JP7106380B2 - door weatherstrip - Google Patents

Description

The present invention relates to door weatherstripping.

2. Description of the Related Art Conventionally, research and development of door weatherstrips having various structures have been carried out in order to improve sealing properties, sound insulation properties, and the like at the periphery of automobile doors.

For example, Patent Document 1 discloses a door weatherstrip 50 fixed to a door peripheral portion 56 of an automobile, as shown in FIG. The door weatherstrip 50 has a mounting base portion 51 , a hollow seal portion 52 and a rear seal lip portion 54 . A substantially S-shaped curved portion 53 is formed on the inner side wall of the hollow seal portion 52 . The rear seal lip portion 54 is formed at a position far from the mounting base portion 51 in the hollow seal portion 52 and always contacts the door peripheral edge portion 56 to support the hollow seal portion 52 .

JP 2008-55977 A

In the door weatherstrip, the bending deformation that occurs in the hollow seal portion may generate a force that pulls the one end of the mounting base on the inside of the vehicle toward the rear. However, there is a problem that the performance and sound insulation performance are deteriorated.

The door weatherstrip 50 described in Patent Document 1 is fixed to the door peripheral edge portion 56 with a clip 55 at a predetermined interval, but the rear seal lip portion 54 is arranged at a position far from the mounting base portion 51. Therefore, when the hollow seal portion 52 is flexurally deformed in the process of closing the door, there is little possibility that one end of the mounting base portion 51 on the inside of the vehicle will float.

However, depending on the shape of the door peripheral portion 56, the rear seal lip portion 54 cannot be formed at a position far from the mounting base portion 51 in the hollow seal portion 52, and the rear seal lip portion 54 is formed at a position near the mounting base portion 51. Sometimes you have to. As a result, in the process of closing the door, bending deformation that occurs in the hollow seal portion 52 may cause one end of the mounting base portion 51 on the inside of the vehicle to float, degrading the sealing performance and sound insulation performance.

An object of one aspect of the present invention is to provide a door weatherstrip that is excellent in sealing performance and sound insulation even when the rear seal lip portion is formed at a position close to the mounting base.

In order to solve the above problems, a door weatherstrip according to an aspect of the present invention includes a mounting base mounted along a peripheral edge of a door of an automobile, and a door opening in the body of the automobile in the process of closing the door. and a hollow seal portion elastically contacting the periphery of the door, wherein the mounting base portion and the vehicle outer side wall formed on the vehicle outer side of the hollow seal portion are connected to the vehicle outer side of the door outer peripheral side surface of the mounting base portion. A rear seal lip portion connected via a vehicle-exterior connecting wall, protruding toward the vehicle exterior from a vehicle-exterior side surface of the door center side end of the vehicle-exterior wall, and having a tip portion in elastic contact with the rear surface of the peripheral edge portion. wherein the mounting base and the inner side wall formed on the inner side of the car in the hollow seal portion are connected to the inner side of the door on the outer peripheral side of the mounting base and the inner side connecting wall , and a first connecting wall connected to the outer peripheral side surface of the door of the inner connecting wall, and the first connecting wall bends toward the outer periphery of the door and toward the center of the door while extending toward the inner side of the vehicle. Both the first connecting wall and the rear seal lip portion are positioned closer to the center of the door than the first surface on the peripheral edge of the door opening, which faces the mounting surface of the peripheral edge portion. In addition, the door weatherstrip is attached to at least portions corresponding to the side sill side and the lock side of the periphery of the door opening.

ADVANTAGE OF THE INVENTION According to one aspect of the present invention, it is possible to provide a door weatherstrip that is excellent in sealing performance and sound insulation even when the rear seal lip portion is formed at a position close to the mounting base.

(a) is a perspective view showing the appearance of an automobile to which the door weatherstrip is attached, and (b) is a side view schematically showing the overall shape of the door weatherstrip attached to the periphery of the front door in a closed loop. It is a diagram. FIG. 2 is a diagram showing the mounting state of the door weatherstrip according to Embodiment 1 of the present invention, (a) showing the mounting state in the roof section of the front door, (b) showing the mounting state in the hinge section, (c) ) indicates the mounting state in the side sill section, and (d) indicates the mounting state in the lock section. FIG. 2 is a cross-sectional view of the lock section showing the structure of the door weatherstrip according to Embodiment 1 of the present invention; FIG. 4 is a cross-sectional view of a lock section showing the structure of a door weatherstrip according to Embodiment 2 of the present invention; 8(a) to 8(c) are cross-sectional views of the lock section showing the structures of modified examples of the door weatherstripping according to Embodiment 2 of the present invention, respectively. FIG. 8 is a cross-sectional view of a lock section showing the structure of a door weatherstrip according to Embodiment 3 of the present invention; FIG. 4 is a cross-sectional view showing how the vehicle-interior end of the mounting base is lifted in various types of door weatherstrips. FIG. 2 is a cross-sectional view of a roof section showing the structure of a conventional door weatherstrip.

[Embodiment 1]
<Installation example of door weather strip>
1 and 2, the structure around the door opening 2 in the automobile 1 to which the door weatherstrip 10 according to the present invention is attached will be described. As shown in FIG. 1(a), a vehicle 1 is provided with a front door 3. As shown in FIG. A door opening 2 is formed in the body of the automobile 1 where the front door 3 is integrated with the body by means of a hinge (not shown) when the door is closed. The front door 3 is an openable and closable automobile part for closing the door opening 2 .

Further, a door weather strip 10 is attached in a closed loop shape over the entire periphery of the door peripheral edge portion (peripheral edge portion) 3a of the front door 3 (see FIG. 1(b)). The door weatherstrip 10 is an automobile part for sealing between the peripheral edge 2a of the door opening 2 and the door peripheral edge 3a. A door weather strip 10 attached to the door peripheral edge 3a is elastically contacted with the peripheral edge 2a of the door opening 2, thereby sealing the gap between the peripheral edge 2a of the door opening 2 and the door peripheral edge 3a.

The door weatherstrip 10 is formed as a single extrusion. As a result, the door weatherstrip 10 can be provided at a low cost because the door weatherstrip 10 has a single winding structure.

The door weather strip 10 is made of spongy rubber. EPDM (ethylene-propylene-diene rubber), for example, can be used as the rubber material. However, thermoplastic elastomers (olefinic or styrenic thermoplastic elastomers), other rubber materials, or other elastic materials having rubber-like elasticity may be used as the molding material. A different material may be used for each portion of the door weatherstrip 10 . Also, it may be partially or wholly made of a solid material.

As shown in FIG. 2, the door weatherstrip 10 may be a roof section [see FIG. 2(a)], a hinge section [see FIG. 2(b)], a side sill section [see FIG. 2(c)], or In the lock section (see FIG. 2(d)), it is attached at a position corresponding to the shape of each section on the door peripheral portion 3a.

The upper part of the peripheral edge 2a of the door opening 2 is called the roof side part, the lower part is called the side sill side part, the front side part is called the hinge side part, and the rear side part. is called the lock side part.

Similarly, the upper portion of the door peripheral portion 3a is called the roof side portion, the lower portion is called the side sill side portion, the front side portion is called the hinge side portion, and the rear portion is called the rear side portion. is called the lock side part. The door weatherstrip 10 is divided into portions corresponding to the roof side, side sill side, hinge side, and lock side depending on the portion to which the door peripheral portion 3a is attached.

Also, the portion of the door weatherstrip 10 with which the edge 2a of the door opening 2 makes elastic contact changes depending on the position of the door edge 3a to which the door weatherstrip 10 is attached.

The mounting manner of the door weatherstrip 10 described above is merely an example, and the door weatherstrip 10 may be mounted, for example, on the periphery (not shown) of the rear door 4 of the automobile 1 . Further, for example, the door weather strip 10 may be attached to a peripheral edge portion (not shown) of a back door provided in the automobile 1 (in the same case as a front door or a rear door provided in the side portion of the vehicle). In other words, the door weatherstrip 10 and other door weatherstrips according to the present invention are not particularly limited in terms of the type of opening/closing body such as a door, the structure of the door peripheral portion, and the like.

Further, the door weatherstrip 10 does not have to be attached to the entire circumference of the door peripheral edge portion 3a, and may be attached only to a part of the door peripheral edge portion 3a. For example, it may be attached only to the side sill section at the door rim 3a.

<Structure of door weather strip>
The structure of the door weatherstrip 10 according to the present embodiment will be described with reference to FIGS. 2 and 3. FIG. As shown in FIG. 3 , the door weatherstrip 10 according to this embodiment includes a mounting base portion 11 , a hollow seal portion 12 and a rear seal lip portion 14 .

The mounting base portion 11 and the vehicle interior side wall 12a formed on the vehicle interior side of the hollow seal portion 12 are connected to the vehicle interior side wall 16a of the door outer peripheral side surface of the mounting base portion 11 and the vehicle interior connection wall 16a. They are connected via a curved first connection wall 13 connected to the outer peripheral side surface.

In the entire text of this specification, the side of the mounting base 11 (including FIGS. 2 to 8) that contacts the mounting surface 3a-1 of the door peripheral portion 3a is referred to as the "door center side" of the door weatherstrip 10. (mounting base side)”, and the opposite side is called the “outer peripheral side of the door”.

The first connecting wall 13 extends toward the inside of the vehicle while curving toward the outer periphery of the door and the center of the door. Both the first connecting wall 13 and the rear seal lip portion 14 are located closer to the center of the door than the first surface 2a-1 on the peripheral edge 2a of the door opening 2, which faces the mounting surface 3a-1 of the door peripheral edge portion 3a. I am letting

Further, the first connecting wall 13 is attached to the door weatherstrip 10 at a portion corresponding to at least the side sill section and the lock side of the peripheral edge 2 a of the door opening 2 .

The mounting base 11 is a portion that abuts and is fixed to the mounting surface 3a-1 of the door peripheral portion 3a of the automobile 1. As shown in FIG. A surface of the mounting base 11 that contacts the mounting surface 3a-1 of the door peripheral portion 3a is formed in a substantially flat plate shape. With such a shape, there is no gap between the door peripheral portion 3a and the door weatherstrip 10, and high sealing performance and sound insulation can be achieved. At least one of the vehicle-interior end 11a and the vehicle-exterior end 11b of the mounting base 11 may be provided with a protrusion.

Clip insertion holes 11c are formed in the mounting base 11 at predetermined intervals. The door weatherstrip 10 according to the present embodiment is attached to the door peripheral portion 3a of the automobile 1 via the attachment base portion 11 by being fixed using the clip 20. As shown in FIG. The clip 20 connects and engages a clip insertion hole 11c formed in the mounting base 11 and a mounting hole (not shown) formed at a position corresponding to the clip insertion hole 11c in the door peripheral portion 3a. . As a result, the door weatherstrip 10 is fixed to the door peripheral portion 3a.

In the door peripheral edge portion 3a, the predetermined interval at which the clip insertion holes 11c are formed is preferably about 70 cm to 130 cm, for example. Within the above numerical range, the predetermined intervals may be, for example, equal intervals, or may be different intervals for each clip insertion hole 11c. With such an interval, the door weatherstrip 10 is stably attached to the door peripheral portion 3a. Moreover, the interval between the clips 20 may be changed according to the shape of the door peripheral portion 3a.

For example, in the door peripheral edge portion 3a, the curved portion may have a narrower interval than the straight portion in accordance with the shape of the curved line, although it depends on the vehicle body R shape and the like. A general object can be used for the clip 20 .

The hollow seal portion 12 is a portion integrally molded with the mounting base portion 11 by extrusion. A hollow portion 15 is formed inside the hollow seal portion 12 . As a result, when the peripheral edge 2a of the door opening 2 and the hollow seal portion 12 elastically contact each other in the process of closing the door, the hollow seal portion 12 can be flexurally deformed. Therefore, the door weather strip 10 reduces the impact when the front door 3 is closed, and seals the door peripheral edge 3a and the door opening 2's peripheral edge 2a satisfactorily.

The hollow seal portion 12 includes an elastic contact portion 12c that elastically contacts the peripheral edge 2a of the door opening 2. As shown in FIG. The elastic contact portion 12c is connected from both ends to the inner side wall 12a that is receding from the vicinity of the inner end portion 11a of the mounting base portion 11 and the outer side wall 12b that is receding from the vicinity of the outer end portion 11b of the mounting base portion 11. formed by

The elastic contact portion 12c is in elastic contact with the peripheral edge 2a of the door opening 2 and seals between the peripheral edge 2a of the door opening 2 and the front door 3. As shown in FIG. Here, the position and size of the elastic contact portion 12c in the hollow seal portion 12 differ depending on which section of the front door 3 at least a portion of the door weatherstrip 10 is positioned.

As shown in FIG. 2, for example, in the roof section (a) and the hinge section (b), half of the hollow seal portion 12 substantially on the door outer peripheral side is the elastic contact portion 12c, and the side sill section (c) and the lock section In (d), the elastic contact portion 12c is a half of the hollow seal portion 12 substantially on the outer side of the door and located on the inner side of the vehicle. Of course, the position and size of the elastic contact portion 12c in the hollow seal portion 12 are not limited to these.

The vehicle interior side wall 12a formed on the vehicle interior side of the mounting base portion 11 and the hollow seal portion 12 includes a vehicle interior connection wall 16a connected to the vehicle interior side of the door outer peripheral side surface of the mounting base portion 11, and a vehicle interior connection wall 16a connected to the vehicle interior side wall 16a. It is connected via the first connection wall 13 connected to the side surface. The first connecting wall 13 extends toward the inside of the vehicle while curving toward the door outer periphery and the door inner periphery.

By providing the first connecting wall 13, the cross-sectional circumference of the hollow seal portion 12 is extended. In the process of closing the door, due to bending deformation caused by elastic contact between the hollow seal portion 12 and the peripheral edge 2a of the door opening 2, a force pulling the mounting base 11 toward the hollow seal portion 12 (hereinafter referred to as bending tension) is generated. Thus, the vehicle-interior end portion 11a of the mounting base portion 11 is prevented from floating.

According to the above configuration, the extension of the cross-sectional circumference by the first connecting wall 13 allows the hollow seal portion 12 to bend more than the case where the first connecting wall 13 does not exist. The bending tension on 11 is reduced. Therefore, the vehicle-interior end portion 11a of the mounting base portion 11 is suppressed from floating, and the deterioration of the sealing performance and sound insulation performance of the door weatherstrip 10 is suppressed.

The rear seal lip portion 14 has a fin shape, and is formed on the vehicle interior side wall of the hollow seal portion 12 so that the tip thereof contacts the rear surface 3a-2 of the door peripheral portion 3a at least in the process of closing the door. is formed so as to protrude from the vehicle outer side surface of the door center side end. The rear seal lip portion 14 supports the hollow seal portion 12 in the process of closing the door, and the bending of the hollow seal portion 12 is suppressed. Therefore, the bending tension applied to the mounting base 11 is reduced. The tip of the rear seal lip portion 14 may directly abut on the rear surface 3a-2 of the door peripheral portion 3a, or may abut on other components attached to the door peripheral portion 3a.

Depending on the shape of the door peripheral edge portion 3a, the position where the rear seal lip portion 14 can be formed may be restricted. For example, when the door weatherstrip 10 is attached to the roof section as shown in FIG. 14 and the component 23 (glass run) attached to the door peripheral portion 3a cannot come into contact with each other.

Thus, even if the rear seal lip portion 14 must be formed on the door center side portion of the door weatherstrip 10 (near the boundary between the mounting base portion 11 and the hollow seal portion 12),
According to the structure of the door weatherstrip 10 according to this embodiment, the hollow seal portion 12 is supported by the rear seal lip portion 14 and the first connecting wall 13 is bent when the door is closed. By doing so, the bending tension applied to the mounting base 11 is reduced. Therefore, the vehicle-interior end portion 11a of the mounting base portion 11 is suppressed from floating, and the sealing performance and sound insulation performance of the door weatherstrip 10 are improved.

[Embodiment 2]
Another embodiment of the invention is described below with reference to FIG. For convenience of description, members having the same functions as those of the members described in the above embodiments are denoted by the same reference numerals, and description thereof will not be repeated. A door weatherstrip 30 according to the present embodiment differs from the door weatherstrip 10 according to the first embodiment in that a second connecting wall 17 is provided as shown in FIG.

The second connecting wall 17 is integrally molded with the hollow seal portion 12 by extrusion (the second connecting wall 17 and the hollow seal portion 12 are continuously formed). The second connecting wall 17 includes a vehicle-interior connecting wall 16a (connected to the vehicle interior side of the door outer peripheral side surface of the mounting base 11) and a vehicle-interior wall 12b formed on the vehicle exterior side of the hollow seal portion 12. It is connected to the vehicle interior side surface of the center side end portion, and is formed to extend substantially parallel to the mounting base portion 11 . Further, the second connecting wall 17 divides the hollow portion 15 into a hollow portion 15a and a hollow portion 15b.

By forming the second connecting wall 17, when the hollow seal portion 12 is in elastic contact with the peripheral edge 2a of the door opening portion 2 in the process of closing the door, the hollow seal portion 12 is located near the boundary with the mounting base portion 11. , the door weather strip 30 is restrained from being excessively crushed. That is, the second connecting wall 17 narrows the size of the hollow seal portion 12, which mainly causes bending deformation, to a range surrounding the hollow portion 15a.

In the range surrounding the hollow portion 15b, bending deformation is suppressed by the second connecting wall 17 supporting the connecting walls 16a and 16b. As a result, it is possible to suppress deterioration in sealing performance and sound insulation performance due to excessive crushing of the hollow seal portion 12 and the door weather strip 30 .

In this embodiment, it is preferable that the door center side end portion of the vehicle interior side wall 12a be located closer to the door center side than the door outer peripheral side end of the vehicle interior side wall 16a. According to the above configuration, the end of the inner side wall 12a on the door center side is located closer to the outer periphery of the door than the end of the inner side connecting wall 16a on the door outer peripheral side. The effect of extending the cross-sectional circumference of 12 increases. Therefore, the vehicle inner side end portion 11a of the mounting base portion 11 is prevented from floating.

<Modification>
This embodiment can take various forms by changing the shape of the second connecting wall 17 . A variation of such a configuration is described below with reference to FIG.

As shown in (a) of FIG. 5 , the door weatherstrip 31 according to the embodiment of the present invention includes a second connecting wall 17 a that is thinner than the hollow seal portion 12 . The thickness of the second connecting wall 17a may be, for example, 3/4 or less of the thickness of the hollow seal portion 12, or may be 1/2 or less. As the thickness of the second connecting wall 17a becomes thinner, the rigidity of the second connecting wall 17a decreases, so that the second connecting wall 17a bends more easily.

As shown in FIG. 5B, a door weatherstrip 32 according to an embodiment of the present invention has at least one first thin portion 18a which is thinner than the other portions. A second connecting wall 17b is provided. The first thin portion 18a is formed on at least one surface of the second connecting wall 17b.

The first thin portion 18a may be formed near the center of the second connecting wall 17b, or may be formed on the vehicle inner side and/or the vehicle outer side of the second connecting wall 17b. The thickness of the thinnest portion of the first thin portion 18a may be, for example, 3/4 or less of the thickness of the portion other than the first thin portion 18a of the second connecting wall 17b, or 1/2 or less. There may be. As the thickness of the first thin portions 18a decreases, and as the number of the first thin portions 18a formed increases, the rigidity of the second connecting wall 17b including the first thin portions 18a decreases. Wall 17b becomes easy to bend.

As shown in (c) of FIG. 5, the door weather strip 33 according to the embodiment of the present invention may have unevenness formed on at least one surface of the second connecting wall 17c. The door weatherstrip 33 of the present embodiment includes a second connecting wall 17c formed in, for example, a nonlinearly wavy shape (bellows shape).

In addition, the second connecting wall 17c may be formed in a non-linear shape, such as a substantially S shape or a substantially arc shape. With such a shape, the cross-sectional length of the second connecting wall 17c is extended, and the rigidity of the second connecting wall 17c is reduced, so that the second connecting wall 17c is easily bent.

According to the shapes of the second connecting walls 17a, 17b, and 17c, since the second connecting wall 17 has a shape that is easy to bend, the rigidity of the second connecting wall 17 decreases, and accordingly, the second connecting wall 17 flexibility increases. Therefore, in the process of closing the door, the second connecting wall 17 suppresses the crushing of the door weatherstrips 31, 32, and 33, and the second connecting wall 17, which is excellent in flexibility, bends, so that the hollow seal portion Transmission of the bending tension due to the bending of the base 12 to the mounting base 11 is suppressed.

Therefore, the vehicle inner side end portion 11a of the mounting base portion 11 is prevented from floating. In addition, the shape of the second connecting wall 17 in the present embodiment is not limited to the shapes of the second connecting walls 17a, 17b, and 17c as long as the shape increases the flexibility of the second connecting wall 17. .

[Embodiment 3]
Another embodiment of the invention is described below with reference to FIG. For convenience of description, members having the same functions as those of the members described in the above embodiments are denoted by the same reference numerals, and description thereof will not be repeated.

The door weatherstrip 34 according to the present embodiment differs from the door weatherstrip 10 according to the first embodiment in that the second connecting wall 17 is provided and the second thin portion 18b is provided in the vehicle-interior connecting wall 16a.

The second thin portion 18b is formed on the outer surface and/or the inner surface of the vehicle-interior connecting wall 16a. The second thin portion 18b may be formed near the center of the vehicle-interior connecting wall 16a, or may be formed on the mounting base 11 side and/or the hollow seal portion 12 side of the vehicle-interior connecting wall 16a.

The thickness of the thinnest portion of the second thin portion 18b may be, for example, 3/4 or less, or 1/2 or less of the thickness of the portion of the vehicle-interior connecting wall 16a other than the second thin portion 18b. may be As the thickness of the second thin portions 18b becomes thinner and the number of the second thin portions 18b formed increases, the rigidity of the vehicle-interior connecting wall 16a including the second thin-wall portions 18b decreases. The wall 16a becomes easy to bend.

According to the second thin portion 18b, the rigidity of the vehicle-interior connection wall 16a is reduced, and accordingly the flexibility of the vehicle-interior connection wall 16a is increased. Therefore, in the process of closing the door, the flexible inner connecting wall 16 a bends, thereby suppressing the transmission of the bending tension due to the bending of the hollow seal portion 12 to the mounting base 11 . Therefore, the vehicle inner side end portion 11a of the mounting base portion 11 is prevented from floating.

In addition, according to such a configuration, since the rigidity of the second connecting wall 17 does not decrease, while maintaining the effect of suppressing the crushing of the door weatherstrip 34 by the second connecting wall 17, the vehicle inner end of the mounting base 11 The effect of suppressing floating of 11a is obtained.

Note that the shape of the vehicle-interior connecting wall 16a in the present embodiment is not limited to the shape having the second thin portion 18b, as long as it is a shape that increases the flexibility of the vehicle-interior connecting wall 16a. Further, the door weatherstrip 34 may be formed in a shape that increases the flexibility of both the second connecting wall 17 and the above (for example, a shape that includes both the first thin portion 18a and the second thin portion 18b). .

[Float at the inner end of the mounting base]
For the door weatherstrip according to the embodiment of the present invention, the floating amount of the vehicle inner side end portion 11a of the mounting base portion 11 when the door is closed was measured. A state in which the door weatherstrips 10, 30, 34 according to one embodiment of the present invention and the door weatherstrip 40 for comparison are attached to the lock section of the front door 3 is reproduced using cross-sectional models. A door weatherstrip 40 to be compared differs from the door weatherstrip 10 according to the first embodiment in that the first connection wall 13 and the second connection wall 17 are not provided.

The door weatherstrip attached to the door peripheral portion 3a and the peripheral edge 2a of the door opening 2 were brought into elastic contact, and the floating amount w of the vehicle interior end portion 11a of the mounting base portion 11 was measured. FIG. 7(a) shows the floating amount w1 in the door weatherstrip 40 for comparison. FIG. 7(b) shows the floating amount w2 in the door weatherstrip 10 according to one embodiment of the present invention. FIG. 7(c) shows the floating amount w3 in the door weatherstrip 30 according to one embodiment of the present invention. (d) of FIG. 7 shows the floating amount w4 in the door weatherstrip 34 according to one embodiment of the present invention.

As a result of measuring the floating amount w under each condition, the floating amount w1 was 0.7 mm, the floating amount w2 was 0 mm, the floating amount w3 was 0.35 mm, and the floating amount w4 was 0.3 mm. From these results, the door weatherstrips according to the embodiments of the present invention all had a lower floating amount w than the door weatherstrip 40 without the first connecting wall 13, which is a comparative object. That is, the door weatherstrip according to one embodiment of the present invention is provided with the first connecting wall 13 to suppress the floating of the vehicle inner side end portion 11a of the mounting base portion 11, so that the sealing performance and the sound insulation performance are improved. proved to be excellent.

〔summary〕
A door weatherstrip according to aspect 1 of the present invention comprises a mounting base attached along the periphery of an automobile door, and a hollow seal portion elastically contacting the periphery of the door opening of the automobile body in the process of closing the door. and, the mounting base and the vehicle-exterior wall formed on the vehicle exterior of the hollow seal portion are connected via a vehicle-exterior connection wall connected to the vehicle exterior of the door outer peripheral side surface of the mounting base. A door weatherstrip including a back seal lip portion projecting toward the outside of the vehicle from the vehicle outside surface of the door center side end portion of the vehicle outside wall, and having a tip portion in elastic contact with the back surface of the peripheral edge portion. , the mounting base portion and the vehicle interior side wall formed on the vehicle interior side of the hollow seal portion include a vehicle interior connection wall connected to the vehicle interior side of the door outer peripheral side surface of the mounting base portion, and a vehicle interior connection wall of the vehicle interior connection wall. The first connection wall is connected to the side surface of the door, and the first connection wall is curved toward the outer periphery of the door and the center of the door, and extends toward the inside of the vehicle. Both the connecting wall and the rear seal lip portion are positioned closer to the center of the door than the first surface of the peripheral edge of the door opening facing the mounting surface of the peripheral edge portion, and the door weather strip includes: It is configured to be attached at least to portions corresponding to the side sill side and the lock side of the periphery of the door opening.

According to the above configuration, the mounting base portion and the vehicle interior side wall formed on the vehicle interior side of the hollow seal portion are connected via the vehicle interior connection wall and the first connection wall. Therefore, in the process of closing the door, the deflection of the hollow seal portion is absorbed by the first connecting wall, and transmission of the deflection of the hollow seal portion to the mounting base is suppressed. Therefore, the floating of the vehicle inner side end of the mounting base is suppressed. Therefore, it is possible to suppress the deterioration of the sealing performance and the sound insulation performance due to the floating of the vehicle-interior end portion of the mounting base portion.

A door weatherstrip according to aspect 2 of the present invention may include a second connecting wall that connects the vehicle outer side surface of the vehicle inner connecting wall at the door outer peripheral side end and the vehicle inner side surface of the vehicle outer side wall at the door center side end. good. According to the above configuration, by providing the second connecting wall, it is possible to suppress deterioration in sealing performance and sound insulation performance due to excessive crushing of the door weatherstrip in the process of closing the door.

In the door weatherstrip according to aspect 3 of the present invention, it is preferable that the door center side end portion of the vehicle interior side wall is located closer to the door center side than the door outer periphery side end of the vehicle interior side connecting wall. According to the above configuration, compared to the case where the door center side end portion of the vehicle interior side wall is positioned closer to the door outer periphery side than the door outer periphery side end of the vehicle interior side connection wall, the first connection wall is positioned closer to the cross-sectional circumference of the hollow seal portion. Increased lengthening effect. Therefore, the floating of the vehicle inner side end of the mounting base is further suppressed.

In the door weatherstrip according to aspect 4 of the present invention, the thickness of the second connecting wall may be thinner than the thickness of the hollow seal portion. According to the above configuration, since the second connecting wall is formed thin, the second connecting wall can suppress the crushing of the door weatherstrip and absorb the bending of the hollow seal portion in the process of closing the door. can.

In the door weatherstrip according to aspect 5 of the present invention, the second connecting wall may be provided with a first thin portion having a thickness thinner than that of other portions. According to the above configuration, the first thin portion is formed in the second connecting wall, so that the second connecting wall suppresses the crushing of the door weatherstrip and the bending of the hollow seal portion in the process of closing the door. It can be absorbed by the second connecting wall.

In the door weather strip according to aspect 6 of the present invention, unevenness may be formed on at least one surface of the second connecting wall. According to the above configuration, the peripheral length of the second connecting wall is extended. Therefore, in the process of closing the door, the second connecting wall can suppress the crushing of the door weatherstrip and absorb the bending of the hollow seal portion by the second connecting wall.

In the door weatherstrip according to aspect 7 of the present invention, the vehicle-interior connecting wall may be provided with a second thin portion having a thickness smaller than that of other portions. According to the above configuration, since the second thin-walled portion is formed on the vehicle-interior connecting wall, the bending of the hollow seal portion can be absorbed by the second connecting wall on the vehicle-interior side.

[Additional notes]
The present invention is not limited to the above-described embodiments, but can be modified in various ways within the scope of the claims, and can be obtained by appropriately combining technical means disclosed in different embodiments. is also included in the technical scope of the present invention. Furthermore, new technical features can be formed by combining the technical means disclosed in each embodiment.

REFERENCE SIGNS LIST 1 automobile 2 door opening 2a peripheral edge 3a door peripheral edge (peripheral edge)
Reference Signs List 10, 30, 31, 32, 33, 34 Door weather strip 11 Mounting base 11a Inner end 11b Outer end 12 Hollow seal portion 12a Inner side wall 12b Outer side wall 12c Elastic contact portion 13 First connecting wall 14 Rear seal Lip portion 16a Inner connecting wall 16b Outer connecting wall 17, 17a, 17b, 17c Second connecting wall 18a First thin portion 18b Second thin portion

Claims (7)

a mounting base mounted along the perimeter of a vehicle door;
a hollow seal portion elastically contacting the periphery of the door opening in the body of the automobile in the process of closing the door;
The mounting base and a vehicle-exterior wall formed on the vehicle exterior side of the hollow seal portion are connected via a vehicle-exterior connection wall that is connected to the vehicle exterior of the door outer peripheral side surface of the mounting base,
A door weatherstrip including a rear seal lip portion projecting toward the vehicle outside from the vehicle outside surface of the door center side end portion of the vehicle outside wall and having a tip portion in elastic contact with the rear surface of the peripheral edge portion,
The mounting base portion and the vehicle interior side wall formed on the vehicle interior side of the hollow seal portion are composed of a vehicle interior connection wall connected to the vehicle interior side of the door outer peripheral side surface of the mounting base portion, and a door outer peripheral side surface of the vehicle interior connection wall. is connected via a first connection wall connected to
The first connecting wall extends toward the interior of the vehicle while curving toward the outer periphery of the door and toward the center of the door,
Both the first connecting wall and the rear seal lip portion are located closer to the center of the door than the first surface of the peripheral edge of the door opening facing the mounting surface of the peripheral edge portion. The strip is attached at least to a portion corresponding to the side sill side and the lock side of the periphery of the door opening ,
A door weatherstrip , wherein the vehicle interior side wall rises from a connection point with the first connection wall so as to be inclined toward the vehicle exterior side wall with respect to a vertical direction with respect to the mounting base . 2. The door weatherer according to claim 1, further comprising a second connecting wall that connects the outer side surface of the inner connecting wall at the outer edge of the door and the inner side surface of the outer side wall at the center side of the door. strip. 3. The door weatherstripping according to claim 2, wherein the door center side end portion of the vehicle interior side wall is located closer to the door center side than the door outer peripheral side end of the vehicle interior side connecting wall. 4. A door weatherstrip according to claim 2, wherein the wall thickness of the second connecting wall is thinner than the wall thickness of the hollow seal portion. 5. The second connecting wall according to any one of claims 2 to 4, wherein the second connecting wall is provided with a first thin portion having a thickness smaller than that of other portions. door weatherstripping. 6. The door weatherstrip according to any one of claims 2 to 5, wherein at least one surface of the second connecting wall is uneven. 7. The vehicle-interior connecting wall according to any one of claims 2 to 6, wherein a second thin-walled portion having a thickness smaller than that of other portions is provided on the vehicle-interior connecting wall. door weatherstrip.

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