JP2003175729A - Opening portion sealing structure in vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an opening portion sealing structure in a vehicle, capable of improving feeling when a door is closed, and preventing degradation in sealing performance. <P>SOLUTION: A weather strip 20 has an annular shape as a whole, and comprises a base portion 23 and a hollow seal portion 24. A part corresponding to a corner portion of a center pillar portion side upper portion of a door sash portion 12a in a front door is made to be a molded portion, and the other part is made to an extruded portion. On an opening edge portion 18 of a vehicular body, a projecting portion 30 is provided along at least a part of an edge portion. The seal portion 24 is composed of a seal wall 41 curving and bulging so as to oppose to the projecting portion 30, and a pair of coupling walls 42, 43 coupling both ends in a width direction of the seal wall 41 and the base portion 23. A coupling portion between the seal wall 41 and the pair of the coupling walls 42, 43 is prevented from contacting with the opening edge portion 18 at all times. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sealing structure for an opening portion of a vehicle, which seals between a vehicle body and the door by using a weather strip attached to a peripheral portion of a door of the vehicle. It is a thing.

[0002]

2. Description of the Related Art Conventionally, in this type of seal structure,
A door weather strip is used which is attached to the periphery of a front door or a rear door of a vehicle and seals between the door and the vehicle body. Examples of the door weather strip attached to the door include those shown in FIGS.

As shown in FIG. 7, a door weather strip 70 (a front door weather strip is illustrated in the figure) has a plurality of (three in this example) extruded portions 71 extending in a substantially straight line. 72 and 73 are provided. Further, the end edges of each of the extrusion-molded portions 71 to 73 are connected to each other by a plurality of (three in this example) die-molded portions 74.

Further, as shown in FIGS. 8 (a) to 8 (c),
The door weather strip 70 has each extruded portion 71.
To 73, the base portion 75 and the hollow seal portion 76.
And a back seal 77 protruding outward from the seal portion 76 in common. Although not shown, in each of the mold forming portions 74, the base portion 75 and the seal portion 76 of the extrusion forming portions 71 to 73 connected thereto are also included.
And a back seal 77, each of which has a base portion, a seal portion, and a back seal which are continuous with each other.

Such a door weather strip 70 is
When the door is changed from the open state to the closed state, the seal portion 76 elastically deforms in a state of being in contact with the opening edge portion 80 of the vehicle body. In this way, the inside of the vehicle and the outside of the vehicle are sealed via the door weather strip 70 between the vehicle body and the door.

[0006]

However, in the above-mentioned conventional door weather strip described above, when the seal portion 76 and the opening edge portion 80 are brought into contact with each other to close the door, the seal portion 76 is, for example, as shown in FIG. As indicated by a broken line in the drawing, there is a possibility that the entire body will be elastically deformed while tilting in one direction with respect to the center line D (offset).

If the entire seal portion 76 is deformed in this way, the resistance when closing the door increases.
Further, as described above, if the entire seal portion 76 is deformed while tilting in one direction, sliding friction occurs at the contact portion between the seal portion 76 and the opening edge portion 80, and the resistance when closing the door further increases. There is a risk that

In such a case, there is a problem that the door closing force at the time of closing the door becomes high and the feeling at the time of closing the door is deteriorated. Further, in the pressure contact state when they are brought into contact with each other, since the side wall portion of the hollow seal portion 76 and the opening edge portion 80 are in planar contact with each other, the sealing performance may be deteriorated due to a settling or the like. .

Not only the case of the front door,
Even in the case of the rear door, this situation is generally the same.

The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a vehicle capable of preventing the deterioration of the sealing property while improving the feeling when closing the door. It is to provide a seal structure for an opening.

[0011]

Means for Solving the Problems and Effects of the Invention Each means suitable for solving the above-mentioned object will be described below item by item. It should be noted that operational effects and the like peculiar to the corresponding means are additionally described as needed.

Means 1. A weather having a base portion mounted on a peripheral portion of a vehicle door, and a hollow seal portion integrally formed with the base portion and elastically abutting against an opening edge portion of the vehicle body when the door is closed. A strip is a sealing structure for an opening in a vehicle that seals between the vehicle body and the door using a strip, wherein the opening edge has a convex portion along at least a part of the edge. Provided, of the seal portion, at least a portion corresponding to the convex portion, a seal wall that bulges in a curved shape so as to face the convex portion,
It is configured by a pair of connecting walls that connect both ends in the width direction of the seal wall and the base, and a connecting portion of the seal wall and the pair of connecting walls is always in non-contact with the opening edge portion. A seal structure for an opening in a vehicle characterized by the above.

According to the means 1, the weather strip seals between the vehicle body and the door. In addition, the seal portion bulges in a curved shape so as to face the convex portion provided along at least a part of the opening edge portion, both ends in the width direction of the seal wall, and the base portion. It is constituted by a pair of connecting walls for connecting and. And
When the door is closed, the connecting portion between the seal wall and the pair of connecting walls is out of contact with the opening edge. Therefore, the seal wall is mainly elastically deformed so as to follow the shape of the tip of the convex portion without being greatly deformed. Therefore, it is unlikely that the entire seal portion is deformed or is deformed to one side, and moreover, sliding frictional force is less likely to occur between the seal portion and the opening edge portion. As a result, the door closing force when closing the door can be suppressed, and the feeling at that time can be improved. Moreover, since the seal wall is elastically deformed so as to follow the shape of the tip of the convex portion, deterioration of sealing performance due to settling or the like is prevented.

Means 2. A weather having a base portion mounted on a peripheral portion of a vehicle door, and a hollow seal portion integrally formed with the base portion and elastically abutting against an opening edge portion of the vehicle body when the door is closed. A sealing structure for an opening in a vehicle for sealing between the vehicle body and the door by using a strip, wherein at least a part of the weather strip is continuously formed by an extrusion method. It is composed of a molding portion, the opening edge portion is provided with a convex portion along the at least part of the edge portion, at least the convex portion of the sealing portion of the extrusion molding portion. The corresponding portion is constituted by a seal wall that bulges in a curved shape so as to face the convex portion, and a pair of connecting walls that connects both ends in the width direction of the seal wall and the base portion. And the pair of connecting walls Seal structure for opening coupling parts in the vehicle, characterized in that as the non-contact always with respect to the opening edge of the.

According to the means 2, in the seal portion of the extrusion-molded portion, at least a portion corresponding to the convex portion bulges in a curved shape so as to face the convex portion, and the seal wall It is configured by a pair of connecting walls that connect both ends in the width direction and the base. Then, when the door is closed, the connecting portion between the seal wall and the pair of connecting walls is not in contact with the opening edge portion. Therefore, the seal wall is mainly elastically deformed so as to follow the shape of the tip of the convex portion without being greatly deformed. Therefore, it is unlikely that the entire seal portion is deformed or is deformed to one side, and moreover, sliding frictional force is less likely to occur between the seal portion and the opening edge portion. As a result, the door closing force when closing the door can be suppressed, and the feeling at that time can be improved. Moreover, since the seal wall is elastically deformed so as to follow the shape of the tip of the convex portion, deterioration of sealing performance due to settling or the like is prevented.

Means 3. A weather having a base portion mounted on a peripheral portion of a vehicle door, and a hollow seal portion integrally formed with the base portion and elastically abutting against an opening edge portion of the vehicle body when the door is closed. A seal structure for an opening in a vehicle for sealing between the vehicle body and the door by using a strip, wherein the weather strip has a portion corresponding to one corner of the door by a molding method. It consists of a molded part molded, and the other part consists of an extruded part continuously molded by an extrusion molding method,
The opening edge portion is provided with a convex portion along at least a part of the edge portion thereof, and at least the portion of the seal portion of the extrusion-molded portion that corresponds to the convex portion is the convex portion. A seal wall that bulges in a curved shape so as to face each other, and a pair of connecting walls that connect the widthwise ends of the seal wall and the base, and the seal wall and the pair of connecting walls A sealing structure for an opening in a vehicle, wherein the connecting portion is always in non-contact with the opening edge.

According to the means 3, in the weather strip, the portion corresponding to one corner of the door is formed by the molding method, and the other portions are continuously formed by the extrusion method. It consists of a molded extrusion part. Therefore, the area of the mold forming portion where the thickness of the seal portion tends to be relatively thick can be reduced, and thus the resistance when closing the door can be reduced as a whole. In addition, the seal portion is a seal wall that bulges in a curved shape so as to face a convex portion provided along at least a part of the opening edge portion, and both ends in the width direction of the seal wall and the base portion. It is constituted by a pair of connecting walls for connecting and. Then, when the door is closed, the connecting portion between the seal wall and the pair of connecting walls is not in contact with the opening edge portion. Therefore, the seal wall is mainly elastically deformed so as to follow the shape of the tip of the convex portion without being greatly deformed. Therefore, it is unlikely that the entire seal portion is deformed or is deformed to one side, and moreover, sliding frictional force is less likely to occur between the seal portion and the opening edge portion.
As a result, the door closing force when closing the door can be suppressed, and the feeling at that time can be improved. Moreover, since the seal wall is elastically deformed so as to follow the shape of the tip of the convex portion, deterioration of sealing performance due to settling or the like is prevented.

Means 4. A base portion mounted on a peripheral portion of a front door or a rear door of a vehicle, and a hollow seal portion integrally formed on the base portion and elastically abutting on an opening edge portion of a vehicle body when the front door or the rear door is closed. A sealing structure of an opening in a vehicle for sealing between the vehicle body and the front door or the rear door by using a weather strip provided with, wherein the weather strip is the front door or the rear door. The part corresponding to the upper corner of the center pillar, which forms part of the opening edge of the vehicle body, consists of the molding part molded by the molding method, and the other parts are continuously molded by the extrusion molding method. And a protrusion is provided on the opening edge along at least a part of the edge, and the protrusion of the extrusion Of the seal portion, at least a portion corresponding to the convex portion, bulges in a curved shape so as to face the convex portion, and a pair of widthwise both ends of the seal wall and the base portion. A seal structure for an opening in a vehicle, comprising a connecting wall, and a connecting portion between the sealing wall and the pair of connecting walls is always in non-contact with the opening edge.

According to the means 4, in the weather strip, the portion corresponding to the corner on the upper side of the center pillar portion is the molding portion, and the other portion is the extrusion molding portion. For this reason, the area of the mold forming portion where the thickness of the seal portion tends to be relatively thick can be reduced, and thus the resistance when closing the front door or the rear door can be reduced as a whole. In addition, the seal portion bulges in a curved shape so as to face the convex portion provided along at least a part of the opening edge portion, both ends in the width direction of the seal wall, and the base portion. It is constituted by a pair of connecting walls for connecting and.
Then, when the front door or the rear door is closed, the connecting portion between the seal wall and the pair of connecting walls is not in contact with the opening edge portion. Therefore, the seal wall is mainly elastically deformed so as to follow the shape of the tip of the convex portion without being greatly deformed. Therefore, it is unlikely that the entire seal portion is deformed or is deformed to one side, and moreover, sliding frictional force is less likely to occur between the seal portion and the opening edge portion. As a result, the door closing force when closing the door can be suppressed, and the feeling at that time can be improved. Moreover, since the seal wall is elastically deformed so as to follow the shape of the tip of the convex portion, deterioration of sealing performance due to settling or the like is prevented.

Means 5. 5. The seal structure for an opening in a vehicle according to means 3 or 4, wherein the cross-sectional shapes of one end and the other end of the extruded part are the same or substantially the same.

According to the means 5, since the cross-sectional shapes of the one end and the other end of the extrusion molding part are the same or substantially the same, it is possible to prevent the mold structure used when molding the molding part from being complicated. Further, in extrusion molding, for example, when a portion corresponding to the right side door and a portion corresponding to the left side door are continuously formed, and there is a change in the extrusion amount in the longitudinal direction. In the case of variable extrusion molding, there is almost no change in the extrusion amount at the boundary portion between the right side and the left side. Therefore, accurate extrusion molding can be performed relatively easily.

Means 6. 6. The seal structure for an opening in a vehicle according to any one of means 1 to 5, wherein the distance between the pair of connecting walls is wider on the seal wall side than on the base side.

According to the means 6, the distance between the pair of connecting walls is
The seal wall side is wider than the base side. In other words, the cross-sectional shape of the seal portion is substantially fan-shaped. For this reason, the deformation of the seal wall that bulges in a curved shape so as to face the convex portion is more reliably prioritized, and the above-described operational effects are more reliably exhibited.

Means 7. The convex portion has a first surface and the first surface.
A second surface that intersects with the surface of one of the pair of connecting walls, one connecting wall extending substantially parallel to the first surface, and the other connecting wall extending substantially parallel to the second surface. 7. The seal structure for an opening in a vehicle according to any one of means 1 to 6, wherein the seal structure is formed as described above.

According to the means 7, since each connecting wall extends substantially parallel to the first surface and the second surface forming the convex portion,
The connecting wall becomes more difficult to bend. Therefore, the deformation of the seal wall is given a higher priority, and the above-described effects can be obtained more reliably.

Means 8. Means 1 to 7 characterized in that the length of each connecting wall is greater than the thickness of the sealing wall
A seal structure for an opening in a vehicle according to any one of 1.

According to the means 8, the length of each connecting wall is larger than the thickness of the sealing wall. Therefore, the elastic deformation of the seal wall can be prioritized more easily, and a sufficient amount of deformation of the seal wall can be secured. Therefore, even if there is a difference in the degree of protrusion of the convex portion, the door closing force is unlikely to vary.

Means 9. The seal structure for an opening in a vehicle according to any one of means 1 to 8, characterized in that, in the closed state of the door, the top of the convex portion is located substantially in the center of the seal wall. .

According to the means 9, when the door is in the closed state, the top of the convex portion is located substantially in the center of the seal wall, so that the deformation of the seal wall is less likely to be biased and the deterioration of the sealing performance is more reliable. Can be suppressed.

Means 10. Among the connecting walls, the rigidity of one of the connecting walls extending in the direction close to the closing direction of the door,
10. The seal structure for an opening in a vehicle according to any one of means 1 to 9, wherein the rigidity is higher than the rigidity of the other connecting wall.

According to the means 10, among the connecting walls, the rigidity of the connecting wall extending in the direction close to the closing direction of the door is
Since the rigidity is higher than that of the other connecting wall, even if the stress applied from the sealing wall to each connecting wall when closing the door is different between the connecting walls, the rigidity of the strongly stressed one is increased. Therefore, it is possible to suppress a defect due to excessive deformation of the connecting wall.

Means 11. Means 1 to 10 characterized in that the rigidity of the seal wall portion near the connecting wall extending in the direction close to the closing direction of the door is made higher than the rigidity of the seal wall portion near the other connecting wall. A seal structure for an opening in a vehicle according to any one of 1.

According to the means 11, the rigidity of the seal wall portion near the connecting wall extending in the direction close to the closing direction of the door is higher than the rigidity of the seal wall portion near the other connecting wall. Even if the stress applied to the seal wall and each connecting wall when closing is different in the width direction of the seal wall,
Since the rigidity of the one to which a strong stress is applied is increased, it is possible to suppress a defect due to excessive deformation of the connecting wall or the like.

Means 12. 12. The seal structure for an opening in a vehicle according to any one of means 1 to 11, wherein the convex portion is integrally formed with a panel forming the vehicle body.

According to the means 12, it is not necessary to separately attach a convex portion, and it is possible to suppress an increase in the number of operations and cost.

Means 13. 13. The seal structure for an opening in a vehicle according to any one of means 1 to 12, characterized in that the convex portion is provided along all or substantially all of the opening edges. .

According to the means 13, the convex portion is provided along all or almost all of the opening edge portions, so that the closing force at the time of closing the door can be equalized. Therefore, the feeling can be further improved.

[0038]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment in which a seal structure is embodied will be described below with reference to the drawings. The seal structure according to the present embodiment is characterized by the cross-sectional shape of the extrusion molding portion of the weather strip. Below, one mold forming part,
A seal structure using a front door weather strip composed of one extrusion-molded portion will be described as an example.

FIG. 2 is a front view of the front door weather strip mounted on the front door, and FIGS.
(A) and (b) are JJ line and KK of FIG. 2, respectively.
It is an expanded sectional view in a line and a LL line.

As shown in FIG. 1, a vehicle body 11 of a vehicle 10 employing this seal structure has a pair of front doors 12 on the front side and a pair of rear doors 13 on the rear side (see FIG. 1). In both cases, only the door on the left side is shown) so that it can be opened and closed. The vehicle body 11 is formed with a front door opening 14 at a position corresponding to the front door 12 and a rear door opening 15 at a position corresponding to the rear door 13.
A center pillar portion 16 that forms a part of the opening edge portion is formed between them.

As shown in FIGS. 1 and 3, the front door 12
Includes a door body portion 12a, the door sash portion 12b, and the like. Further, a front door weather strip (hereinafter simply referred to as “weather strip”) 20 as a weather strip is attached to the front door 12 at a peripheral portion on the inside of the vehicle through a double-sided adhesive tape or clip not shown. ing. Then, when the front door 12 is moved from the open state (the state shown in FIG. 1) to the closed state to close the front door opening 14, the hollow seal portion 24 of the door weather strip 20 described later is opened. The opening edge portion 18 of the front door opening portion 14 is elastically abutted. As a result, the inside and outside of the vehicle 10 are sealed with the front door 12 closed.

The weather strip 20 is, for example,
It is formed of an elastic material such as ethylene-propylene-diene copolymer (EPDM). Then, as shown in FIG. 2, the weather strip 20 is formed in an annular shape as a whole, and includes one mold forming portion 21 formed in a substantially L shape by a mold forming method and the other portion. And an extrusion molding part 22 continuously formed by a variable extrusion molding method using a variable die. Here, the mold forming portion 21 is formed so as to correspond to a rear upper portion of the door sash portion 12b, that is, a corner portion on the center pillar portion 16 side upper portion.

As shown in FIGS. 3, 4 (a) and 4 (b),
The extrusion molding portion 22 basically includes a base portion 23 mounted on the peripheral portion of the front door 12 and a hollow seal portion 24 formed integrally with the base portion 23. Also,
Although not shown in the figure, the extrusion molding unit 2 is also included in the die molding unit 21.
The second base portion 23 and the seal portion 24 have a base portion and a seal portion which are formed so as to be continuous with each other. That is, the weather strip 20 has a base portion and a seal portion as basic constituent elements, and is formed to have a cross-sectional shape including a base portion 23 and a seal portion 24 that are substantially the same over the entire circumference. .

In the extrusion molding portion 22 of the weather strip 20, a hollow portion 25 is formed in the base portion 23. Further, a seal lip 26 is formed so as to project from the base portion 23 so as to close a gap between the front door 12 and the vehicle body 11. The seal lip 26 is formed so that its length (projection amount) gradually changes depending on the part.

Now, in the present embodiment, the opening edge portion 1
The convex portion 30 is formed along the edge portion of No. 8. The convex portion 30 has a first surface 31 and a second surface 32, and a top portion 33 where the both 31 and 32 are substantially orthogonal to each other, and is integrally formed by a panel constituting the vehicle body 11. There is.

On the other hand, the seal portion 24 faces the convex portion 30 when the front door 12 is closed. The seal portion 24 is configured by a seal wall 41 that bulges in a curved shape so as to face the convex portion 30, and a pair of connecting walls 42 and 43 that connect both widthwise ends of the seal wall 41 and the base portion 23. Has been done. The gap between the pair of connecting walls 42 and 43 is set so that the seal wall 41 is located more
It becomes wider toward the side. In other words, the cross-sectional shape of the seal portion 24 is substantially fan-shaped, and in the present embodiment,
One connecting wall 42 is formed to extend substantially parallel to the first surface 31 of the convex portion 30, and the other connecting wall 43 is formed to extend substantially parallel to the second surface 32. In addition, each connecting wall 42, 43
The length (or each distance between the base portion 23 and both ends of the seal wall 41) is larger than the thickness of the seal wall 41.

When the front door 12 is in the closed state, the top 33 of the protrusion 30 is located substantially at the center of the seal wall 41, and the seal wall 41
The connecting portion between the pair of connecting walls 42 and 43 is the opening edge portion 1
8 (including the convex portion 30) is always in non-contact.

Next, the procedure for manufacturing the weather strip 20 will be briefly described. It should be noted that devices and the like used for such manufacturing are not shown here.

First, an elastic material having the cross-sectional shape of the extrusion molding portion 22 is extruded from a die having a predetermined opening using an extrusion molding machine. At this time, the variable extrusion mechanism imparts various cross-sectional shapes having the above-described characteristics to the extrusion molding portion 22. After that, the die forming unit 21 is formed by using a die device so as to connect both ends of the extrusion forming unit 22. As a result, the weather strip 20 having the above structure is obtained.

Next, the function and effect of this embodiment will be described.

The weather strip 20 of this embodiment is
The part corresponding to the corner on the upper side of the center pillar part 16 is the mold forming part 21, and the other part is the extrusion forming part 22.
Consists of. For this reason, since the area of the mold forming portion 21 where the thickness of the seal portion tends to be relatively thick can be reduced,
The resistance when closing the front door 12 can be reduced as a whole.

Further, the seal portion 24 according to the present embodiment.
However, the convex portion 30 provided along the opening edge portion 18
Seal wall 41 that bulges in a curved shape so as to face the
And a pair of connecting walls 42 and 43 connecting both ends in the width direction of the seal wall 41 and the base portion 23. Then, as shown in FIG. 5, when the front door 12 is closed, the top 33 of the convex portion 30 is located substantially in the center of the seal wall 41, and the seal wall 41 and the pair of connecting walls 4 are provided.
The connecting portion with 2, 43 is not in contact with the opening edge portion 18 (the convex portion 30). Therefore, the seal walls 41 are mainly elastically deformed so as to follow the tip shape of the convex portion 30 without deforming the connecting walls 42 and 43 so much. Moreover, the entire seal portion 41 is unlikely to be deformed, and the elastic deformation of the seal wall 41 is unlikely to be biased. From these things, the seal part 4
Sliding frictional force is less likely to occur between 1 and the convex portion 30. As a result, the door closing force when closing the front door 12 can be suppressed, and the feeling can be improved.

Further, the distance between the pair of connecting walls 42 and 43 is wider toward the seal wall 41 side. Moreover, each of the connecting walls 42 and 43 extends substantially parallel to the first surface 31 and the second surface 32 forming the convex portion 30, respectively. For these reasons, the connecting walls 42 and 43 are more difficult to bend.
That is, the deformation of the seal wall 41 that bulges in a curved shape so as to face the convex portion 30 is given priority more reliably, and the above-described operational effects are more reliably exhibited.

In addition, since the length of each connecting wall 42, 43 is larger than the thickness of the seal wall 41, the elastic deformation of the seal wall 41 is more likely to be prioritized and the seal wall 4
It is possible to secure a sufficient deformation amount of 1. Therefore, even if the protrusion degree of the convex portion 30 varies depending on the region, the door closing force is unlikely to vary.

It should be noted that the present invention is not limited to the contents described in the above embodiment, but may be carried out as follows.

(A) In the above embodiment, the front door weather strip 20 provided between the vehicle body and the front door is used to seal the inside and outside of the vehicle. It can also be embodied in the case where the inside and outside of the vehicle are sealed using a rear door weather strip provided between the rear door and the rear door.

(B) Although not particularly mentioned in the above embodiment, the closing direction of the door may be different from the facing direction of the seal portion and the convex portion. For example, as shown in FIG. 6, when the door is closed in the direction of the arrow in the figure (upward in the figure), the direction in which the seal portion 24 faces the convex portion 30 is diagonally right upward in the figure. In such a case, it is conceivable that the stresses applied from the seal wall 41 to the connecting walls 42 and 43 when the door is closed are different. In such a case, as shown in the same figure, the connecting wall 43 of the one to which the strong stress is applied (the one closer to the door closing direction) is formed into a curved shape so that the rigidity of the other connecting wall 42 is increased. It may be higher than. Further, the seal wall 41 portion near the connecting wall 43 on which the stress is strongly applied may be made thicker than the seal wall 41 portion near the other connecting wall 42 to enhance the rigidity thereof. By doing so, it is possible to suppress problems due to excessive deformation of the connection wall 43 on which the stress is strongly applied and the seal wall 41 portion in the vicinity thereof.

(C) Although EPDM is illustrated as a material for forming the weather strip 20, other rubber materials such as IR (isoprene rubber) and CR (chloroprene rubber) may be used. Further, it may be made of olefinic thermoplastic elastomer (TPO) or other elastic material having rubber-like elasticity such as soft polyvinyl chloride.

(D) The convex portion 30 may be provided only along a part of the opening edge portion 18, or may be provided over all or almost all of the opening edge portion 18. In the latter case, the closing force for closing the door can be equalized, and the feeling can be further improved.

(E) In the above embodiment, the weather strip 20 is formed into a single mold forming portion 21 formed in a substantially L shape.
Although it is embodied in the case where it is composed of the other extruding parts 22 and the other extruding parts 22, the weather strip may be composed of a plurality of extruding parts and a plurality of mold forming parts connecting them. . In short, at least the portion of the seal portion (particularly the extrusion molded portion) corresponding to the convex portion may be configured by the seal wall and the pair of connecting walls as described above.

(F) Although not particularly mentioned in the above embodiment, the cross-sectional shapes of one end and the other end of the extrusion-molded portion may be the same or substantially the same. With this configuration, it is possible to prevent the mold structure used when molding the mold molding portion from becoming complicated. Further, in extrusion molding, for example, when a portion corresponding to the right side door and a portion corresponding to the left side door are continuously formed, and there is a change in the extrusion amount in the longitudinal direction. In the case of variable extrusion molding, there is almost no change in the extrusion amount at the boundary portion between the right side and the left side. Therefore, accurate extrusion molding can be performed relatively easily.

[Brief description of drawings]

FIG. 1 is a partial perspective view of a vehicle in which a seal structure according to an embodiment is adopted.

FIG. 2 is a front view showing a front door weather strip.

FIG. 3 is a sectional view taken along line JJ of FIG.

FIG. 4A is a sectional view taken along line KK of FIG. 2, and FIG.
FIG. 3 is a sectional view taken along line LL in FIG.

FIG. 5 is a cross-sectional view for explaining the operation when the door is closed.

FIG. 6 is a cross-sectional view showing a weather strip according to another embodiment.

FIG. 7 is a front view showing a conventional weather strip.

8A is a sectional view taken along line AA of FIG. 7, and FIG.
7 is a sectional view taken along line BB in FIG. 7, and (c) is CC in FIG. 7.
It is a line sectional view.

[Explanation of symbols]

10 ... Vehicle, 11 ... Vehicle main body, 12 ... Front door, 1
3 ... Rear door, 14 ... Front door opening, 15 ... Rear door opening, 16 Center pillar part, 18 ... Opening edge part, 20 ... Front door weather strip, 21 ... Mold forming part, 22 ... Extrusion forming part, 23 ... Base part, 24 ... Seal part, 30 ... Convex part, 31 ... First surface, 32 ... Second surface, 3
3 ... Top part, 41 ... Sealing wall, 42, 43 ... Connection wall.

Continued front page    (72) Inventor Masaki Ohashi             Aichi Prefecture Kasuga-cho, Nishikasugai-gun Ochiai character Nagahata 1             Address: Toyoda Gosei Co., Ltd. F term (reference) 3D201 AA03 AA24 CA23 DA06 DA23                       DA31 DA34 DA49 EA01A                       FA01 FA04 FA06 FA14 FA15

Claims (9)

[Claims] 1. A base portion mounted on a peripheral portion of a vehicle door, and a hollow seal portion integrally formed on the base portion and elastically abutting on an opening edge portion of a vehicle body when the door is closed. A sealing structure for an opening in a vehicle that seals between the vehicle body and the door by using a weather strip provided with, wherein the opening edge portion extends along at least a part of the edge portion. Providing a convex portion, in the seal portion, at least a portion corresponding to the convex portion, a seal wall that bulges in a curved shape so as to face the convex portion, and both ends in the width direction of the seal wall. In a vehicle characterized by comprising a pair of connecting walls that connect the base portion, and a connecting portion between the seal wall and the pair of connecting walls is always in non-contact with the opening edge portion. Opening seal structure. 2. A base portion mounted on a peripheral portion of a vehicle door, and a hollow seal portion integrally formed on the base portion and elastically abutting against an opening edge portion of a vehicle body when the door is closed. A sealing structure of an opening in a vehicle for sealing between the vehicle body and the door, using a weather strip having a: wherein at least a part of the weather strip is continuously formed by an extrusion molding method. Which is formed by an extrusion-molded portion, wherein the opening edge portion is provided with a convex portion along at least a part of the edge portion, among the seal portion of the extrusion-molded portion, At least a portion corresponding to the convex portion is configured by a seal wall that bulges in a curved shape so as to face the convex portion, and a pair of connecting walls that connect both ends in the width direction of the seal wall and the base portion. Then the seal wall and front A seal structure for an opening portion of a vehicle, wherein a connecting portion between the pair of connecting walls is always in non-contact with the opening edge portion. 3. A base portion mounted on a peripheral portion of a door of a vehicle, and a hollow seal portion integrally formed on the base portion and elastically abutting on an opening edge portion of a vehicle body when the door is closed. A sealing structure of an opening in a vehicle for sealing between the vehicle body and the door by using a weather strip provided with, wherein the weather strip is a portion corresponding to one corner of the door. Consists of a mold-molded portion molded by a mold-molding method, and the other part consists of an extrusion-molded portion continuously molded by an extrusion-molding method, and the opening edge portion has at least a part thereof. A convex portion is provided along the edge portion, and at least a portion of the seal portion of the extrusion-molded portion that corresponds to the convex portion bulges in a curved shape so as to face the convex portion. Seal wall and width of the seal wall It is configured by a pair of connecting walls that connect the opposite ends and the base, and a connecting portion between the sealing wall and the pair of connecting walls is always in non-contact with the opening edge portion. Sealing structure for the opening of the vehicle. 4. A base portion mounted on a peripheral portion of a front door or a rear door of a vehicle, and integrally formed on the base portion and elastically abutting on an opening edge portion of the vehicle body when the front door or the rear door is closed. A sealing structure of an opening in a vehicle for sealing between the vehicle body and the front door or the rear door by using a weather strip having a hollow seal portion, wherein the weather strip is the front A portion of the door or the rear door corresponding to an upper corner portion of the center pillar portion forming a part of the opening edge portion of the vehicle body is formed by a molding method, and the other portion is an extrusion molding method. It is composed of an extrusion molded portion continuously molded by, the opening edge portion is provided with a convex portion along at least a portion of the edge portion, the extrusion molded portion Of the seal portion, at least a portion corresponding to the convex portion, a seal wall that bulges in a curved shape so as to face the convex portion, and the width direction both ends of the seal wall and the base portion. A seal for an opening in a vehicle, characterized in that the opening is formed by a pair of connecting walls that are connected to each other, and a connecting portion between the seal wall and the pair of connecting walls is not always in contact with the opening edge. Construction. 5. The cross-sectional shapes of one end and the other end of the extruded part are the same or substantially the same.
Or the seal structure of the opening portion in the vehicle according to item 4. 6. The seal for an opening in a vehicle according to claim 1, wherein a space between the pair of connecting walls is wider on the seal wall side than on the base side. Construction. 7. The convex portion includes a first surface and a second surface intersecting with the first surface, and one connecting wall of the pair of connecting walls is substantially the same as the first surface. 7. The seal structure for an opening in a vehicle according to claim 1, wherein the connecting wall is formed so as to extend in parallel and the other connecting wall extends substantially in parallel with the second surface. 8. The seal structure for an opening in a vehicle according to claim 1, wherein a length of each of the connecting walls is larger than a thickness of the seal wall. 9. The vehicle according to claim 1, wherein when the door is in the closed state, the top of the convex portion is located substantially in the center of the seal wall. Seal structure of the opening in.