JP2010052505A - Weather strip - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a weather strip which prevents the deterioration of sealing performance without causing the drop of workability. <P>SOLUTION: A trim 11 mounted on a flange 33 of an opening for door includes an cabin-side holding lip 21, which extends from a cabin-side sidewall 12, and first to third exterior holding lips 22, 23, 24, which extend from an exterior sidewall 13. Each tip end of the first and second exterior holding lips 22, 23 made of a sponge material are positioned near the root side of the flange 33 from the tip end of the cabin-side holding lip 21, while the tip end of the third exterior holding lips 24 made of a solid material is positioned near the tip end side of the flange 33 from the tip end of the cabin-side holding lip 21. A distance W1 between the contact position A of the cabin-side holding lip 21 with the flange 33 and the contact position B of the third exterior holding lip 24 with the flange 33 is configured to be larger than a distance W2 between the contact position C of the first exterior holding lip 22 with the flange 33 and the contact position A. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a weather strip that is mounted along the periphery of a door opening of a vehicle.

  Generally, a weather strip is provided at the periphery of a door opening formed in an automobile body such as an automobile. As shown in FIG. 4, the weather strip 80 is attached to a flange portion 91 provided along the periphery of the door opening, and includes a vehicle inner side wall portion 82, a vehicle outer side wall portion 83, both side wall portions 82, A trim portion 81 having a substantially U-shaped cross section including a connecting portion 84 for connecting 83 and a seal portion 85 protruding from the vehicle outer side wall portion 83 to the vehicle outer side. When the door is closed, the seal 85 is pressed against the peripheral edge of the door, so that the space between the vehicle body and the door is sealed.

  In general, the weather strip 80 extends from the vehicle inner side wall portion 82 to the inside of the trim portion 81 and from the vehicle outer side wall portion 83 to the inside of the trim portion 81. A plurality of vehicle outer side holding lips 87 are provided. Then, by inserting the flange portion 91 inside the trim portion 81, the weather strip 80 is basically attached to the peripheral portion of the door opening portion based on the elastic force of the both holding lips 86 and 87. .

  The plurality of vehicle outer side holding lips 87 have a distal end portion on the root side of the flange portion 91 with respect to the front end portion of the vehicle inner side holding lip 86 in a state before the trim portion 81 (weather strip 80) is attached to the flange portion 91. A distinction is made between an outer peripheral lip 87a located on the upper side (upper in the figure) and an inner peripheral lip 87b whose distal end is located on the distal end side (lower side in the figure) of the flange portion 91 with respect to the distal end of the vehicle interior holding lip 86. Is done.

Further, the vehicle inner side holding lip 86 and the vehicle outer side holding lip 87 are basically made of a solid material like the trim portion 81, but recently, there is a technique in which the outer peripheral side lip 87a is made of a sponge material ( For example, see Patent Document 1). In this case, when the weather strip 80 is attached, the outer peripheral lip 87a is more reliably brought into pressure contact with the flange portion 91, so that the sealing performance between the trim portion 81 and the flange portion 91 can be improved. it can.
JP 2004-123032 A

  However, as shown in FIG. 4, when the outer peripheral lip 87a is made of a sponge material, the outer peripheral lip 87a may be expanded and formed larger than usual due to variation in foaming or the like ( Note that the two-dot chain line in the figure shows the normal size of the outer peripheral lip 87a). In this case, there is a concern that the repulsive force of the outer peripheral lip 87a against the flange portion 91 will increase due to the increase in the volume of the outer peripheral lip 87a.

  By the way, since the vehicle inner side holding lip 86, the outer peripheral side lip 87a, and the inner peripheral side lip 87b are in the relative positional relationship as described above, if the repulsive force of the outer peripheral side lip 87a increases, the flange portion The outer peripheral lip 87a is stretched with respect to 91, and the trim portion 81 is pivotally displaced so that the connecting portion 84 is displaced inward of the vehicle around the contact portion between the vehicle inner side holding lip 86 and the flange portion 91. I am worried about it.

  If the trim part 81 is pivotally displaced in this way, the balance of the intended mounting state of the trim part 81 is lost, and in some cases, the outer peripheral lip 87a (the contact part with the flange part 91) On the other hand, water or the like sprayed at a high pressure may easily enter the inside of the trim portion 81 from between the vehicle outer side holding lip 87 and the flange portion 91.

  On the other hand, in order to prevent the rotational displacement of the trim part 81 as described above, it is conceivable to increase the rigidity of the inner peripheral lip 87b or to provide a plurality of vehicle interior holding lips 86. When attaching the weather strip 80, it becomes difficult to insert the flange portion 91 inside the trim portion 81, and the workability may be reduced. Further, in order to prevent water that has entered the inside of the trim part 81 from entering the vehicle interior, it is conceivable to separately provide a seal member that is in pressure contact with the tip of the flange part 91 inside the trim part 81. There is a risk that the manufacturing workability is lowered and the cost is increased.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a weather strip that can prevent deterioration in sealing performance without causing deterioration in mounting workability and manufacturing workability. It is to provide.

  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 the means to respond | correspond as needed are added.

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 weather strip provided projecting from the vehicle outer side wall portion to the vehicle outer side, and having a seal portion pressed against a peripheral edge portion of the door when closing the door for opening and closing the door opening,
The trim portion is provided with only one vehicle interior holding lip extending from the vehicle inner side wall portion to the vehicle outer side and the connection portion side, and extends from the vehicle outer side wall portion to the vehicle inner side and the connection portion side. A first vehicle outer side holding lip, a second vehicle outer side holding lip, and a third vehicle outer side holding lip are provided;
The first and second vehicle outer side holding lips are made of sponge material, and each front end portion is located closer to the root side of the flange portion than the front end portion of the vehicle inner side holding lip,
The first vehicle outer side holding lip extends from a front end portion of the vehicle outer side wall portion,
The second vehicle outer side holding lip is in contact with the outer peripheral surface of the door opening portion of the vehicle inner side holding lip in a state before the trim portion is attached,
The third vehicle outer side holding lip is made of a solid material, and a tip portion thereof is located closer to a tip side of the flange portion than a tip portion of the vehicle inner side holding lip,
A metal insert is embedded in the trim portion along a longitudinal direction thereof, and the insert includes a vehicle exterior corresponding portion embedded in the vehicle exterior side wall portion and a vehicle interior embedded in the vehicle interior side wall portion. A corresponding portion and a connection portion corresponding portion embedded in the connecting portion and connecting the vehicle outer side corresponding portion and the vehicle inner side corresponding portion and having a substantially U-shaped cross section;
The vehicle interior corresponding portion is extended to the root side of the flange portion relative to the vehicle exterior corresponding portion in the mounting direction of the trim portion to the flange portion,
The root portion of the vehicle interior holding lip is provided at substantially the same position as the leading edge of the vehicle interior corresponding portion in the mounting direction of the trim portion to the flange portion,
In the mounted state of the trim portion, a distance W1 between a contact position A of the vehicle interior holding lip with the flange portion and a contact position B of the third vehicle exterior holding lip with the flange portion is: The weather strip, wherein the weather strip is configured to be larger than a distance W2 between a contact position C of the first vehicle outer side holding lip with the flange portion and the contact position A.

  According to the means 1, since the distance W1 is configured to be larger than the distance W2, the trim is performed around the position A based on the repulsive force of the third vehicle outer side holding lip as compared with the case where the distance W1 is equal to or less than the distance W2. The force for rotationally displacing the portion becomes relatively large, and as a result, the first and second vehicle outer side holding lips are further pressed against the flange portion. For this reason, even if the first and second vehicle exterior holding lips made of sponge material expand due to variations in foaming and their repulsive force increases, the contact portion between the vehicle interior retention lip and the flange portion As a result, it is possible to prevent the trim part from being pivotally displaced as the connecting part is displaced inward of the vehicle. Accordingly, it is possible to prevent a situation in which rainwater or the like easily enters from between the first and second vehicle outer side holding lips and the flange portion due to the rotational displacement, and the trim portion (first and second). It is possible to prevent a decrease in the sealing performance between the second vehicle outer side holding lip) and the flange portion.

  Furthermore, according to this means, the rigidity of the third vehicle outer side holding lip is not increased, or a plurality of vehicle inner side holding lips are not provided, but the vehicle inner side holding lip and the first to third vehicle outer side holding lips are provided. By setting the relative positional relationship as described above, the sealing performance between the first and second vehicle outer side holding lips and the flange portion is ensured. For this reason, it becomes difficult to insert the flange portion inside the trim portion by increasing the rigidity of the third vehicle outer side holding lip or providing a plurality of vehicle inner side holding lips (the weight during insertion is large). It is possible to avoid a situation in which the mounting workability is reduced.

  In addition, the inner part of the insert extends to the root side of the flange part than the corresponding part of the outer side, and the base part of the inner holding lip corresponds to the inner side in the mounting direction of the trim part to the flange part. It is provided at substantially the same position as the leading edge of the part. For this reason, the vehicle inner side seal lip is brought closer to the root side of the flange portion until it comes into contact with the second vehicle outer side holding lip without changing the inclination angle or the cross-sectional shape of the vehicle inner side holding lip as compared with the conventional weather strip. The contact position A can be located on the root side of the flange portion. Therefore, for example, in order to position the contact position A on the base side of the flange portion, the vehicle interior holding lip is formed so as to be inclined so as to approach the direction perpendicular to the flange portion. It is difficult to fit the parts, and it is possible to avoid a situation in which the mounting workability is reduced.

  In addition, the front end portion is positioned closer to the root side of the flange portion than the front end portion of the vehicle inner side holding lip, and two first and second vehicle outer side holding lips made of sponge material are provided, thereby improving the sealing performance. You can plan. In addition, since the vehicle interior holding lip extends from the portion of the vehicle interior side wall where the insert (vehicle interior corresponding portion) is embedded, the vehicle interior side lip is deformed along with the deformation of the vehicle interior retention lip when the trim portion is attached. It is possible to prevent such a situation that the part is deformed. Furthermore, since it is possible to sufficiently ensure the sealing performance between the trim portion and the flange portion as described above without separately providing a seal member that is in pressure contact with the front end portion of the flange portion inside the trim portion, It is possible to avoid a situation in which manufacturing workability is reduced and costs are increased due to the provision of the seal member separately.

  In addition, when the vehicle inner side holding lip and the flange portion are in contact with each other with a certain width in the mounting direction of the trim portion, there is “the contact position A of the vehicle inner side holding lip with the flange portion”. May be defined as “position A on the root side of the flange portion among the contact portions of the vehicle interior holding lip with the flange portion”. Further, when the first vehicle outer side holding lip and the flange portion are in contact with each other with a certain width in the trim mounting direction, “the contact position C of the first vehicle outer side holding lip with the flange portion”. "May be the" position C on the root side of the flange portion, of the contact portion with the flange portion of the first vehicle outer side holding lip ".

  The trim portion is embedded with a metal insert along its longitudinal direction, and the insert includes a plurality of strip-shaped bone fragment portions disposed substantially parallel to each other, and the bone fragment portions. The bone fragment portion is embedded in the vehicle interior corresponding portion embedded in the vehicle interior side wall, the vehicle exterior corresponding portion embedded in the vehicle exterior side wall, and the connection portion. The vehicle interior corresponding part and the connection corresponding part for connecting the vehicle exterior corresponding part may have a substantially U-shaped cross section.

Mean 2. The seal portion is configured in a hollow shape,
The root portion of the third vehicle outer side holding lip is provided at a position where at least a part of the root portion on the inner peripheral side of the door opening portion overlaps in the opening / closing direction of the door. The weather strip according to means 1.

  For example, when the root portion of the third vehicle outer side holding lip is positioned closer to the root side of the flange portion than the root portion of the seal portion, when the door is closed (when the seal portion is pressed against the door and deformed), the third vehicle There is a possibility that the trim part is rotationally displaced so that the connecting part is displaced inward of the vehicle around the outer holding lip. On the other hand, when the root portion of the third vehicle outer side lip is positioned on the front end side of the flange portion with respect to the root portion of the seal portion, the intermediate position in the extending direction of the vehicle outer side wall portion may be curved and deformed when the door is closed. There is. On the other hand, as in the case of the present means 2, the above-mentioned problem can be avoided by making the root position of the third vehicle outer side holding lip substantially coincide with the root position of the seal portion in the door opening / closing direction (vehicle width direction). can do. Therefore, deformation and displacement of the trim portion can be prevented, and deterioration of the sealing performance can be suppressed.

  Means 3. The angle formed by the vehicle outer side wall portion and the connecting portion is an acute angle, and in the mounting direction of the trim portion to the flange portion, the root portion of the vehicle inner side corresponding portion is more than the root portion of the vehicle outer side corresponding portion. The weather strip according to means 1 or 2, wherein the weather strip is located on a root side of the flange portion.

  According to the means 3, the angle formed between the vehicle outer side wall portion and the connecting portion is set to an acute angle, and the connecting portion corresponding portion is inclined to the root side of the flange portion in accordance with the inclination of the connecting portion. The root portion of the inner corresponding portion can be positioned on the root side of the flange portion. For this reason, even when extending the vehicle interior corresponding portion to the root side of the flange portion relative to the vehicle exterior corresponding portion as described above, the extension length of the vehicle interior corresponding portion is longer than the conventional one. Can be prevented. Therefore, the situation where the weight of the insert increases can be prevented, and the weather strip can be reduced in weight.

Means 4. The distance between each root portion of the first vehicle outer side holding lip and the second vehicle outer side holding lip is configured to be shorter than the protruding length of the first vehicle outer side holding lip and the second vehicle outer side holding lip,
4. The means according to claim 1, wherein the first vehicle outer side holding lip and the second vehicle outer side holding lip are configured not to contact each other even when the trim portion is attached. Weather strip.

  According to the means 4, the first and second vehicles are arranged such that the distance between the root portions of the first and second vehicle outer side holding lips is shorter than the protruding lengths of the first and second vehicle outer side holding lips. An outer retaining lip is placed in close proximity. As a result, the first vehicle outer side holding lip and the vehicle inner side holding lip can be disposed close to each other, and as described above, the vehicle inner side seal lip is provided as close as possible to the root side of the flange portion, and the first and second vehicles are provided. The effect of preventing the deterioration of the sealing performance between the outer holding lip and the flange portion is more reliably exhibited.

  Further, the first and second vehicle outer side holding lips are configured not to contact each other even when the trim portion is attached. For this reason, for example, when the trim portion is attached, the first vehicle outer side holding lip is in contact with and supported by the second vehicle outer side holding lip, and the first vehicle outer side holding lip does not accurately follow and deform. Can be avoided. Accordingly, the trim portion is inclined due to the first and second vehicle outer side holding lips protruding against the flange portion, and the sealing performance between the first and second vehicle outer side holding lips and the flange portion is increased. It is possible to more reliably prevent a situation in which a decrease is caused.

  Hereinafter, an embodiment will be described with reference to the drawings. FIG. 1 is a perspective view of an automobile with a front door in an open state. FIG. 2 is a cross-sectional view showing the weather strip in a state before being attached to the flange portion. FIG. 3 is a cross-sectional view showing the weather strip in an attached state to the flange portion.

  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. The weather strip 5 includes an extrusion molding portion attached along the peripheral edge portion of the door opening 4 and a mold molding portion for connecting both end portions of the extrusion molding portion, and has a substantially annular shape as a whole. ing.

  As shown in FIGS. 2 and 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 having a letter shape and a seal portion 15 provided so as to protrude from the vehicle outer side wall portion 13 to the vehicle outer side and having a hollow portion 15a therein are provided. Further, the vehicle interior side wall portion 12 and the vehicle exterior side wall portion 13 extend substantially parallel to each other.

  Further, the weather strip 5 has a 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 a weather strip 5 extending from the vehicle outer side wall portion 13 toward the vehicle inner side and toward the connecting portion 14 side. A first vehicle outer side holding lip 22, a second vehicle outer side holding lip 23, and a third vehicle outer side holding lip 24 are provided.

  Further, an inner panel 31 and an outer panel 32 constituting the automobile body 3 are joined to the peripheral edge portion of the door opening 4 to form a flange portion 33. Then, by relatively fitting the flange portion 33 inside the trim portion 11, the weather strip 5 is basically based on the elastic force or the like by the vehicle inner side holding lip 21 and the vehicle outer side holding lips 22 to 24. Attached to the peripheral edge of the door opening 4. 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. A plate-like reinforcement may be provided between the panels 31 and 32 in order to increase the strength of the flange portion 33.

  In addition, the weather strip 5 includes a cover lip 26 that extends from the connecting portion 14 toward the inside of the vehicle and covers an end portion of an interior product (not shown) such as a garnish. In the present embodiment, the trim portion 11, the vehicle inner side holding lip 21, the third vehicle outer side holding lip 24, and the cover lip 26 are made of solid EPDM (ethylene-propylene-diene copolymer rubber). The second vehicle outer side holding lips 22 and 23 are made of sponge EPDM. Further, the weather strip 5 is provided with a cover portion 27 that covers the cover lip 26 and the outer surface of the connecting portion 14. The covering portion 27 of the present embodiment is made of a polyethylene sheet.

  Further, a metal insert 17 is embedded in the trim portion 11 along the longitudinal direction thereof. The insert 17 of the present embodiment connects the bone fragment portions 18 having a substantially U-shaped cross section embedded at predetermined intervals along the longitudinal direction of the trim portion 11 and the bone fragment portions 18 to each other at a substantially central portion thereof. This is a so-called center bond type insert having a center bond portion (not shown). The bone fragment 18 is embedded in the vehicle interior corresponding portion 18a embedded in the vehicle interior side wall portion 12, the vehicle exterior corresponding portion 18b embedded in the vehicle exterior side wall portion 13, and the connecting portion 14 and is embedded in the vehicle interior corresponding portion 18a. And a connecting portion corresponding portion 18c that connects the vehicle outer side corresponding portion 18b, and is bent back together with the trim portion 11 in the bending process after extrusion, so that the cross section is substantially U-shaped. On the other hand, the center bond portion is buried so as to be located at the approximate center in the connecting portion 14. In the present embodiment, the vehicle interior corresponding portion 18a of the insert 17 (bone fragment 18) extends to the root side of the flange portion 33 rather than the vehicle exterior corresponding portion 18b.

  Now, the first and second vehicle outer side holding lips 22, 23 made of sponge EPDM have a leading end portion that is more flanged than the leading end portion of the outer side holding lip 21 in the mounting direction of the trim portion 11 to the flange portion 33. Is located on the base side (in this example, the outer periphery side of the door opening 4: the upper side in FIGS. 2 and 3). Further, the third vehicle outer side holding lip 24 made of solid EPDM has a front end portion of the trim portion 11 attached to the flange portion 33 with respect to the front end side of the flange portion 33 (the main portion of the trim portion 11 than the front end portion of the vehicle outer side holding lip 21). In the example, it is located on the inner peripheral side of the door opening 4 (downward in FIGS. 2 and 3).

  Specifically, the first vehicle outer side holding lip 22 includes a first side portion 22a extending from the front end portion of the vehicle outer side wall portion 13 to the inner side of the vehicle and the root side of the flange portion 33, and a front end portion of the first side portion 22a. And a second side portion 22b extending toward the inside of the vehicle and the connecting portion 14 side, and has a substantially square cross section. Since the first vehicle outer side holding lip 22 is substantially square-shaped, when a manufacturing error of the flange portion 33 or the trim portion 11 occurs, the first vehicle outer side holding lip 22 expands and contracts further. Transforms into

  Further, the second vehicle outer side holding lip 23 extends substantially linearly in a state before the trim portion 11 is attached, and is in contact with the surface of the vehicle inner side holding lip 21 on the outer peripheral side of the door opening portion 4 at the front end portion. (See FIG. 2).

  Further, the root portion of the third vehicle outer side holding lip 24 is provided at the same position as the root portion on the inner peripheral side of the door opening 4 of the seal portion 15 in the mounting direction of the trim portion 11 to the flange portion 33. . That is, in the opening / closing direction (vehicle width direction) of the door 2, the root position of the third vehicle outer side holding lip 24 and the root position of the seal portion 15 coincide with each other.

  The vehicle interior holding lip 21 is longer and thicker than the vehicle exterior holding lips 22-24. For this reason, when the trim portion 11 (the weather strip 5) is attached to the flange portion 33, the vehicle-side holding lip 21 presses the vehicle-side holding lips 22 to 24 against the flange portion 33, and the vehicle-side side wall portion 13 is It will extend along the flange portion 33. In addition, by providing the vehicle outer side holding lips 22 to 24, the vehicle outer side wall is more effective when the flange 33 has irregularities such as welding marks as compared with the case where the vehicle outer side wall 13 is brought into direct contact with the flange 33. A situation in which a gap is partially formed between the portion 13 and the flange portion 33 can be prevented.

  Further, the root portion of the vehicle interior holding lip 21 is provided at the same position as the tip edge of the vehicle interior corresponding portion 18a of the insert 17 in the mounting direction of the trim portion 11 to the flange portion 33. It should be noted that in the mounting direction of the trim portion 11 to the flange portion 33, the front end portions of the vehicle inner side wall portion 12 and the vehicle outer side wall portion 13 are substantially in the same position (the vehicle outer side wall portion 13 is the vehicle inner side wall portion. 12 is located slightly on the base side of the flange portion 33 (upward in FIGS. 2 and 3). In addition, the front end portion of the vehicle interior holding lip 21 is bent toward the connecting portion 14. For this reason, in the attachment state of the trim part 14, the contact area of the vehicle inner side holding | maintenance lip 21 and the flange part 33 becomes large, and the attachment state is stabilized.

  Further, as shown in FIG. 3, in the present embodiment, the position A closest to the root of the flange portion 33 among the contact portions with the flange portion 33 of the vehicle inner side holding lip 21, and the third vehicle outer side holding lip 24. The distance W1 between the contact portion with the flange portion 33 and the position B closest to the root side of the flange portion 33 is the most flange portion 33 among the contact portions with the flange portion 33 of the first vehicle outer side holding lip 22. The distance W2 between the position C on the root side and the position A is longer. In addition, the distance between the root of the first vehicle outer side holding lip 22 and the second vehicle outer side holding lip 23 is configured to be shorter than the protruding lengths of the first and second vehicle outer side holding lips 22, 23. Yes. Further, even when the trim portion 11 is attached to the flange portion 33, the first vehicle outer side holding lip 22 and the second vehicle outer side holding lip 23 are configured not to contact each other.

  Further, as shown in FIG. 2, the angle θ formed by the vehicle outer side wall portion 13 (the inner side surface) and the connecting portion 14 (the inner side surface) is an acute angle. Further, the insert 17 is embedded along the inner surface of the trim portion 11, the connecting portion corresponding portion 18 c extends while being inclined toward the inner side of the vehicle and the root side of the flange portion 33, and the root of the inner side corresponding portion 18 a is the outer side of the vehicle. It is located closer to the root side of the flange portion 33 than the root portion of the corresponding portion 18b.

  As described above in detail, according to the present embodiment, the contact position A of the vehicle interior holding lip 21 with the flange portion 33 and the contact position B of the third vehicle exterior holding lip 24 with the flange portion 33 are determined. The distance W1 between them is configured to be larger than the distance W2 between the contact position C and the contact position A with the flange portion 33 of the first vehicle outer side holding lip 22. For this reason, compared with the case where the distance W1 is equal to or less than the distance W2, the force for rotationally displacing the trim portion 11 around the position A based on the repulsive force of the third vehicle inner side holding lip 24 becomes relatively large. In addition, the first and second vehicle outer side holding lips 22 and 23 are pressed against each other by the flange portion 33. For this reason, even when the first and second vehicle outer side holding lips 22 and 23 made of sponge EPDM are expanded due to foaming variation and their repulsive force is increased, the vehicle inner side holding lip 21 and the flange portion 33 are increased. With the contact position A as the center, it is possible to prevent a situation in which the trim portion 11 is rotationally displaced such that the connecting portion 14 is displaced inward of the vehicle. Accordingly, it is possible to suppress a situation in which rainwater or the like easily enters from between the first and second vehicle outer side holding lips 22 and 23 and the flange portion 33 due to the rotational displacement, and the trim portion 11 (first and second vehicle outer side holding lips 22, 23) and the flange portion 33 can be prevented from being deteriorated in sealing performance.

  Furthermore, according to the present embodiment, instead of increasing the rigidity of the third vehicle outer side holding lip 24 or providing a plurality of vehicle inner side holding lips 21, the vehicle inner side holding lip 21 and the first to third vehicle outer side lips are provided. By setting the relative positional relationship with the holding lips 22 to 24 as described above, the sealing performance between the first and second vehicle outer side holding lips 22 and 23 and the flange portion 33 is ensured. For this reason, it becomes difficult to insert the flange portion 33 inside the trim portion 11 due to the increased rigidity of the third vehicle outer side holding lip 24 or the provision of a plurality of vehicle inner side holding lips 21 (when inserted). Therefore, it is possible to avoid a situation in which the mounting workability is reduced.

  Further, the inner side corresponding portion 18a of the insert 17 extends to the root side of the flange portion 33 (upward in FIGS. 2 and 3) than the outer side corresponding portion 18b, and the root portion of the inner holding lip 21 is The trim portion 11 is provided at substantially the same position as the leading edge of the vehicle interior corresponding portion 18a in the mounting direction of the trim portion 11 to the flange portion 33. Therefore, the root of the flange 33 is maintained until the vehicle inner side seal lip 21 comes into contact with the second vehicle outer side holding lip 23 without changing the inclination angle or the cross-sectional shape of the vehicle inner side holding lip 21 as compared with the conventional weather strip. The abutting position A can be located on the root side of the flange portion 33. Therefore, for example, in order to position the contact position A on the base side of the flange portion 33, the inboard holding lip 21 is formed so as to be inclined so as to approach the direction orthogonal to the flange portion 33, thereby causing the flange portion 33. On the other hand, it is difficult to fit the trim part 11, and it is possible to avoid a situation in which the workability of attachment is reduced.

  In addition, the front end portion is located closer to the root side of the flange portion 33 than the front end portion of the vehicle inner side holding lip 21, and the two first and second vehicle outer side holding lips 22, 23 made of sponge EPDM are provided. The sealing performance can be improved. Further, since the vehicle interior holding lip 21 extends from a portion of the vehicle interior side wall portion 12 where the insert 17 (vehicle interior corresponding portion 18a) is embedded, the vehicle interior holding lip 21 is deformed when the trim portion 11 is attached. Accordingly, it is possible to prevent the vehicle inner side wall portion 12 from being deformed. Further, as described above, sufficient sealing performance between the trim portion 11 and the flange portion 33 can be ensured without providing a separate seal member that presses the tip of the flange portion 33 inside the trim portion 11. Therefore, it is possible to avoid a situation in which the manufacturing workability is reduced and the cost is increased due to the provision of the seal member separately.

  Further, for example, the root portion of the third vehicle outer side holding lip 24 is located closer to the root side of the flange portion 33 (outer side of the door opening portion 4) than the root portion of the seal portion 15 on the inner peripheral side of the door opening portion 4. In this case, when the door 2 is closed (when the seal portion 15 is deformed by being pressed against the door 2), the trim portion 11 is arranged so that the connecting portion 14 is displaced to the vehicle inner side around the third vehicle outer side holding lip 24. There is a risk of rotational displacement. On the other hand, when the root portion of the third vehicle outer lip 24 is positioned on the front end side of the flange portion 33 with respect to the root portion on the inner peripheral side of the door opening 4 of the seal portion 15, There is a possibility that the intermediate position in the extending direction of the portion 13 (the portion between the second vehicle outer lip 23 and the third vehicle outer lip 24) is curved and deformed. On the other hand, as in this embodiment, the position of the root of the third vehicle outer side holding lip 24 and the position of the root of the seal portion 15 on the inner periphery side of the door opening 4 are set in the opening / closing direction of the door 2 (vehicle width direction). ), It is possible to avoid the above problem. Therefore, deformation and displacement of the trim part 11 can be prevented, and deterioration of the sealing performance can be suppressed.

  Further, the angle θ formed between the vehicle outer side wall portion 13 and the connecting portion 14 is an acute angle, and the root portion of the vehicle inner side corresponding portion 18a is attached to the vehicle outer side corresponding portion 18b in the mounting direction of the trim portion 11 to the flange portion 33. It is located closer to the root side of the flange portion 33 than the root portion. That is, by making the angle θ formed by the vehicle outer side wall portion 13 and the connecting portion 14 an acute angle, the connecting portion corresponding portion 18c is inclined and extended toward the root side of the flange portion 33 in accordance with the inclination of the connecting portion 14. The root portion of the vehicle interior corresponding portion 18a can be located on the root side of the flange portion 33 (outer side of the door opening 4). For this reason, even when extending the vehicle interior corresponding portion 18a to the root side of the flange portion 33 with respect to the vehicle exterior corresponding portion 18b as described above, the extension length of the vehicle interior corresponding portion 18a is the same as the conventional one. The situation of becoming longer than that can be suppressed. Therefore, the situation where the weight of the insert 17 increases can be prevented, and the weather strip 5 can be reduced in weight.

  Further, the distance between the root portions of the first vehicle outer side holding lip 22 and the second vehicle outer side holding lip 23 is configured to be shorter than the protruding lengths of the first vehicle outer side holding lip 22 and the second vehicle outer side holding lip 23. ing. As described above, the first and second vehicle outer side holding lips 22, 23 are arranged close to each other, and as a result, the first vehicle outer side holding lip 22 and the vehicle inner side holding lip 21 can be arranged close to each other. Therefore, as described above, the vehicle interior seal lip 21 is provided as close as possible to the root side of the flange portion 33 to reduce the sealing performance between the first and second vehicle exterior holding lips 22, 23 and the flange portion 33. The effect of preventing is more reliably exhibited. Further, the first vehicle outer side holding lip 22 and the second vehicle outer side holding lip 23 are configured not to contact each other even when the trim portion 11 is attached to the flange portion 33. For this reason, for example, when the trim portion 11 is attached, the first vehicle outer side holding lip 22 comes into contact with and supported by the second vehicle outer side holding lip 23, and the first vehicle outer side holding lip 22 does not accurately follow and deform. Can be avoided. Accordingly, the trim portion 11 is inclined and attached so that the connecting portion 14 is displaced toward the vehicle interior due to the first and second vehicle outer side holding lips 22 and 23 being stretched against the flange portion 33. Therefore, it is possible to more reliably prevent a situation in which the sealing performance between the first and second vehicle outer side holding lips 22 and 23 and the flange portion 33 is deteriorated.

  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 rear door, back door, luggage door (trunk lid) ), Roof doors (sliding roof panels), weather strips that are pressed against the peripheral edge of other opening and closing members such as sliding doors can also be applied.

  (B) In the above embodiment, the mounting direction of the trim portion 11 to the flange portion 33 coincides with the inner and outer peripheral directions of the door opening 4. You may employ | adopt the structure which the part 33 inclines and extends.

  (C) In the above embodiment, the distance between the root of the second vehicle outer side holding lip 23 and the root of the third vehicle outer side holding lip 24 is the same as the distance between the root of the first vehicle outer side holding lip 22 and the second vehicle. It is good also as being set to 2 times or more and less than 6 times the distance between the outer side holding lips 23. If the ratio of the distances is less than twice, it may be difficult to make the distance W1 between the positions A and B larger than the distance W2 between the positions A and C. If the ratio of the distances is larger than six times, the root portion of the third vehicle outer side holding lip 24 and the root portion of the seal portion 15 cannot be aligned, or the third vehicle outer side holding lip 24 is There is a risk that the entire balance may be lost, for example, it may be too close to the connecting portion 14 side to be able to press the flange portion 33 accurately. On the other hand, these problems can be suppressed by setting the ratio as described above.

It is a perspective view of a car with a front door in an open state. It is sectional drawing which shows the weather strip in the state before attachment. It is sectional drawing which shows the weather strip in an attachment state. It is sectional drawing which shows the conventional 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, 18a ... Car inner side corresponding part, 18b ... Car outer side corresponding part, 18c ... Connection part corresponding part, 21 ... Car inner side holding | maintenance lip, 22 ... 1st car outer side holding | maintenance lip, 23 ... Second Car outer side holding lip, 24... Third car outer side holding lip, 33.

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 weather strip provided projecting from the vehicle outer side wall portion to the vehicle outer side, and having a seal portion pressed against a peripheral edge portion of the door when closing the door for opening and closing the door opening,
The trim portion is provided with only one vehicle interior holding lip extending from the vehicle inner side wall portion to the vehicle outer side and the connection portion side, and extends from the vehicle outer side wall portion to the vehicle inner side and the connection portion side. A first vehicle outer side holding lip, a second vehicle outer side holding lip, and a third vehicle outer side holding lip are provided;
The first and second vehicle outer side holding lips are made of sponge material, and each front end portion is located closer to the root side of the flange portion than the front end portion of the vehicle inner side holding lip,
The first vehicle outer side holding lip extends from a front end portion of the vehicle outer side wall portion,
The second vehicle outer side holding lip is in contact with the outer peripheral surface of the door opening portion of the vehicle inner side holding lip in a state before the trim portion is attached,
The third vehicle outer side holding lip is made of a solid material, and a tip portion thereof is located closer to a tip side of the flange portion than a tip portion of the vehicle inner side holding lip,
A metal insert is embedded in the trim portion along a longitudinal direction thereof, and the insert includes a vehicle exterior corresponding portion embedded in the vehicle exterior side wall portion and a vehicle interior embedded in the vehicle interior side wall portion. A corresponding portion and a connection portion corresponding portion embedded in the connecting portion and connecting the vehicle outer side corresponding portion and the vehicle inner side corresponding portion and having a substantially U-shaped cross section;
The vehicle interior corresponding portion is extended to the root side of the flange portion relative to the vehicle exterior corresponding portion in the mounting direction of the trim portion to the flange portion,
The root portion of the vehicle interior holding lip is provided at substantially the same position as the leading edge of the vehicle interior corresponding portion in the mounting direction of the trim portion to the flange portion,
In the mounted state of the trim portion, a distance W1 between a contact position A of the vehicle interior holding lip with the flange portion and a contact position B of the third vehicle exterior holding lip with the flange portion is: The weather strip, wherein the weather strip is configured to be larger than a distance W2 between a contact position C of the first vehicle outer side holding lip with the flange portion and the contact position A. The seal portion is configured in a hollow shape,
The root portion of the third vehicle outer side holding lip is provided at a position where at least a part of the root portion on the inner peripheral side of the door opening portion overlaps in the opening / closing direction of the door. The weather strip according to claim 1.   The angle formed by the vehicle outer side wall portion and the connecting portion is an acute angle, and in the mounting direction of the trim portion to the flange portion, the root portion of the vehicle inner side corresponding portion is more than the root portion of the vehicle outer side corresponding portion. The weather strip according to claim 1, wherein the weather strip is located on a root side of the flange portion. The distance between each root portion of the first vehicle outer side holding lip and the second vehicle outer side holding lip is configured to be shorter than the protruding length of the first vehicle outer side holding lip and the second vehicle outer side holding lip,
The first vehicle outer side holding lip and the second vehicle outer side holding lip are configured not to contact each other even when the trim portion is attached. Weather strip as described in.

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