Drainage and exhaust structure and vehicle door sealing strip

Abstract

The invention provides a drainage and exhaust structure and a vehicle door sealing strip. The drainage and exhaust structure ensures waterproofness of corners of the vehicle door sealing strip and improves exhaust performance when a vehicle door is closed. In a molded part (13) of a door seal strip (1a), a first extension base (136) is provided integrally with a mounting base, and has a substantially trapezoidal flow underside (130) extending in the pillar direction from the roof side. An extended seal lip (138) is provided integrally with the first seal lip on the roof side in such a manner that the extended seal lip (138) is in contact with the door panel while ensuring a drainage / exhaust port between the extended seal lip and a second seal lip (135) on the pillar side at the outer peripheral edge of the first extended base. A third seal lip (14) is provided below the flow so as to secure an exhaust port outside the vehicle between the second seal lip and the vicinity of the lower end of the first extended base portion, and so as to be in contact with the door panel. A fourth seal lip (15) is provided at a corner portion of the molded portion on the inside of the vehicle so as to secure an in-vehicle exhaust port and to abut against the door panel.

Description

Technical Field

[0001] The present invention relates to a structure of a corner portion of a door weather strip which is mounted on a door panel of an automobile and seals between the door panel and a vehicle body panel. Background Art

[0002] As a conventional door weather strip for sealing between a door panel and a vehicle body panel, for example, the door weather strip disclosed in Patent Document 1 is exemplified. Figure 6 Door sealing strip 9.

[0003] The door weather strip 9 includes a die-molded portion 13 formed by joining an upper extruded portion 11 on the roof side and a lower extruded portion 12 on the pillar side to form a corner portion.

[0004] In the molded portion 13, the hollow mounting base 131 of the upper extruded portion 11 is continuous with the hollow mounting base 131 of the lower extruded portion 12. The hollow seal portion 132 of the upper extruded portion 11 is continuous with the hollow seal portion 132 of the lower extruded portion 12. The first sealing lip 133 on the roof side is continuous with the first sealing lip 133 of the upper extruded portion 11. The auxiliary lip 134 on the roof side is continuous with the auxiliary lip 134 of the upper extruded portion 11. The second sealing lip 135 on the pillar side is continuous with the second sealing lip 135 of the lower extruded portion 12.

[0005] Furthermore, a first extension base 136 is provided on the mounting base 131 of the molded portion 13. The first extension base 136 has a substantially trapezoidal flow bottom surface 130 extending from the roof side in the pillar direction. An extension sealing lip 138 is provided integrally with the first sealing lip 133 on the outer periphery of the first extension base 136 so as to ensure a drain outlet 137 between the lower end of the first extension base 136 and the second sealing lip 135 and to abut against the door panel. Furthermore, a portion of the flow bottom surface 130 is provided as follows. Figure 7 The third sealing lip 14 shown abuts the door panel along the sealing line S3 and is continuous with the first sealing lip 133 and the second sealing lip 135 .

[0006] Furthermore, a fourth sealing lip 15 is provided at a corner of the molded portion 13 on the vehicle interior side of the mounting base 131 of the molded portion 13 to ensure a seal line S4 with the door panel. The fourth sealing lip 15 is formed on the end surface of a second extended base 18, which extends from the corner of the molded portion 13 on the vehicle interior side in the direction of the pillar and is integrally formed with the mounting base 131 of the molded portion 13.

[0007] In the molded portion 13 , water that has penetrated between the third seal lip 14 and the extended seal lip 138 flows down along the lower flow surface 130 and is discharged to the outside of the vehicle from between the distal ends of the third seal lip 14 and the extended seal lip 138 .

[0008] Prior art literature

[0009] Patent Literature

[0010] Patent Document 1: Japanese Patent No. 5476154

[0011] Generally speaking, a door seal is continuous with the sealing line of the door panel over the entire circumference to ensure waterproofness, isolating the space inside the vehicle from the outside, and does not ensure air ventilation inside the vehicle.

[0012] If the door is closed when getting in or out of the car, the air outside the car will enter the car and temporarily increase the air pressure inside the car. Even if the vehicle is equipped with exhaust holes, if there is a lot of exhaust gas from the car, the door may not close completely due to the reaction force between the air pressure inside the car and the door sealing strip.

[0013] In order to prevent water from intruding into the car, the door sealing strip 9 is as shown in FIG. Figure 7 As shown, the third sealing lip 14 is continuously connected to the sealing line S3 of the door panel to the second sealing lip 135 of the lower extruded portion 12, and the air discharge performance during the door closing operation is not ensured. Summary of the Invention

[0014] The present invention has been made in view of the above circumstances, and an object of the present invention is to improve air discharge during door closing while ensuring waterproofness at the corners of a door weather strip.

[0015] Means for solving problems

[0016] The cam is secured to the rear of the vehicle when the vehicle is in a state of emergency and is adapted to engage with the vehicle body when the vehicle is in emergency.

[0017] Effects of the Invention

[0018] According to the present invention, the air discharge performance during the door closing operation is improved while ensuring the waterproof performance at the corner portion of the door weather strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a perspective view of a corner portion of a door weather strip according to one embodiment of the present invention.

[0020] Figure 2 yes Figure 1 An explanatory diagram of the flow of exhaust and drainage at the corners.

[0021] Figure 3 yes Figure 1 KG1-KG1 cross-section diagram.

[0022] Figure 4 yes Figure 1 KG2-KG2 cross-section diagram.

[0023] Figure 5 It is a side view of a vehicle having a front door and a rear door to which the door weather strip of the present invention is applied.

[0024] Figure 6 This is a perspective view of a corner portion of a conventional door weather strip.

[0025] Figure 7 It shows Figure 6 A three-dimensional view of the sealing line with the door panel in the corner.

[0026] Description of Reference Numerals

[0027] 1a, 1b…door sealing strips

[0028] 2…car, 3…front door, 4…rear door, 5, 6…door and window frame, 7…body panel, 8…door panel, 51…retainer

[0029] 11...upper extrusion forming part, 12...lower extrusion forming part, 13...molding forming part

[0030] 130…flow bottom, 131…mounting base, 132…hollow sealing portion, 133…first sealing lip, 134…auxiliary lip, 135…second sealing lip, 136…first extended base, 137…drainage vent, 138…extended sealing lip

[0031] 14…third sealing lip, 140…exterior exhaust port

[0032] 15... the fourth sealing lip, 150... the exhaust port inside the vehicle

[0033] 16…Second extended base

[0034] 17…guide portion, 170…guide surface DETAILED DESCRIPTION

[0035] Hereinafter, embodiments of the door weather strip according to the present invention will be described with reference to the drawings.

[0036] The drainage and exhaust structure of the present invention is applied to Figure 5 The illustrated embodiment shows corners of door weather strips 1 a and 1 b attached to the door sashes 5 and 6 of the front door 3 and rear door 4 of the automobile 2 , respectively, surrounded by a dotted line d.

[0037] Door sealing strips 1a and 1b are installed along the periphery of the front door 3 and the rear door 4 of the car 2. Figure 5 When the front door 3 and the rear door 4 are closed, the gap between them and the body panel 7 of the automobile 2 is sealed.

[0038] Figure 1 The door weather strip 1 a shown includes a molded portion 13 formed by joining an upper extruded portion 11 on the roof side and a lower extruded portion 12 on the pillar side to form a corner portion.

[0039] like Figure 1 As shown, the upper extruded portion 11 includes a hollow mounting base 131, a hollow sealing portion 132, a first sealing lip 133, and an auxiliary lip 134. The mounting base 131 is continuous with the mounting base 131 on the roof side of the molded portion 13. Figure 3 As shown, the door panel 8 is fitted with a retainer 51 held in the door window frame 5 on the roof side. The hollow seal portion 132 is continuous with the hollow seal portion 132 of the molded portion 13, abutting the door panel 8 on the vehicle interior side of the mounting base 131. It also elastically contacts the vehicle body panel 7 on the roof side when the front door 3 is closed. The first seal lip 133 is continuous with the first seal lip 133 on the roof side of the molded portion 13, abutting the inner surface of the door window frame 5 on the vehicle exterior side of the mounting base 131. The auxiliary lip 134 is continuous with the auxiliary lip 134 on the roof side of the molded portion 13, and elastically contacts the vehicle body panel 7 on the vehicle exterior side of the mounting base 131 when the front door 3 is closed.

[0040] like Figure 1 As shown, the lower extrusion molding part 12 includes a hollow mounting base 131, a hollow sealing part 132, and a second sealing lip 135. The mounting base 131 is continuous with the mounting base 131 on the support side of the molded molding part 13, as shown in FIG. Figure 4As shown, it is assembled around the door panel 8. The hollow sealing portion 132 is continuous with the hollow sealing portion 132 of the molded portion 13. When the front door 3 is closed, it elastically contacts the vehicle body panel 7 on the pillar side on the vehicle interior side of the mounting base 131. The second sealing lip 135 is continuous with the second sealing lip 135 on the pillar side of the molded portion 13. It abuts the inner surface of the door panel 8 on the vehicle exterior side of the mounting base 131.

[0041] like Figure 1 、 2 As shown, the molded portion 13 includes a hollow mounting base 131, a hollow sealing portion 132, a first sealing lip 133 on the roof side, a second sealing lip 135 on the pillar side, a first extended base 136, and an extended sealing lip 138. The first extended base 136 is integrally formed with the mounting base 131 and has a substantially trapezoidal flow surface 130 extending in the pillar direction. The extended sealing lip 138 is integrally formed with the first sealing lip 133 on the outer periphery of the first extended base 136, ensuring a drain outlet 137 between the lower end of the first extended base 136 and the second sealing lip 135 and abutting against the door panel 8.

[0042] Furthermore, on the lower surface 130 , a third seal lip 14 is integrally provided with the first seal lip 133 so as to secure an exterior exhaust port 140 between the vicinity of the lower end of the first extended base 136 and the second seal lip 135 and abut against the door panel 8 .

[0043] Furthermore, a fourth seal lip 15 that contacts the door panel 8 is provided on the attachment base 131 of the molded portion 13 so as to secure an interior exhaust port 150 at a corner portion of the molded portion 13 on the interior side of the vehicle.

[0044] The fourth sealing lip 15 is formed on the end surface of a second extended base portion 16 having a rectangular plate shape (e.g., a substantially trapezoidal plate shape). The second extended base portion 16 extends from a corner portion on the vehicle interior side of the molded portion 13 in the pillar direction and is integrally provided with the mounting base 131 of the molded portion 13. Furthermore, a guide portion 17 having a guide surface 170 for guiding exhaust gas from the vehicle interior exhaust port 150 toward the vehicle exterior exhaust port 140 is integrally provided on the second extended base portion 16 and the mounting base 131.

[0045] One end A of the fourth seal lip 15 securing the interior exhaust port 150 is set higher than one end B of the third seal lip 14 securing the exterior exhaust port 140. Furthermore, one end B of the third seal lip 14 is set closer to the interior of the vehicle than one end A of the fourth seal lip 15 securing the interior exhaust port 150.

[0046] Below, refer to Figure 2The dotted line in the figure shows the exhaust path, and the dashed line shows the drainage path.

[0047] As the front door 3 closes, air entering the vehicle interior is diverted to the guide portion 17 via the interior exhaust port 150 of the molded portion 13 of the door seal 1a. The air supplied to the guide portion 17 flows downward along the guide surface 170 in the direction of the pillars and is diverted to the exterior exhaust port 140. The air then flows from the exterior exhaust port 140 to the vicinity of the lower end of the underflow surface 130 of the first extended base 136 and is rapidly discharged to the exterior through the drainage outlet 137. Meanwhile, water that has intruded into the first extended base 136 of the molded portion 13 descends along the underflow surface 130 in the direction of the pillars and is rapidly discharged to the exterior through the drainage outlet 137.

[0048] With the door weather strip 1a described above, air entering the vehicle interior during the closing process of the front door 3 is discharged to the exterior of the vehicle through the interior exhaust port 150, the exterior exhaust port 140, and the drainage exhaust port 137 of the molded portion 13. This ensures waterproofing at the corners of the door weather strip 1a while also improving air discharge during the door closing operation.

[0049] In particular, by positioning the interior exhaust port 150 higher than the exterior exhaust port 140 in the molded portion 13, the seal line S1 from the pillar side and the seal line S2 from the roof side intersect, becoming discontinuous with the seal line of the door panel 8. Furthermore, during the closing process of the front door 3, air entering the vehicle detours along the seal lines S1 and S2 before being discharged through the drainage exhaust port 137 of the molded portion 13. This suppresses the rise in interior air pressure, eliminates resistance when the front door 3 closes, and improves the closing performance of the front door 3.

[0050] In addition, by staggering the sealing lines S1 and S2 and setting one end A of the fourth sealing lip 15 that ensures the exhaust port 150 inside the vehicle at a position higher than one end B of the third sealing lip 14 that ensures the exhaust port 140 outside the vehicle, water is prevented from entering the vehicle, and waterproof performance and exhaust performance are achieved at the same time.

[0051] Furthermore, by positioning the end B of the third seal lip 14 closer to the vehicle interior than the end A of the fourth seal lip 15 , water intrusion from the exterior exhaust port 140 to the interior exhaust port 150 is suppressed, thereby further improving exhaust performance and waterproof performance.

[0052] Furthermore, by forming the fourth seal lip 15 on the end surface of the second extended base portion 16 extending in the pillar direction so as to secure an interior exhaust port 150 at a corner portion on the interior side of the molded portion 13, exhaust can be performed from this corner portion. Furthermore, by providing a guide portion 17 having a guide surface 170 in the second extended base portion 16, exhaust is efficiently performed from the interior exhaust port 150 to the exterior exhaust port 140, further improving exhaust performance.

[0053] It should be noted that the drainage and exhaust structure of the present invention can be used even in Figure 5 It is obvious that the corners of the door weather strip 1b mounted on the door window frame 6 of the rear door 4 of the automobile 2, surrounded by the dotted line d, can also obtain the same waterproof and exhaust performance effects as described above.

Claims

1. A drainage and exhaust structure, characterized in that: The molded part includes an upper extruded part on the roof side and a lower extruded part on the pillar side. The upper extruded portion includes a first sealing lip that abuts against the inner surface of the door window frame portion on the roof side. The lower extruded portion includes a second sealing lip that abuts against the inner surface of the door and window frame portion on the pillar side. The molded portion includes a first extended base portion having a flow-down surface extending from the roof side in the direction of the pillar, and an extended sealing lip integrally provided on the outer peripheral edge of the first extended base portion with the first sealing lip so as to ensure a drain and exhaust port between the first extended base portion and the second sealing lip and to abut against the door panel. A third sealing lip is provided integrally with the first sealing lip below the flow path so as to ensure an exterior exhaust port between the third sealing lip and the second sealing lip and to abut against the door panel. A fourth seal lip is formed at a corner portion of the molded portion on the vehicle interior side, the fourth seal lip ensuring an in-vehicle exhaust port and coming into contact with the door panel.

2. The drainage and exhaust structure according to claim 1, wherein: One end of the fourth seal lip securing the interior exhaust port is set at a position higher than one end of the third seal lip securing the exterior exhaust port.

3. The drainage and exhaust structure according to claim 1, wherein: One end of the third seal lip securing the exterior exhaust port is set closer to the interior of the vehicle than one end of the fourth seal lip securing the interior exhaust port.

4. The drainage and exhaust structure according to claim 1, wherein: The fourth seal lip is formed on an end surface of a second extended base portion that extends from a corner portion of the molded portion on the vehicle interior side in the pillar direction and is provided integrally with the molded portion.

5. The drainage and exhaust structure according to claim 4, characterized in that: The second extension base is provided with a guide portion that guides exhaust gas from the vehicle interior exhaust port toward the vehicle exterior exhaust port.

6. A door sealing strip, characterized in that: The invention has the drainage and exhaust structure according to claim 1.

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