a predetermined position. Can be secured.

As the hard material, the vehicle outer side mounting base core part 25 of the vehicle outer side mounting base part 21 can use the same material as the vehicle inner side mounting base part core part 35 of the vehicle inner side mounting base part 31, for example, JIS hardness 85 °. It can be formed from a hard rubber of ~ 95 °. If hard rubber is used, it can be molded simultaneously with other parts using soft rubber.
When the hard material portion is formed of a solid material of EPDM rubber or olefin-based thermoplastic elastomer, a product having good weather resistance can be obtained.

The surfaces of the vehicle exterior mounting base 21 and the vehicle interior mounting base 31 can be covered with a sponge member. In this case, even if the surfaces of the retainer portion 62 and the door frame retainer portion 2c are uneven due to attachment holes or the like, the surface layer portions of the vehicle outer attachment base 21 and the vehicle inner attachment base 31 are formed on the retainer portion 62 according to the unevenness. It can adhere | attach and can improve a sealing performance. As this sponge material, an EPDM rubber or an olefin-based thermoplastic elastomer foamed can be used.

In the door weather strip 10, portions other than those formed of a hard material, that is, the vehicle outer side seal portion 22, the vehicle inner side seal portion 32 of the vehicle inner side weather strip 30 described later, the both sides of the vehicle inner side mounting base portion 31, and the wafer The strip connecting portion 40 is formed of a sponge material of EPDM rubber or olefin-based thermoplastic elastomer. When the hard material is formed of EPDM or an olefinic thermoplastic elastomer, the door weather strip 10 is entirely olefinic and can be used after being crushed together and recycled.

Next, the corner portion 12 of the door weather strip 10 will be described using the corner portion 12 on the front side of the front door as an example.
As shown in FIG. 7, the corner portion 12 of the door weather strip 10 is formed by molding, and connects the upper side portion 13 and the vertical side portion 14. Similarly to the upper side portion 13 and the vertical side portion 14, the corner portion 12 includes an outer weather strip 20 and an inner weather strip 30.
The vehicle exterior weather strip 20 is formed of a vehicle exterior mounting base portion 21 and a vehicle exterior seal portion 22. An insert member 50 is embedded in the vehicle outer side mounting base portion 21 on the vertical side portion 14 side.

As shown in FIG. 4, the connection between the upper side portion 13 and the corner portion 12 forms an extension portion 26 while leaving the portion of the outer weather strip 20 of the upper side portion 13 longer than the portion of the inner weather strip 30. Then, the upper side portion 13 including the extension portion 26 is sandwiched by a mold for molding the corner portion 12 to connect the corner portion 12.
However, the insert member 50 may be embedded in the upper side portion 13 and the extension portion 26 of the vehicle outer side attachment base portion 21 of the vehicle outer side weather strip 20 may be formed on the vertical side portion 14 side.

When the corner portion 12 connected in this way is attached to the door frame 2, it is attached to the vehicle outer side attachment base portion 21 of the vehicle outer side weather strip 20 at the portion connected to the upper side 13 side of the corner portion 12 of the vehicle outer side weather strip 20. The formed vehicle outer side attachment base core part 21b can be extended to 12 parts of the corner part. For this reason, on the upper side 13 side of the corner portion 12, even if there is no insert member 50, the rigidity of the vehicle outer side mounting base portion 21 can be increased and strongly held by the door molding 60 or the retainer portion 62 of the door frame 2, It can be made difficult to come off the door frame 2.

On the side connected to the vertical side portion 14 of the corner portion 12 of the door weather strip 10, similarly to the vertical side portion 14, an exterior weather strip 20 and an interior weather strip 30 are provided. On the side of the corner portion 12 connected to the vertical side portion 14, an insert member 50 formed integrally with the outside weather strip 20, the weather strip coupling portion 40 and the inside weather strip 30 is embedded. The front end of the vertical side portion 14 is cut by aligning the outer weather strip 20 and the inner weather strip 30 and cutting the corner portion 12.

The insert member 50 is injection-molded with a synthetic resin in advance. As shown in FIG. 2, the insert member 50 is embedded in the vehicle exterior embedded portion 51 embedded in the vehicle exterior mounting base 21 of the vehicle exterior weather strip 20 and the vehicle interior mounting base 31 of the vehicle interior weather strip 30. The vehicle interior buried portion 52 and the connecting portion buried portion 53 buried in the weather strip connecting portion 40 are formed.

As shown in FIG. 3, the vehicle exterior embedded portion 51 is embedded from the vicinity of the connection end surface of the vehicle exterior mounting base 21 on the side connected to the vertical side portion 14 of the corner portion 12 to the vicinity of the bending center of the corner portion 12. The vehicle interior burying portion 52 is formed to be shorter than the vehicle exterior embedment portion 51 and is embedded in a part of the corner portion 12 of the vehicle interior mounting base 31 on the bending center side. The outer mounting base portion 21 and the vehicle inner mounting base portion 31 are further shortened so as to be connected.

For this reason, on the vertical side portion 14 side of the corner portion 12, the vehicle-side embedded portion 51 of the insert member 50 can be embedded over substantially the entire length of the vehicle-side mounting base portion 21 on the vertical side portion 14 side. When the vehicle exterior mounting base 21 is mounted on the retainer portion 62 of the door molding 60, even if the vehicle exterior mounting base 21 is formed of a sponge material, the insert member 50 has high rigidity and can be reliably held and detached. Absent.

In the corner portion 12, as shown in FIG. 2, the vehicle interior weather strip 30 is formed of a vehicle interior mounting base portion 31 and a vehicle interior seal portion 32. The vehicle interior attachment base 31 is attached to the door frame retainer portion 2c, and a core take-out hole 33 for taking out the core at the time of molding is formed at the center. The vehicle interior seal portion 32 contacts and seals the vehicle body opening periphery 6 when the door is closed, and the portion of the vehicle exterior weather strip 20 close to the vehicle interior mounting base 31 contacts the back surface of the outer panel 2a of the door frame 2. The vehicle interior seal portion 32 and the vehicle exterior weather strip 20 are held in contact with each other.

2 and 3, the vehicle interior buried portion 52 is embedded in a part of the vehicle interior mounting base 31 of the vehicle interior weather strip 30, and the connecting portion embedded portion 53 is connected to the vehicle exterior embedded portion 51 and the vehicle interior side. Since the embedded portion 52 is integrally connected, the vehicle interior mounting base 31 and the vehicle exterior mounting base 21 are integrally held when the vehicle interior mounting base 31 of the corner portion 12 is held by the door frame retainer portion 2c. The door weather strip 10 can be strongly held as a whole.

Since the vehicle interior burying portion 51 is long, the vehicle interior burying portion 52 is short, and the connecting portion burying portion 53 is formed in a recessed shape, when the corner portion 12 is molded, the sponge material of the molding material flows through the mold. Easy to form.
A plurality of protrusions 54 are formed on both sides of the surface of the insert member 50, and a plurality of through holes 55 penetrating the insert member 50 are formed. For this reason, when molding, the insert member 50 can be positioned at the center portion of the cavity of the mold by the protrusion 54, and the insert member 50 can be embedded in the center portion of the vehicle exterior mounting base portion 21. .

Since the through hole 55 is formed in the insert member 50, the sponge material wraps around the through hole 55, and the sponge material positioned on both surfaces of the insert member 50 can be firmly fixed to the insert member 50.
As shown in FIG. 2, the vehicle outer side mounting base portion 21 in which the insert member 50 is embedded is held by the door molding 60 of the door frame 2, and the vehicle outer side seal portion 22 is mounted on the vehicle body opening peripheral edge 6. It can abut against the garnish 8 and seal between the door frame 2 and the vehicle body opening periphery 6.

It is sectional drawing along the AA in FIG. 4 of the part near the upper side part of the corner part of the door weather strip which is embodiment of this invention. It is sectional drawing along the BB line in FIG. 3 of the part near the vertical side part of the corner part of the door weather strip which is embodiment of this invention. It is a reverse view of the corner part of the door weather strip which is embodiment of this invention. It is a top view of the corner part of the door weather strip which is embodiment of this invention. It is a front view of the insert member embed | buried under the door weather strip which is embodiment of this invention. It is a top view of the insert member embed | buried under the door weather strip which is embodiment of this invention. It is a top view of the whole door weather strip which is embodiment of this invention. It is a side view of a motor vehicle door. It is sectional drawing of the upper side part of the conventional door weather strip. It is sectional drawing of the upper side part of the conventional door weather strip. It is a perspective view of the corner part of the other conventional door weather strip. It is sectional drawing of the corner part of the other conventional door weather strip.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door 2 Door frame 6 Car body opening periphery 10 Door weather strip 20 Car exterior weather strip 21 Car exterior mounting base 22 Car exterior seal part 26 Extension part 30 Car interior weather strip 40 Connecting part 50 Insert member 51 Car interior Part 52 Car interior buried part

Claims (5)

In a door weather strip that attaches a door weather strip that seals between the door of the automobile and the periphery of the vehicle body opening to the outer periphery of the door frame of the door,
The door weather strip is formed by extrusion molding and is attached to the upper side of the door frame, the vertical side part to be attached to the vertical side of the door frame, and the corner for connecting the upper side and the vertical side by molding. Consists of parts
The upper side portion, the vertical side portion, and the corner portion are attached to the vehicle outer side portion of the door frame, respectively, and the vehicle outer weather strip that seals between the vehicle outer side of the periphery of the vehicle body opening and the vehicle of the door frame. A vehicle interior weather strip that is attached to the interior portion and seals between the vehicle interior periphery of the vehicle body opening, and a weather strip connection portion that integrally connects the vehicle exterior weather strip and vehicle interior weather strip. Consisting of
The outside weather strip is formed from an outside mounting base that is attached to the door frame or door molding and an outside sealing portion that comes into contact with the periphery of the vehicle body opening when the door is closed,
A vehicle outer side mounting base core portion made of a solid material is formed on the vehicle outer side mounting base portions of the upper side portion and the vertical side portion, and the vehicle outer side mounting base core portion is extended to near the bending center portion of the corner portion. ,
The corner part is entirely formed of sponge material,
The door weather strip of either the upper side portion or the vertical side portion connects the end portion and the corner portion that are cut leaving the outer weather strip longer than the inner weather strip,
The other door weather strip of the upper side portion or the vertical side portion is connected to the end portion and the corner portion which are cut by aligning the outer weather strip and the inner weather strip,
An insert member is embedded in the corner portion on the side connected to the cut end portion of the vehicle exterior weather strip and the vehicle interior weather strip, and the insert member is embedded in the vehicle exterior mounting base. A vehicle interior burying portion embedded in the vehicle interior mounting base, and a connecting portion burying portion that connects the vehicle interior embedment portion and the vehicle exterior embedment portion. In the mounting base is extended to the vicinity of the connection end face, and is formed so as to be embedded from the vicinity of the connection end face to the vicinity of the bending center of the corner part,
The vehicle interior embedded portion and the connection portion embedded portion are embedded in at least a part of each of the weather strip connection portion and the vehicle interior mounting base, and the vehicle interior embedded portion is formed shorter than the vehicle exterior embedded portion. Embedded in a portion of the corner portion of the corner portion of the vehicle interior mounting base, and the connecting portion buried portion connects a portion of the corner portion of the corner portion of the vehicle outer portion embedded portion and the corner portion of the vehicle inner portion embedded portion. The door weather strip is further shortened so as to be recessed between the vehicle interior buried portion and the vehicle interior buried portion.   2. The door weather strip according to claim 1, wherein the insert member has a plurality of protrusions and through holes formed on a surface thereof.   The door weather strip according to claim 1 or 2, wherein the vehicle exterior seal portion is formed in a lip shape.   The door weather strip according to any one of claims 1 to 3, wherein the insert member is formed of a hard synthetic resin.   The outer side weather strip of the upper side part and the vertical side part is formed of a solid material at the outer side mounting base part and the connecting part, and the outer side mounting base part and the inner side mounting part other than the outer side mounting base part core part. The door weather strip according to any one of claims 1 to 4, wherein the vehicle inner mounting base, the vehicle outer seal portion, and the vehicle inner seal portion other than the base core portion are formed of a sponge material.

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