JP4220222B2 - Weather strip and its sealing structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a weather strip that elastically contacts an open / close body such as a back door, a trunk lid, and a hood of an automobile and seals the open / close body and a seal structure thereof.
[0002]
[Prior art]
Conventionally, as shown in FIG. 3, a weather strip 50 is known that seals between an opening / closing body 100 by elastically contacting the opening / closing body 100 such as a back door, a trunk lid, and a hood of an automobile. The weather strip 50 is formed on a trim portion 51 having a substantially U-shaped cross section that is attached to a flange F standing from a body panel 101 of an automobile, and a back wall 51c that connects both side walls 51a and 51b of the trim portion 51. , A pantograph-type hollow seal portion 52 elastically contacting the opening / closing body 100, a plurality of projecting strips 53 provided inside the trim portion 51, and a lip extending from one side wall 51a of the trim portion 51 and elastically contacting the body panel 101 54.
[0003]
However, the pantograph-type hollow seal portion 52 is a so-called line seal that is formed on the back wall 51c of the trim portion 51 and is linear with respect to the opening / closing body 100 in the longitudinal direction of the vehicle. In particular, when the weather strip 50 as a whole swings to the left and right with respect to the flange F at the corner portion of the vehicle body, when water is received from the lateral direction parallel to the opening / closing body 100 when closed, water enters the room. There is a fear.
Further, water entering from a step (not shown) of the overlapping portion of the body panel 101 overflows from a drainage groove 55 formed between the body panel 101 and the lip 54, gets over the flange F, and enters the inside of the vehicle. There is also the risk of generating round water.
Further, the hollow seal portion 52 is completely crushed by the overstroke of the opening / closing body 100. As a result, there is a problem that the bottom is easily pushed and the load becomes excessively large.
[0004]
As countermeasures for these problems, a pad is inserted into the hollow seal portion 52 to improve the sealing performance between the hollow seal portion 52 and the opening / closing body 100, or a sealer is inserted into the trim portion 51 to thereby trim the trim portion 51. It can be considered that the sealing performance between the flange F and the flange F is improved, but the cost is increased.
Therefore, as shown in FIGS. 4 and 5, weather strips 60 and 70 are disclosed in which hollow seal portions 62 and 72 are set laterally with respect to the trim portions 61 and 71 (see Patent Documents 1 and 2).
[0005]
[Patent Document 1]
Japanese Patent Laid-Open No. 3-235736 [Patent Document 2]
Japanese Utility Model Publication No. 51-7819 [0006]
[Problems to be solved by the invention]
According to the weather strip 60 described in the former Patent Document 1, the horizontally set hollow seal portion 62 stably receives a high water pressure from the lateral direction, so that the load is excessively increased due to the overstroke of the rolling or the opening / closing body 200. Can be disturbed.
However, since the small lip 64 is provided from the front end of the side wall 61a on the outdoor side of the trim portion 61 and elastically contacts the body panel 201, a shelf 201a is formed on the body panel 201 from the base portion of the flange F to the vehicle outer side. The space of the drainage groove 65 formed between the body panel 201 and the hollow seal portion 62 is small, and there still remains a problem that water may overflow from the drainage groove 65 and water may be generated.
Moreover, although the hollow seal part 62 is enlarged, since the bridge is not set inside, there exists a problem that the sealing performance in a corner part is bad.
In addition to the lip 66 elastically contacting the body panel 201 from the hollow seal portion 62, a lip 67 extending toward the opening / closing body 200 is provided, and the lip 67 is a line seal with respect to the opening / closing body 200. In some cases, sufficient sealing performance cannot be ensured.
[0007]
On the other hand, according to the weather strip 70 described in the latter patent document 2, the hollow seal portion 72 is set laterally with respect to the trim portion 71 and a bridge 74 is formed inside, but the bridge 74 is short, Since the hollow seal portion 72 itself has a substantially egg shape with a narrow lateral width, the more it is compressed, the greater the resilience, resulting in a larger compressive load and a greater door closing force. In addition, the sealing performance of the hollow seal portion 72 with respect to the opening / closing body 300 is not sufficient. In particular, when a high water pressure is applied from the lateral direction parallel to the opening / closing body 300 when closed, In some cases, it may enter the inside of the car from between.
In addition, a protrusion 76 is set on the inside of the base portion of the hollow seal portion 72 so as to seal between the front end of the side wall 71 a of the trim portion 71 and the body panel 301, and further from the protrusion 76 to the body panel 301. A small lip 77 that is strongly elastically contacted is formed, and a large lip 78 is formed apart from the small lip 77 from the base of the hollow seal portion 72, but a drain groove formed between the large and small lips 77, 78. The space 75 is only about one protrusion 73 provided inside the trim portion 71 and is quite narrow. For this reason, the problem that water overflows from the drainage groove 75 and water is generated remains.
[0008]
Accordingly, an object of the present invention is to provide a weather that can ensure sufficient sealing performance for the opening and closing body, prevent the occurrence of piercing water by providing a large drainage groove, and further improve the sealing performance at the corner portion. It is to provide a strip and its sealing structure.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, a weather strip according to claim 1 of the present invention provides a sealing surface of an opening / closing body (500) when the opening / closing body (500) such as a back door, trunk lid, hood, etc. of an automobile is closed. A trim portion (11) having a substantially U-shaped cross section that is attached to a flange (F) erected from a body panel (501) substantially perpendicular to the body panel (501), and is formed on one side wall (11a) side of the trim portion (11). A weather strip (10) comprising: a hollow seal portion (12) that elastically contacts the opening / closing body (500) when the opening / closing body (500) is closed to seal between the opening / closing body (500), The seal portion (12) is bridged (14) by the upper hollow (12a) on the opening / closing body (500) side, and the lower hollow on the body panel (501) side opposite to the opening / closing body (500) side ( 12b) And the width (L) of the hollow seal portion (12) between the connecting portions of the bridge (14) is made larger than the width (W) of the trim portion (11) perpendicular to the flange (F). In addition to making it bigger,
The upper hollow (12a) includes the bridge (14), a first hollow wall (16), and a second hollow wall (17) extending from the one side wall (11a) toward the opening / closing body (500). The upper hollow (12a) has a substantially Δ shape with a top on the upper side, and the lower hollow (12b) extends from the bridge (14) and the one side wall (11a) to the body. A third hollow wall (18) extending toward the panel (501) and having a lip (20) elastically contacting the body panel (501) at the tip, and the one of the one more than the tip of the third hollow wall (18) It consists of a fourth hollow wall (19) that connects the portion (P) on the side wall (11a) side and the tip portion of the bridge (14), and the sectional shape of the lower hollow (12b) is the top on the lower side. a substantially ▽ shape having, moreover, the trim A gap (Q) is provided between the tip of the one side wall (11a) of (11) and the body panel (501), and a space (15) larger than the gap (Q) is provided to the one side wall ( 11a) and the lip (20) of the third hollow wall (18) .
[0011]
According to a second aspect of the present invention, in the weather strip according to the first aspect, the two sides of the first hollow wall (16) and the second hollow wall (17) bulge in a convex shape toward the outside. It is characterized by being put out.
[0012]
The invention according to claim 3 is the weather strip according to claim 1 or 2 , wherein the fourth hollow wall (19) is a connection between the bridge (14) and the first hollow wall (16). It is connected to the part (S) that is closer to the one side wall (11a) than the part, and a convex part (21) is formed at the connection part between the bridge (14) and the first hollow wall (16). It is characterized by that.
[0014]
The invention described in claim 4, wherein the weather strip according to any one of claims 1 to 3, low rigidity of the lip (20) formed in the distal end of the third hollow wall (18) In addition to being molded with a member, a portion other than the lip (20) of the third hollow wall (18) is molded with a highly rigid member.
[0015]
The invention according to claim 5 is the weather strip sealing structure according to any one of claims 1 to 4 , wherein the opening / closing body (500) is closed when the opening / closing body (500) is closed. The intrusion direction of the seal surface is substantially parallel to the flange (F), and a stepped portion (500a) is formed in the opening / closing body (500), and the hollow seal portion (12) of the stepped portion (500a) is formed. ) Side corner (500b) is adapted to elastically contact the vicinity of the top of the upper hollow (12a) when the opening / closing body (500) is closed.
[0016]
Symbols in parentheses indicate corresponding elements or corresponding matters described in the drawings and embodiments of the invention described later.
[0017]
According to the weather strip of the present invention, since the width of the hollow seal portion is set to be larger than the width of the trim portion, a sufficient sealing function can be obtained by sealing the surface of the opening / closing body. Can also be secured. In addition, since the hollow seal portion having such a large size is divided into two by a bridge, a weather strip excellent in sealing performance is provided even when a weather strip is attached to the corner portion.
[0018]
Also, the upper hollow has a substantially Δ shape with the bridge, the first hollow wall, and the second hollow wall, and the lower hollow has a substantially ▽ shape with the bridge, the third hollow wall, and the fourth hollow wall. A large drainage groove can be provided between the lip and one side wall by forming a lip that elastically contacts the body panel at the tip of the third hollow wall extending from the side to the body panel. In particular, a gap is provided between the tip of one side wall and the body panel, and a space larger than the gap is provided between the one side wall and the lip of the third hollow wall to further increase the size (enlarge space). A drain can be provided.
By making the drainage groove sufficiently large in this way, it is possible to prevent the water entering from the portion where the number of plate of the body panel changes from entering the vehicle interior beyond the flange.
Furthermore, the lip formed at the tip of the third hollow wall is molded with a member having low rigidity, and the portion other than the lip of the third hollow wall is formed with a member having high rigidity, so that the lip is easily bent and deformed. It follows the body panel, but the part other than the lip of the third hollow wall is not easily deformed even when the closing force of the opening / closing body is applied to the hollow seal part. Even at times, it is hardly narrowed, and a large-sized (larger space) state can always be secured.
[0019]
In addition, since the two sides of the first hollow wall and the second hollow wall are bulged in a convex shape toward the outside, a stable sealing surface is obtained with respect to the opening / closing body, so that the sealing performance is improved.
[0020]
Further, by forming a convex portion at the connecting portion between the bridge and the first hollow wall, a high water pressure is applied between the convex portion and the end portion on the bridge side of the fourth hollow wall, and there is a force to push the upper hollow toward the opening / closing body side. Since it works further, the sealing performance is improved accordingly.
[0021]
According to the weather strip sealing structure of the present invention, the intrusion direction of the sealing surface of the opening / closing body when the opening / closing body is closed is substantially parallel to the flange, and a step portion is formed in the opening / closing body. Since the corner on the side of the hollow seal part is elastically contacted near the top of the upper hollow when the opening / closing body is closed, the upper hollow is not put into a so-called bending compression state when the opening / closing body is closed. , Compression compression. As a result, a sufficient sealing performance can be obtained by using a face seal instead of a line seal in the longitudinal direction of the vehicle for the part sealed with respect to the opening / closing body.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a state before the weather strip 10 according to the embodiment of the present invention is elastically contacted with an opening / closing body 500 such as a back door, a trunk lid, and a hood, and FIG. Respectively.
A weather strip 10 according to an embodiment of the present invention mainly includes a trim portion 11 having a substantially U-shaped cross section and a hollow seal portion 12 formed integrally therewith.
[0023]
The trim portion 11 includes a vehicle outer side wall 11a that is one side wall, a vehicle inner side wall 11b that is the other side wall, and a rear wall 11c that connects both side walls 11a and 11b. It is attached to a flange F that is erected from the body panel 501 so as to be substantially perpendicular to the sealing surface (including those slightly inclined with respect to the vertical as shown in FIG. 1). The back wall 11c is slightly raised upward in FIG. 1, but may be flat. In particular, a gap having a width of Q is provided between the front end of the side wall 11a outside the vehicle and the body panel 501. In addition, although the clearance gap is also provided between the front-end | tip of the side wall 11b inside a vehicle, and the body panel 501, this may be made to contact | abut without a clearance gap. A plurality of protrusions 13 held by the flange F are formed on the flanges F of the side walls 11a and 11b, and the trim part 11 is covered with an interior material (not shown) on the inner side of the side wall 11b. An interior lip 31 having a function of preventing the inward inclination of the vehicle is provided, and a core metal 32 is embedded in the trim portion 11.
[0024]
The hollow seal portion 12 is formed on the side wall 11a side of the trim portion 11 on the vehicle exterior side, and is elastically contacted with the opening / closing body 500 when the opening / closing body 500 is closed to seal between the opening / closing body 500.
The hollow seal portion 12 will be described in more detail. The hollow seal portion 12 includes an upper hollow 12a on the opening / closing body 500 side by a bridge 14 and a lower hollow 12b on the body panel 501 side opposite to the opening / closing body 500 side. It is divided into two. The upper hollow 12a is composed of a bridge 14, a first hollow wall 16 and a second hollow wall 17, and the cross-sectional shape is a substantially Δ shape having a top on the upper side, while the lower hollow 12b includes the bridge 14, It consists of three hollow walls 18 and a fourth hollow wall 19, and the cross-sectional shape is a substantially ▽ shape having a top on the lower side.
[0025]
The bridge 14 extends substantially parallel to the opening / closing body 500 when closed from the vicinity of a substantially central portion of the side wall 11a on the vehicle exterior side. The connection position of the bridge 14 with the first hollow wall 16 depends on the size and thickness of the bridge 14 and the first to fourth hollow walls 16 to 19. If the bridge 14 is too close to the body panel 501, However, since the closing force of the opening / closing body 500 increases if it is too close to the opening / closing body 500 side, it is preferable to consider the balance between the two.
1, the second hollow wall 17 extends obliquely upward from the upper side of the side wall 11a outside the vehicle to the opening / closing body 500 side, and the third hollow wall 18 extends from the lower side of the side wall 11a outside the vehicle to the body panel 501 side. It extends diagonally downward. The fourth hollow wall 19 is connected to the portion P on the side wall 11a on the vehicle outer side with respect to the tip of the third hollow wall 18 and the tip of the bridge 14, more specifically, the connection between the bridge 14 and the first hollow wall 16. It is connected to a part S closer to the side wall 11a on the vehicle outer side than the part. Thereby, the convex part 21 is formed in the connection part of the bridge | bridging 14 and the 1st hollow wall 16. As shown in FIG.
In addition, the connection position of the bridge 14, the first hollow wall 16, and the fourth hollow wall 19 can be concentrated at one point so as not to form the convex portion 21, but by forming the convex portion 21, high water pressure can be achieved. Is applied between the convex portion 21 and the end portion of the fourth hollow wall 19 on the bridge 14 side, and the force that pushes the upper hollow 12a toward the opening / closing body 500 further acts, so that the sealing performance is improved accordingly.
[0026]
A lip 20 that elastically contacts the body panel 501 is formed at the tip of the third hollow wall 18. The lip 20 is formed of a low-rigidity member such as sponge rubber on a portion other than the lip 20 of the third hollow wall 18 formed of a high-rigidity member such as solid rubber.
[0027]
The two sides of the first hollow wall 16 and the second hollow wall 17 forming the upper hollow 12a bulge outwardly so as to open and close when the upper hollow 12a is bent by elastic contact. The area in contact with 500 is increased.
The width L of the hollow seal portion 12 between the connecting portions of the bridge 14 is set to be larger than the width W of the trim portion 11 in the direction perpendicular to the flange F.
[0028]
Further, the space that becomes the drainage groove 15 having a width R larger than the width Q of the gap between the front end of the vehicle-side side wall 11a and the body panel 501 described above is used as the third hollow wall 18 and the vehicle-side side wall 11a. The side wall 11a and the third hollow wall 18 on the outer side of the vehicle are extended not from the front end but obliquely downward from a high position closer to the connecting portion side of the bridge 14 than the front end and away from the base portion of the flange F. It is provided between the lips 20.
As described above, the lip 20 of the third hollow wall 18 formed of a low-rigidity member easily bends and deforms to follow the body panel 501, but the portion other than the lip 20 of the third hollow wall 18 has rigidity. Even when the closing force of the opening / closing body 500 is applied to the hollow seal portion 12, it is not easily deformed. As a result, the drainage groove provided between the side wall 11 a outside the vehicle and the lip 20 of the third hollow wall 18. No. 15 is hardly narrowed even when the opening / closing body 500 is closed, and it is possible to ensure an enlarged state (larger space).
[0029]
Further, the thickness of the second hollow wall 17 is made thinner than the thickness of the first hollow wall 16, and the thin portion N is provided in the middle of the second hollow wall 17.
By doing so, the thin hollow second hollow wall 17 and the thin wall portion N suppress the improvement of the closing force of the opening / closing body 500 such as a door, and the folding point of the second hollow wall 17 when the opening / closing body 500 is closed. The first hollow wall 16 having a large thickness is prevented from protruding outside the vehicle (outside of the vehicle), so that the sealing performance can be ensured.
[0030]
Next, the sealing structure of the weather strip 10 configured as described above will be described. When the opening / closing body 500 is closed, the opening / closing body 500 is substantially parallel to the portion of the body panel 501 at the base portion of the flange F, The step portion 500a is formed so that the opposing portion is located further on the hollow seal portion 12 side than the portion facing the trim portion 11.
The intrusion direction of the sealing surface of the opening / closing body 500 when the opening / closing body 500 is closed is substantially parallel to the flange F, and the corner portion 500b on the hollow seal portion 12 side of the stepped portion 500a of the opening / closing body 500 is As shown in FIG. 2, when the opening / closing body 500 is closed, it is elastically contacted near the top of the upper hollow 12a. The compressive strength received by the upper hollow 12a at this time is not strong compression to the extent that the bridge 14 bottoms out against the third hollow wall 18 or the fourth hollow wall 19, and the bridge 14 is slightly deformed as the upper hollow 12a is deformed. Therefore, the compression load is not high and the closing force of the opening / closing body 500 can be small.
[0031]
Thus, since the width L of the hollow seal portion 12 is set to be larger than the width W of the trim portion 11, a sufficient sealing function can be obtained, and in particular, the corner portion 500b of the step portion 500a is hollowed upward. Since it is elastically contacted in the vicinity of the top of 12a, when the opening / closing body 500 is closed, the upper hollow 12a is not compressed into a so-called bending compression state but compression compression. Thereby, sufficient sealing performance is obtained with respect to the opening / closing body 500 by a surface seal instead of a line seal.
Further, the drainage groove 15 provided between the side wall 11a on the outside of the vehicle and the lip 20 of the third hollow wall 18 is secured in an enlarged state (larger space) even when the opening / closing body 500 is closed. Can be prevented.
[0032]
【The invention's effect】
As described above, according to the weather strip of the present invention, since the width of the hollow seal portion is set larger than the width of the trim portion, a sufficient sealing function can be obtained by sealing the surface with respect to the opening and closing body, Sealing properties can be secured against vehicle variations. In addition, since the hollow seal portion having such a large size is divided into two by a bridge, a weather strip excellent in sealing performance is provided even when a weather strip is attached to the corner portion.
[0033]
Also, the upper hollow has a substantially Δ shape with the bridge, the first hollow wall, and the second hollow wall, and the lower hollow has a substantially ▽ shape with the bridge, the third hollow wall, and the fourth hollow wall. A large drainage groove can be provided between the lip and one side wall by forming a lip that elastically contacts the body panel at the tip of the third hollow wall extending from the side to the body panel. In particular, a gap is provided between the tip of one side wall and the body panel, and a space larger than the gap is provided between the one side wall and the lip of the third hollow wall to further increase the size (enlarge space). A drain can be provided.
By making the drainage groove sufficiently large in this way, it is possible to prevent the water entering from the portion where the number of plate of the body panel changes from entering the vehicle interior beyond the flange.
Furthermore, the lip formed at the tip of the third hollow wall is molded with a member having low rigidity, and the portion other than the lip of the third hollow wall is formed with a member having high rigidity, so that the lip is easily bent and deformed. It follows the body panel, but the part other than the lip of the third hollow wall is not easily deformed even when the closing force of the opening / closing body is applied to the hollow seal part. Even at times, it is hardly narrowed, and a large-sized (larger space) state can always be secured.
[0034]
In addition, since the two sides of the first hollow wall and the second hollow wall are bulged in a convex shape toward the outside, a stable sealing surface is obtained with respect to the opening / closing body, so that the sealing performance is improved.
[0035]
Further, by forming a convex portion at the connecting portion between the bridge and the first hollow wall, a high water pressure is applied between the convex portion and the end portion on the bridge side of the fourth hollow wall, and there is a force to push the upper hollow toward the opening / closing body side. Since it works further, the sealing performance is improved accordingly.
[0036]
According to the weather strip sealing structure of the present invention, the intrusion direction of the sealing surface of the opening / closing body when the opening / closing body is closed is substantially parallel to the flange, and a step portion is formed in the opening / closing body. Since the corner on the side of the hollow seal part is elastically contacted near the top of the upper hollow when the opening / closing body is closed, the upper hollow is not put into a so-called bending compression state when the opening / closing body is closed. , Compression compression. Thereby, sufficient sealing performance is obtained with respect to the opening / closing body by a face seal rather than a line seal.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a state in which a weather strip according to an embodiment of the present invention is attached to a flange.
2 is a cross-sectional view showing a state in which an opening / closing body is elastically contacted with the weather strip shown in FIG. 1. FIG.
FIG. 3 is a cross-sectional view showing a weather strip according to a conventional example.
FIG. 4 is a cross-sectional view showing a weather strip according to another conventional example.
FIG. 5 is a cross-sectional view showing a weather strip according to still another conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Weather strip 11 Trim part 11a Car side wall 11b Car side wall 11c Back wall 12 Hollow seal part 12a Upper hollow 12b Lower hollow 13 Projection piece 14 Bridge 15 Drain groove 16 First hollow wall 17 Second hollow wall 18 Third hollow wall 19 Fourth hollow wall 20 Lip 21 Protruding part 31 Interior lip 32 Core bars 50, 60, 70 Weather strips 51, 61, 71 Trim parts 51a, 51b, 61a, 61b, 71a, 71b Side walls 51c, 61c, 71c Back wall 52, 62, 72 Hollow seal part 53, 63, 73 Projection piece 54 Lip 55, 65, 75 Drain groove 64 Small lip 66, 67 Lip 74 Bridge 76 Projection 77 Small lip 78 Large lip 100, 200, 300, 500 Opening and closing body 101, 201, 301, 501 Body panel 201a Shelf 500a Stepped portion 500b Corner portion F Flange L Width N of hollow seal portion N Thin portion Q Width of clearance R Width of drainage groove S Site close to side wall side outside vehicle W Width of trim portion

Claims (5)

A trim part having a substantially U-shaped cross section that is attached to a flange standing upright from a body panel substantially perpendicular to the sealing surface of the opening / closing body when the opening / closing body of a car back door, trunk lid, hood, etc. is closed, A weatherstrip comprising a hollow seal portion formed on one side wall and sealingly sealing between the opening and closing body when the opening and closing body is closed,
The hollow seal portion is divided into two by a bridge, an upper hollow on the opening / closing body side and a lower hollow on the body panel side opposite to the opening / closing body side, and the width of the hollow seal portion between the connecting portions of the bridge In addition to the width of the trim portion perpendicular to the flange,
The upper hollow is composed of the bridge, the first hollow wall, and a second hollow wall extending from the one side wall to the opening / closing body side, and the upper hollow has a substantially Δ shape having a top portion on the upper side. Yes,
The lower hollow has the bridge, a third hollow wall extending from the one side wall toward the body panel and having a tip formed with a lip that elastically contacts the body panel, and the third hollow wall more than the tip of the third hollow wall. It consists of a fourth hollow wall that connects one side wall portion and the tip end portion of the bridge, and the lower hollow cross-sectional shape is a substantially ▽ shape having a top on the lower side ,
In addition, a gap is provided between the tip of the one side wall of the trim portion and the body panel, and a space larger than the gap is provided between the one side wall and the lip of the third hollow wall. A featured weather strip.   2. The weather strip according to claim 1, wherein two sides of the first hollow wall and the second hollow wall bulge outwardly in a convex shape.   The fourth hollow wall is connected to a portion closer to the one side wall than a connection portion between the bridge and the first hollow wall, and a convex portion at a connection portion between the bridge and the first hollow wall. The weather strip according to claim 1, wherein the weather strip is formed. Thereby forming a lip formed at the tip of the third hollow wall member having low rigidity, one of claims 1 to 3, characterized in that the portion other than the lip of the third hollow wall molding at a high member rigid The weather strip according to any one of the above. The weatherstrip sealing structure according to any one of claims 1 to 4 ,
The intrusion direction of the sealing surface of the opening / closing body when the opening / closing body is closed is substantially parallel to the flange, and a step portion is formed in the opening / closing body, and a corner portion of the step portion on the hollow seal portion side is formed. A weatherstrip sealing structure characterized in that, when the opening / closing body is closed, it is elastically contacted near the top of the upper hollow.

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