JP5195391B2 - Weather strip and its mounting structure - Google Patents

Description

  The present invention relates to a weather strip attached along the periphery of a door opening of a vehicle and an attachment structure thereof.

  Generally, a weather strip (opening trim) is provided at the periphery of a door opening formed in an automobile body such as an automobile. The weather strip is attached to a flange portion provided along the periphery of the door opening, and has a substantially U-shaped cross section including a vehicle inner side wall portion, a vehicle outer side wall portion, and a connecting portion that connects both side wall portions. And a seal portion that protrudes outward from the vehicle outer side wall portion. When the door is closed, the seal portion is pressed against the peripheral edge of the door, so that the space between the automobile body and the door is sealed. The weather strip also includes a design lip extending from the boundary between the vehicle interior side wall and the connecting portion to the vehicle interior. The end of the interior member is covered with the design lip, thereby improving the design. Further, the weather strip is generally formed in a substantially straight shape by extrusion molding over the entire longitudinal direction or most of the weather strip.

  By the way, when the extruded portion of the weather strip is bent (curved) and attached in correspondence with the corner portion of the door opening, the design lip receives the stress accompanying the bending and is directed away from the interior member. May be deformed. In particular, when the design lip and the interior member are separated from each other, there is a risk of causing problems such as a decrease in design properties and a decrease in sealability.

On the other hand, the base part side of the design lip is a thick part, the tip part side is a thin part, and the boundary part between the thick part and the thin part is positioned on the vehicle inner side than the tip part of the thin part. There is a technology (for example, see Patent Document 1).
Japanese Utility Model Publication No. 5-26661

  When the configuration of Patent Document 1 is adopted, when the weather strip is bent as described above, the tip end side (thin wall portion) of the design lip is deformed toward the vehicle exterior rather than the vehicle interior. For this reason, when the design lip and the interior member come into contact with each other in the direction intersecting the mounting direction of the trim portion to the flange portion, the design lip and the interior member are separated from each other at the corner portion of the door opening. It is possible to suppress such a problem as to end up.

  However, when the design lip and the interior member abut in the mounting direction of the trim portion to the flange portion, as described in Patent Document 1, even if the design lip is bent, the design lip and the interior member There is a concern that the effect of preventing the separation of the lip is not performed well (the tip end side of the design lip is inclined and deformed toward the outside of the vehicle, so that the separation becomes easier).

  In addition, it is conceivable that the bent portion of the weather strip attached to the corner portion of the door opening is configured in advance into a bent shape corresponding to the corner portion by molding, in this case, There is a possibility that a step is formed at a boundary portion with the mold forming portion or a difference in color luster occurs, resulting in a decrease in designability. Furthermore, the man-hours required for production may increase.

  The present invention has been made to solve the above-mentioned problems, and its purpose is to prevent a situation in which the design lip and the interior member are separated from each other, thereby preventing a deterioration in design properties. It is to provide a strip and its mounting structure.

  In the following, each means suitable for solving the above-mentioned purpose will be described in terms of items. In addition, the effect etc. peculiar to a corresponding means are added as needed.

Means 1. A trim portion having a substantially U-shaped cross section, which is attached to a flange portion provided along the periphery of the door opening of the vehicle body and includes a vehicle outer side wall portion, a vehicle inner side wall portion, and a connecting portion that connects both side wall portions. When,
A seal portion that protrudes from the vehicle outer side wall portion to the vehicle outer side and is pressed against the peripheral edge of the door when the door that opens and closes the door opening is closed;
A design lip extending from the vicinity of the boundary between the vehicle interior side wall and the connecting portion to the vehicle interior, and covering the edge of the interior member from the inner peripheral side of the door opening,
At least a part is formed by extrusion molding in the longitudinal direction, and the extrusion molding portion is bent and attached corresponding to the corner portion of the door opening,
The trim part is a weather strip in which a metal insert is embedded along its longitudinal direction,
As for the bent portion where the curvature is maximized in at least the mounting state of the trim portion to the flange portion, the vehicle outer side wall portion in the state before the trim portion is attached to the flange portion, compared to other general portions, An angle formed with the connecting portion is configured to be small ,
The root portion of the design lip in the bent portion is located on the attachment direction side to the flange portion of the trim portion than the root portion of the design lip in the general portion,
The weather strip, wherein the design lip at the bent portion is inclined more toward the mounting direction side of the trim portion to the flange portion than the design lip at the general portion .

  According to the means 1, the angle formed by the vehicle outer side wall portion and the connecting portion is smaller in the bent portion than in the general portion. As a result, the base portion of the design lip at the bent portion can be brought closer to the base portion side of the flange portion, and thus toward the interior member side, and the design lip at the bent portion can be inclined toward the interior member side. For this reason, even when the bent portion is bent (curved) corresponding to the corner portion, the design lip is prevented from being separated from the interior member even if the trim portion is deformed so as to open. be able to. Accordingly, it is possible to prevent a situation in which the design property is lowered, the sealing property is lowered, and the like due to the design lip being separated from the interior member.

  Moreover, according to this means, the extrusion molding part is bent and attached corresponding to the corner part of the opening part for doors. For this reason, as in the case where the bent part is constituted by a mold part, the connecting line between the extrusion part and the mold part appears in the appearance at the corner part of the door opening, or there is a difference in color and gloss. In other words, it is possible to avoid a situation in which the appearance quality is deteriorated. Furthermore, since the process for forming the molded part can be reduced, the number of man-hours required for the production can be reduced, and the production efficiency can be improved. In addition, when the longitudinal direction whole area | region of a weather strip is formed by extrusion molding, the said effect is more remarkable.

  Furthermore, according to this means, the angle formed between the vehicle outer side wall portion and the connecting portion is not reduced in the entire longitudinal direction, but the angle at the bent portion is configured to be small. For this reason, the design lip and the interior member are too pressed against each other due to the fact that the angle is configured to be small even in the general part, resulting in the design lip being deformed into an irregular shape and a decrease in design properties. Can be avoided. In addition, since the insert is embedded in the trim portion, the angle formed between the vehicle outer side wall portion and the connecting portion can be changed relatively easily and reliably at the bent portion.

Mean 2. In the boundary portion with the general portion at both ends of the bent portion, a gradually changing portion where the angle formed by the vehicle outer side wall portion and the connecting portion gradually changes is provided,
The weather strip according to means 1, wherein the length of the gradually changing portion is 15 mm or more and 100 mm or less.

  According to the means 2, the cross-sectional shape of the weather strip changes abruptly at the boundary between the bent portion and the general portion due to the presence of the gradually changing portion (an extreme step is formed in the connecting portion and the design lip). Can be prevented. Accordingly, it is possible to prevent a decrease in designability. In addition, it is possible to suppress a situation in which the sealing performance is deteriorated or the mounting state becomes unstable due to a sudden change in the cross-sectional shape of the weather strip. In particular, in the present means 2, since the length of the gradually changing portion is set to 15 mm or more, the change in the cross-sectional shape of the weather strip at the gradually changing portion can be made gradual, and the above-described effects are ensured. To be played. In addition, when the length of a gradual change site | part is less than 15 mm, the change of a cross-sectional shape will be too rapid, and there exists a concern about the fall of the designability etc. Further, if the length of the gradually changing portion exceeds 100 mm, the bending jig may be enlarged (the entire length becomes large).

Means 3. A vehicle outer side holding lip extending from the vehicle outer side wall portion toward the inside of the trim portion;
A vehicle interior holding lip extending from the vehicle interior side wall portion toward the inside of the trim portion,
The trim portion is attached to the flange portion by the pressure contact of the vehicle outer side holding lip and the vehicle inner side holding lip to the flange portion,
The bending portion is centered on the boundary portion between the vehicle outer side wall portion and the connecting portion so that the inclination angle of the connecting portion of the bending portion is different from the inclination angle of the connecting portion of the general portion. The weather strip according to claim 1 or 2, wherein the cross-sectional shape is formed by inclining deformation of the connecting portion toward the inside of the trim portion.

  For example, when the vehicle outer side wall portion of the bent portion is deformed so that the inclination angle is different from the vehicle outer side wall portion of the general portion, the angle formed by the vehicle outer side wall portion and the connecting portion in the bent portion is configured to be small. The root position and inclination angle of the design lip changes, but only the outer side wall of the bent part has a convex shape on the inner side of the car. Therefore, when attached to the flange, the general part (boundary part with the bent part) There is a possibility that the vehicle outer side wall portion in the vicinity) will be separated from the flange outer surface of the vehicle, resulting in a decrease in sealing performance. If the weather strip is not torsionally deformed near the boundary between the bent portion and the general portion after the trim portion is attached to the flange portion, the design lip at the bent portion is brought close to the interior member and the design lip and the interior member are There exists a possibility that the effect of preventing separation may not be played well. However, it is difficult to accurately twist and deform the weatherstrip together with the insert by the elastic force of the holding lip so that the above-described effects can be obtained. Further, even if the weather strip is well twisted and deformed, the stress accompanying the deformation acts on the general part or the like this time, which may lead to problems such as an unstable mounting state.

  On the other hand, according to the present means 3, the angle formed between the vehicle outer side wall portion and the connecting portion at the bent portion is changed by deforming the connecting portion of the bent portion so that the inclination angle is different from that of the connecting portion of the general portion. Is configured to be small. For this reason, even if the weather strip is not twisted and deformed after the trim portion is attached to the flange portion, the design lip at the bent portion is brought closer to the interior member side and tilted toward the interior member side. Therefore, the operation and effect of the means 1 can be more reliably achieved while avoiding the above problems.

Means 4. The weather strip mounting structure according to any one of the above means 1 to 3,
Of the door opening, in the corner portion to which the bent portion is attached, the front end portion of the flange portion and the front end portion of the interior member in the mounting direction of the trim portion to the flange portion as compared with other portions. mounting structure of the weather strip, characterized in that bets are separated greatly.

  As for the corner part of the door opening, it is necessary to form the flange part and the interior member in accordance with the corner shape. Therefore, due to various manufacturing factors (for example, manufacturing error), the flange part of the trim part In the mounting direction, the front end of the flange portion and the front end of the interior member may be relatively far apart. In other words, at the corner portion of the door opening, not only the design lip and the interior member are easily separated due to the bending of the weather strip, but also the tip of the flange portion to which the weather strip is attached. The design lip and the interior member are easily separated from each other by the separation of the portion and the tip of the interior member.

  On the other hand, as described in the means 1, the tip portion of the design lip can be reliably brought into contact with the interior member by reducing the angle formed between the vehicle outer side wall portion and the connecting portion at the bent portion. . Therefore, it is possible to more reliably prevent the design lip from being lowered from the interior member, resulting in a decrease in design property, a decrease in sealing property, and the like.

  Hereinafter, an embodiment will be described with reference to the drawings. As shown in FIG. 1, an automobile door 1 is provided with an automobile door (a front door in the figure: hereinafter simply referred to as “door 2”) that can be opened and closed. In addition, the periphery of the door opening 4 of the automobile body 3 (vehicle main body) corresponding to the door 2 has a seal that seals between the periphery of the door opening 4 and the door 2 when the door 2 is closed. The strip 5 (opening trim) is provided.

  As shown in FIG. 2, the weather strip 5 of the present embodiment has a front vertical side corresponding to the front edge of the door opening 4 in the longitudinal direction, an upper side corresponding to the upper edge, And a rear vertical side portion corresponding to the rear edge portion. The weather strip 5 is attached to a flange portion 33 (see FIG. 3) formed along the inner periphery of the door opening 4. Further, the weather strip 5 is formed substantially linearly in the entire longitudinal direction by extrusion. Therefore, the weather strip 5 is bent and attached to the flange portion 33 at the front upper corner portion C1 and the rear upper corner portion C2 (see FIG. 1) of the door opening 4. In the present embodiment, the curvature of the rear upper corner portion C2 is configured to be larger than the curvature of the front upper corner portion C1.

  As shown in FIG. 3, the weather strip 5 includes a vehicle inner side wall portion 12, a vehicle outer side wall portion 13, and a connecting portion 14 that connects both side wall portions 12 and 13, and has a substantially U-shaped cross section. A trim portion 11 is provided, and a seal portion 15 is provided so as to protrude outward from the vehicle outer side wall portion 13 and has a hollow portion 15a therein. Further, a metal insert 17 is embedded in the trim portion 11 along the longitudinal direction thereof. The insert 17 according to the present embodiment has a bone piece portion 17a having a substantially U-shaped cross section embedded at predetermined intervals along the longitudinal direction of the trim portion 11, and a center that connects the substantially central portions of the bone piece portions 17a. This is a so-called center bond type insert having a bond portion (not shown).

  The flange portion 33 is formed by joining an inner panel 31 and an outer panel 32 that constitute the automobile body 3. Note that the flange portion 33 shown in FIG. 3 is provided with a plate-like lean force between the panels 31 and 32 in order to increase its strength. And the weather strip 5 is attached to the peripheral part of the door opening part 4 by relatively fitting the flange part 33 inside the trim part 11. Further, when the door 2 is closed, the seal portion 15 is pressed against the peripheral edge portion of the door 2 to be crushed and deformed, whereby the door 2 and the automobile body 3 are sealed.

  Further, the weather strip 5 has one vehicle inner side holding lip 21 extending from the vehicle inner side wall portion 12 toward the vehicle outer side and the connecting portion 14 side, and from the vehicle outer side wall portion 13 toward the vehicle inner side and the connecting portion 14 side. Three vehicle exterior holding lips 22 extending in the direction. The three exterior holding lips 22 are provided at a predetermined distance in the direction in which the trim portion 11 is attached to the flange portion 33. Further, the vehicle inner side holding lip 21 is configured to be thicker and longer than the vehicle outer side holding lip 22. Then, by relatively fitting the flange portion 33 inside the trim portion 11, the vehicle inner side holding lip 21 and all the vehicle side outer side holding lips 22 are pressed against the flange portion 33, and elastic force by the holding lips 21, 22 is obtained. The mounting state of the weather strip 5 is maintained based on the above. When the trim portion 11 (weather strip 5) is attached to the flange portion 33, the vehicle-side holding lip 21 pushes the vehicle-side holding lip 22 against the flange portion 33, and the vehicle-side side wall portion 13 is the flange portion. 33 (substantially parallel).

  The weather strip 5 extends from the boundary portion between the connecting portion 14 and the vehicle interior side wall portion 12 toward the vehicle interior side, and the edge of the interior member 35 (pillar garnish or the like) is disposed on the inner peripheral side of the door opening 4. The design lip 26 which covers from is provided. In this embodiment, the trim part 11, the holding lips 21, 22 and the design lip 26 are made of solid EPDM (ethylene-propylene-diene copolymer rubber), and the seal part 15 is made of sponge EPDM. In addition, a sheet-like covering portion 27 made of TPO (olefinic thermoplastic elastomer) is attached to the outer surfaces of the design lip 26 and the connecting portion 14.

In addition, the site | part by the side of the front-end | tip part of the interior member 35 of this embodiment is extended in the direction substantially orthogonal to the attachment direction to the flange part 33 of the trim part 11, and the design lip 26 and the interior member 35 are trimmed. The portion 11 is in contact with the flange portion 33 in the mounting direction. In the present embodiment, in the rear upper corner portion C2 of the door opening 4, the front end portion of the flange portion 33 and the interior member 35 in the mounting direction of the trim portion 11 to the flange portion 33 compared to other portions. and the tip is separated greatly (see FIG. 4).

  Now, in this embodiment, regarding the bent part 41 attached corresponding to the rear upper corner part C2 of the door opening 4, the trim part 11 before being attached to the flange part 33 is compared with the other general part 42. The angle θ formed by the vehicle outer side wall portion 13 and the connecting portion 14 in the state is configured to be small. As will be described in detail later, the bent portion 41 is formed between the vehicle outer side wall portion 13 and the connecting portion 14 so that the inclination angle of the connecting portion 14 of the bent portion 41 is different from the inclination angle of the connecting portion 14 of the general portion 42. The cross-sectional shape is formed by tilting and deforming the connecting portion 14 toward the inside of the trim portion 11 with the boundary portion as the center. For this reason, the root part of the design lip 26 of the bent part 41 is located closer to the attachment direction side to the flange part 33 of the trim part 11 (opening side of the trim part 11) than the root part of the design lip 26 of the general part 42, The design lip 26 of the bent portion 41 is inclined more to the attachment direction side to the flange portion 33 of the trim portion 11 than the design lip 26 of the general portion 42. Moreover, although the bending part 41 and the general part 42 differ in the inclination angle of the connection part 14 and the design lip 26, regarding the vehicle outer side wall part 13, the inclination angle is the same. It should be noted that the angle θ between the vehicle outer side wall portion 13 and the connecting portion 14 in the general portion 42 is substantially unchanged (almost the same) when attached to the flange portion 33 and before attaching. ).

  The angle formed between the vehicle interior side wall portion 12 and the connecting portion 14 is larger at the bent portion 41 than at the general portion 42. That is, when the angle θ formed by the vehicle outer side wall portion 13 and the connecting portion 14 is reduced, the space between the vehicle inner side wall portion 12 and the flange portion 33 is reduced, and the repulsive force of the vehicle inner side holding lip 21 against the flange portion 33 is increased. As a result, the balance of the mounting state of the trim portion 11 may be lost. For this reason, in a state before the trim portion 11 is attached to the flange portion 33, the position of the front end portion of the vehicle inner side holding lip 21 in the vehicle width direction is substantially the same at the bent portion 41 and the general portion 42. By configuring the angle formed between the vehicle interior side wall portion 12 and the connecting portion 14 in the bent portion 41 to be relatively large, the above-described problem can be prevented.

  Further, as shown in FIG. 5, an angle θ formed by the vehicle outer side wall portion 13 and the connecting portion 14 is at a boundary portion (both ends in the longitudinal direction of the bending portion 41) with the general portion 42 at both ends of the bending portion 41. There is provided a gradual change portion 43 in which changes gradually. In the longitudinal direction of the weather strip 5, the connecting portion 14, the vehicle interior side wall portion 12, and the design lip 26 of the gradually changing portion 43 are inclined, but the vehicle exterior side wall portion 13 is not inclined. The vehicle outer side wall portion 13 in the deformed portion 43 and the vehicle outer side wall portion 13 of the bent portion 41 and the general portion 42 are flush with each other (the inclination angle is the same). In the present embodiment, the length of the gradually changing portion 43 in the longitudinal direction of the weather strip 5 is about 30 mm. Further, the length of the bent portion 41 in the longitudinal direction of the weather strip 5 is about 100 mm including the length of the pair of gradually changing portions 43, and the same cross-sectional shape portion sandwiched between the pair of gradually changing portions 43. The length is about 40 mm.

  The weather strip 5 configured as described above is obtained, for example, as follows. First, unvulcanized rubber is extruded together with the insert 17 from a die forming hole of an unillustrated extruder. At this time, a portion corresponding to the trim portion 11 has a shape in which the vehicle inner side wall portion 12 and the vehicle outer side wall portion 13 are widely opened.

  Subsequently, after the extruded unvulcanized rubber is vulcanized, a portion corresponding to the trim portion 11 is bent into a substantially U-shaped cross section. Thereafter, the sheet is cut into a predetermined length by a cutting apparatus (not shown). Further, in the present embodiment, the bending portion 41 is bent.

  The bending process of the bending part 41 is performed using a jig 51 shown in FIG. Specifically, the jig 51 is provided with a main body 52 having a flange-shaped holding portion 53 to which the trim portion 11 is fixed, and a wafer fixed to the holding portion 53. A molding portion 56 having a contact surface 57 capable of contacting the connecting portion 14 of the strip 5 and the design lip 26 is provided. The total length of the contact surface 57 of the molded portion 56 is about 100 mm corresponding to the bent portion 41 (including the gradually changing portion 43). Further, the abutment surface 57 of the molding portion 56 has an inclination angle (in the left-right direction in FIG. 6) of the first molding section that abuts on the same cross-sectional shape portion of the bent portion 41 (a portion sandwiched between the pair of gradually changing portions 43). (Inclination angle) is the largest, and the second molding section that contacts the gradually changing portion 43 is configured such that the inclination gradually decreases from the end on the first molding section side toward the end on the opposite side. Yes. And the trim part 11 of the bending part 41 is fixed to the holding part 53, the contact surface 57 of the shaping | molding part 56 is pressed on the outer surface of the connection part 14 and the design lip 26, the vehicle outer side wall part 13, the connection part 14, and Centering on the boundary part of the connecting part 14, the part on the side of the connecting part 14 is tilted and deformed toward the inside of the trim part 11. Thereby, in the bending part 41, the angle (theta) which the vehicle outer side wall part 13 and the connection part 14 make smaller than the general part 42 is comprised. As described above, the root portion of the design lip 26 of the bent portion 41 is positioned closer to the attachment direction side (lower side in FIG. 6) to the flange portion 33 of the trim portion 11 than the root portion of the design lip 26 of the general portion 42. At the same time, the weather strip 5 is obtained in which the design lip 26 of the bent portion 41 is inclined more to the attachment direction side (lower side in FIG. 6) to the flange portion 33 of the trim portion 11 than the design lip 26 of the general portion 42.

  Note that the jig 51 includes a stopper (not shown) that limits the amount of displacement of the molding portion 56, and the presence of the stopper can prevent the connecting portion 14 from being deformed more than necessary. Moreover, the bending process of the bending part 41 may be performed manually, or may be performed using a press device (by automation).

  As described above in detail, according to the present embodiment, the base portion of the design lip 26 of the bent portion 41 is flanged by reducing the angle θ between the vehicle outer side wall portion 13 and the connecting portion 14 in the bent portion 41. The design portion lip 26 of the bent portion 41 is inclined toward the interior member 35 side while being brought closer to the root portion side of the portion 33 and eventually to the interior member 35 side. For this reason, as described above, in the rear upper corner portion C2, the distal end portion of the flange portion 33 and the distal end portion of the interior member 35 are relatively separated from each other, and the bent portion 41 corresponds to the rear upper corner portion C2. Even when the trim portion 11 is deformed so as to open when the bend is bent, the design lip 26 of the bent portion 41 can be prevented from being separated from the interior member 35. Accordingly, it is possible to prevent the design lip 26 from being separated from the interior member 35, thereby causing a decrease in design property, a decrease in sealing property, and the like.

  Further, according to the present embodiment, the entire longitudinal direction of the weather strip 5 is formed by extrusion molding. For this reason, as in the case where a weather strip is constituted by the extrusion molding part and the mold molding part, the connection line appears on the appearance, or the difference in color and gloss occurs, leading to deterioration of the appearance quality. Such a situation can be avoided. Furthermore, the number of man-hours required for manufacturing can be reduced because mold forming is not required, and the manufacturing efficiency can be improved.

  Further, according to the present embodiment, the angle θ formed by the vehicle outer side wall portion 13 and the connecting portion 14 is not reduced in the entire longitudinal direction of the weather strip 5, but the angle θ in the bent portion 41 is reduced. It is said. For this reason, the design lip 26 and the interior member 35 are too pressed against each other due to the fact that the angle θ is configured to be small also in the general portion 42, and the design lip 26 is deformed into an irregular shape due to this. Thus, it is possible to avoid a situation in which the designability is deteriorated. In addition, since the insert 17 is embedded in the trim portion 11, the angle θ formed by the vehicle outer side wall portion 13 and the connecting portion 14 can be changed relatively easily and reliably at the bent portion 41.

  Further, due to the presence of the gradual change portion 43, the cross-sectional shape of the weather strip 5 changes abruptly at the boundary portion between the bent portion 41 and the general portion 42 (an extreme step is formed in the connecting portion 14 and the design lip 26). Can be prevented. Accordingly, it is possible to prevent a decrease in designability. In addition, it is possible to suppress a situation in which the sealing performance is deteriorated or the mounting state becomes unstable due to a sudden change in the cross-sectional shape of the weather strip 5. In particular, in this embodiment, since the length of the gradual change portion 43 is about 30 mm, the change in the cross-sectional shape of the weather strip 5 at the gradual change portion 43 can be made gradual, and the above-described effects are ensured. Played.

  Further, for example, the vehicle outer side wall portion 13 of the bent portion 41 and the connecting portion 14 are deformed by deforming the vehicle outer side wall portion 13 of the bent portion 41 so as to have a different inclination angle from the vehicle outer side wall portion 13 of the general portion 42. When the angle θ formed by is small, the base portion position and the inclination angle of the design lip 26 change, but only the vehicle outer side wall portion 13 of the bent portion 41 has a convex shape on the vehicle inner side. When attached, the vehicle exterior side wall portion 13 of the general portion 42 (near the boundary portion with the bent portion 41) is separated from the flange portion 33 vehicle exterior surface, which may cause a decrease in sealing performance. If the weather strip 5 is not torsionally deformed near the boundary between the bent portion 41 and the general portion 42 after the trim portion 11 is attached to the flange portion 33, the design lip 26 of the bent portion 41 is brought closer to the interior member 35. Therefore, there is a possibility that the function and effect of preventing the design lip 26 and the interior member 35 from separating from each other may not be performed well. However, it is difficult to accurately twist and deform the weather strip 5 together with the insert 17 by the elastic force of the holding lips 21 and 22 so that the above-described effects can be obtained. Further, even if the weather strip 5 is twisted and deformed well, this time, the stress associated with the deformation acts on the general part 42 and the like, so that the mounting state of the weather strip 5 becomes unstable. There is a risk of inviting.

  On the other hand, according to the present embodiment, the connecting portion 14 of the bent portion 41 is deformed so that the inclination angle differs from that of the connecting portion 14 of the general portion 42, thereby The angle θ formed with the connecting portion 14 is small. For this reason, even if the weather strip 5 is not twisted and deformed after the trim portion 11 is attached to the flange portion 33, the design lip 26 of the bent portion 41 is brought closer to the interior member 35 side and tilted toward the interior member 35 side. It becomes. Therefore, each of the above-mentioned effects can be achieved more reliably while avoiding the above problems.

  In addition, it is not limited to the description content of the said embodiment, For example, you may implement as follows. Of course, other application examples and modification examples not illustrated below are also possible.

  (A) In the above embodiment, the weather strip 5 provided at the peripheral edge of the door opening 4 of the automobile body 3 corresponding to the front door 2 is embodied, but the peripheral edge of another door such as a rear door is used. It is also possible to apply to a weather strip to be pressed. In the above embodiment, the weather strip 5 is made of EPDM, but may be made of another material such as olefin-based thermoplastic elastomer (TPO).

  (B) In the above embodiment, the weather strip 5 is provided corresponding to the front edge, the upper edge, and the rear edge of the door opening 4, but is particularly limited to such a configuration. For example, the weather strip 5 may be provided on the lower edge of the door opening 4 along the peripheral edge of the door opening 4.

  Further, both end portions of the extrusion forming portion constituting the weather strip 5 may be connected and formed by molding. In this case, the weather strip 5 is formed in an approximately annular shape by the extrusion molding part and the mold molding part, but both terminal parts of the extrusion molding part (mold molding part connecting both terminal parts) are used for doors. By providing the weather strip 5 so as to be positioned at the lower edge of the opening 4, the connection site is covered by a scuff plate or the like. For this reason, it is possible to prevent a situation in which the design property is deteriorated due to the visual recognition of such a connection site.

  (C) In the above embodiment, the lengths of the gradually changing portions 43 provided at both ends in the longitudinal direction of the bent portion 41 are each configured to be about 30 mm, but are not particularly limited to such a configuration. However, the length of each gradually changing portion 43 is preferably 15 mm or more and 100 mm or less. In this case, the change in the cross-sectional shape at the gradually changing portion 43 can be made gradual, and the problems caused by the sudden change in the cross-sectional shape between the bent portion 41 and the general portion 42 can be more reliably suppressed. Can do. In addition, when the length of the gradual change site | part 43 is less than 15 mm, the change of a cross-sectional shape will be too rapid, and there exists a concern about the fall of the designability etc. Moreover, when the length of the gradual change part 43 exceeds 100 mm, there exists a possibility of causing the jig 51 to become large (the whole length becomes large).

It is a perspective view of a car with a front door in an open state. It is a front view of a weather strip. It is the JJ sectional view taken on the line of FIG. 2 which shows the general site | part of a weather strip. It is the KK sectional view taken on the line of FIG. 2 which shows the bending site | part of the weather strip in the state before the attachment to a flange part. It is explanatory drawing which shows the weather strip near a bending | flexion site | part. It is explanatory drawing which shows the manufacturing process of a weather strip.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Automobile, 2 ... Door, 3 ... Automobile body, 4 ... Door opening part, 5 ... Weather strip, 11 ... Trim part, 12 ... Car inner side wall part, 13 ... Car outer side wall part, 14 ... Connection part, DESCRIPTION OF SYMBOLS 15 ... Seal part, 17 ... Insert, 21 ... Car inner side holding lip, 22 ... Car outer side holding lip, 26 ... Design lip, 33 ... Flange part, 35 ... Interior member, 41 ... Bending part, 42 ... General part, 43 ... Gradual change site.

Claims (4)

A trim portion having a substantially U-shaped cross section, which is attached to a flange portion provided along the periphery of the door opening of the vehicle body and includes a vehicle outer side wall portion, a vehicle inner side wall portion, and a connecting portion that connects both side wall portions. When,
A seal portion that protrudes from the vehicle outer side wall portion to the vehicle outer side and is pressed against the peripheral edge of the door when the door that opens and closes the door opening is closed;
A design lip extending from the vicinity of the boundary between the vehicle interior side wall and the connecting portion to the vehicle interior, and covering the edge of the interior member from the inner peripheral side of the door opening,
At least a part is formed by extrusion molding in the longitudinal direction, and the extrusion molding portion is bent and attached corresponding to the corner portion of the door opening,
The trim part is a weather strip in which a metal insert is embedded along its longitudinal direction,
As for the bent portion where the curvature is maximized in at least the mounting state of the trim portion to the flange portion, the vehicle outer side wall portion in the state before the trim portion is attached to the flange portion, compared to other general portions, An angle formed with the connecting portion is configured to be small ,
The root portion of the design lip in the bent portion is located on the attachment direction side to the flange portion of the trim portion than the root portion of the design lip in the general portion,
The weather strip, wherein the design lip at the bent portion is inclined more toward the mounting direction side of the trim portion to the flange portion than the design lip at the general portion . In the boundary portion with the general portion at both ends of the bent portion, a gradually changing portion where the angle formed by the vehicle outer side wall portion and the connecting portion gradually changes is provided,
The weather strip according to claim 1, wherein a length of the gradually changing portion is 15 mm or more and 100 mm or less. A vehicle outer side holding lip extending from the vehicle outer side wall portion toward the inside of the trim portion;
A vehicle interior holding lip extending from the vehicle interior side wall portion toward the inside of the trim portion,
The trim portion is attached to the flange portion by the pressure contact of the vehicle outer side holding lip and the vehicle inner side holding lip to the flange portion,
The bending portion is centered on the boundary portion between the vehicle outer side wall portion and the connecting portion so that the inclination angle of the connecting portion of the bending portion is different from the inclination angle of the connecting portion of the general portion. The weather strip according to claim 1 or 2, wherein a cross-sectional shape is formed by inclining and deforming the connecting portion toward the inside of the trim portion. The weatherstrip mounting structure according to any one of claims 1 to 3,
Of the door opening, in the corner portion to which the bent portion is attached, the front end portion of the flange portion and the front end portion of the interior member in the mounting direction of the trim portion to the flange portion as compared with other portions. mounting structure of the weather strip, characterized in that bets are separated greatly.

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