Sealing strip for automobile

Abstract

The sealing strip for the automobile comprises a mounting base part (22) which is mounted on a flange part (2) formed along a door opening edge of an automobile body and formed by overlapping a plurality of metal plates, and is provided with an automobile inner side wall (23), an automobile outer side wall (24) and a connecting wall (25) for connecting the two side walls; a hollow seal portion (26) integrally provided on an outer surface of the mounting base portion and elastically contacting the door; and a holding lip (27) having a base end portion (27a) joined to the inner surface of the vehicle inner side wall, one side surface (27c) of a tip end portion (27b) in elastic contact with the vehicle inner side surface (2a) of the flange portion, and a cutout portion (29) provided at a position closer to the base end portion side than the one side surface of the tip end portion of the holding lip, the tip end portion being formed so as to be bendable by means of the cutout portion. The front end part of the holding lip is in elastic contact with the vehicle inner side surface of the flange part through the notch part in a tight fit state, so that the penetration and invasion of noise from the interior of the mounting base part to the vehicle inner side can be inhibited.

Description

Technical Field

[0001] This invention relates to a sealing strip for automobiles, which is installed around the periphery of the door opening on the side of the vehicle body and seals the interior and exterior of the vehicle by elastically contacting the door. Background Technology

[0002] As for the existing automotive sealing strips (hereinafter referred to as sealing strips) for such door openings, the technical solution described in Patent Document 1 below is known.

[0003] Figure 1 This is a perspective view of a car to which the present invention and existing automotive sealing strips are applicable. Figure 2 To indicate existing automotive sealing strips Figure 1 AA-line sectional view, Figure 3 This is a partial sectional view showing the structure of the flange side of the vehicle body opening. Figure 4 A schematic diagram illustrating the path of noise entering the vehicle.

[0004] The sealing strip 1 mentioned in the bulletin, such as Figures 1 to 3 As shown, it is installed on flange 2, which is formed by overlapping multiple metal plates P1 to P3 formed along the periphery of the body opening 03 of the front door 02 of the automobile 01.

[0005] like Figure 2 As shown, the sealing strip 1 has: an inverted U-shaped mounting base 3, which is inserted into and fitted into the front end of the flange 2, and has an inner side wall 4, an outer side wall 5, and a connecting wall 6 connecting the two side walls 4 and 5; and a hollow sealing part 7 made of sponge rubber material, which is integrally formed with the outer surface of the outer side wall 5 of the mounting base 3. When the front door 02 is closed, the periphery of the front door 02 is in elastic contact with the hollow sealing part 7.

[0006] The mounting base 3 has a U-shaped core material 3a embedded inside, and three protrusions 5a, 5b, and 5c integrally formed on the inner surface of the outer sidewall 5, abutting against the outer side surface of the flange 2. On the other hand, a retaining lip 8 protrudes from the inner surface of the lower end of the inner sidewall 4, opposite to the connecting wall 6, toward the outer sidewall 5. The base end 8a of the retaining lip 8 is joined to the lower end of the inner sidewall 4, and one side 8c of the front end 8b elastically contacts the inner side surface 2a of the flange 2. The protrusions 5a-5c and the retaining lip 8 abut against the two sides 2a and 2b of the flange 2 in a clamping state to retain the mounting base 3.

[0007] In addition, a lip portion 9 extending toward the inside of the vehicle is integrally provided between the connecting wall 6 of the mounting base 3 and the inside of the vehicle side wall 4. The outer end portion of an interior trim member 10 such as a door trim or a decorative strip extending from the inside of the vehicle toward the vehicle side wall 4 elastically contacts the inner surface of the lip portion 9.

[0008] Further, a low specific gravity sponge material 11 having a specific gravity of 0.05 to 0.4 is provided on the inner surface of the connecting wall 6. The front end portion of the flange portion 2 formed by overlapping the plurality of metal plates elastically contacts the low specific gravity sponge material 11, and the low specific gravity sponge material 11 blocks noise from the overlapping portions of the flange portion 2 from entering the inside of the vehicle.

[0009] Prior Art Documents

[0010] Patent Documents

[0011] Patent Document 1: Japanese Patent Application Publication No. 2009-286280 (see Figure 12 ) SUMMARY

[0012] PROBLEMS TO BE SOLVED BY THE INVENTION

[0013] However, as shown in Figure 2 and Figure 3 , the flange portion 2 is formed by overlapping the plurality of metal plates P1 to P3, but these metal plates are joined by spot welding at intermittent points in the length direction, and in order to improve strength, the joining is performed by a so-called dowel processing method using a press machine. Therefore, as shown in Figure 3 , in terms of structure, the flange portion 2 has a stepped surface 12 in a concave-convex shape on the surface of the inside vehicle side surface 2a.

[0014] Thus, even if the one side surface 8c of the front end portion 8b of the retaining lip 8 protruding from the end portion of the vehicle side wall 4 abuts against the inside vehicle side surface 2a of the flange portion 2 as in the prior art described above, there is a risk that noise d from the outside of the vehicle that has intruded into the inside of the mounting base 3 via the flange portion 2, as shown by the solid arrow in Figure 4 , penetrates and intrudes into the inside of the vehicle through the gap between the concave-convex stepped surface 12 and the one side surface 8c of the retaining lip 8, as shown by the hollow arrow in Figure 4 .

[0015] In other words, the one side surface 8c of the front end portion 8b of the retaining lip 8 cannot deform in close contact following the concave-convex variation of the stepped surface 12 of the flange portion 2, and a gap is generated between the one side surface 8c of the front end portion 8b and the stepped surface 12, and thus there is a risk that noise d penetrates and intrudes into the inside of the vehicle via the gap.

[0016] The present invention addresses the aforementioned technical problems of existing automotive sealing strips and aims to provide an automotive sealing strip in which the front end of the retaining lip flexes and deforms by means of a cut portion following the unevenness of the stepped surface on the outer surface of the flange to absorb the unevenness, and elastically contacts the inner side of the flange in a close fit, thereby suppressing the penetration of noise from the inside of the mounting base into the inner side of the vehicle.

[0017] Methods for solving problems

[0018] The invention described in Scheme 1 of this application is a sealing strip for an automobile, comprising: a mounting base, which is mounted on a flange portion formed by overlapping multiple metal plates along the edge of a door opening of the vehicle body, having an inner sidewall, an outer sidewall, and a connecting wall connecting the two sidewalls; a hollow sealing portion, which is integrally disposed on the outer surface of the mounting base and elastically contacts the door when the door is closed; and a retaining lip, the base end of which is combined with the inner surface of the inner sidewall of the mounting base, and one side of the front end of the retaining lip elastically contacts the inner side of the flange portion, characterized in that a cutout is provided at a position closer to the base end than one side of the front end of the retaining lip, by means of which the front end can be bent to form the front end.

[0019] Invention Effects

[0020] According to the invention described in Scheme 1 of this application, the front end of the retaining lip flexes and deforms by means of the cut portion following the unevenness of the stepped surface of the outer surface of the flange portion to absorb the unevenness, and elastically contacts the inner side of the flange portion in a close fit, thereby suppressing the penetration of noise from the inside of the mounting base into the inner side of the vehicle. Attached Figure Description

[0021] Figure 1 This is a top view of a car to which the present invention and existing automotive sealing strips are applicable.

[0022] Figure 2 This refers to existing automotive weatherstripping. Figure 1 A sectional view along line AA.

[0023] Figure 3 This is a sectional view of the main structure of the flange side of the vehicle body opening.

[0024] Figure 4 This is a schematic diagram illustrating the path of noise intrusion into the vehicle.

[0025] Figure 5 This represents a first embodiment of the automotive sealing strip according to the present invention. Figure 1 A sectional view along line AA.

[0026] Figure 6 yes Figure 5 The image shows an enlarged view of the main components of a car sealing strip.

[0027] Figure 7 This represents a second embodiment of the automotive sealing strip according to the present invention. Figure 1 A sectional view along line AA.

[0028] Figure 8 This is a graph showing the relationship between the contact surface width of the automotive sealing strip relative to the flange and the sound insulation performance, obtained through experiments in this invention.

[0029] Figure 9 This represents the third embodiment of the automotive sealing strip of the present invention. Figure 1 A sectional view along line AA.

[0030] Figure 10 yes Figure 9 The image shows an enlarged view of the main components of a car sealing strip.

[0031] Figure 11 This represents the fourth embodiment of the automotive sealing strip of the present invention. Figure 1 A sectional view along line AA.

[0032] Figure 12 This represents the fifth embodiment of the automotive sealing strip of the present invention. Figure 1 A sectional view along line AA.

[0033] Figure 13 This is a cross-sectional view showing the automotive sealing strip of the fifth embodiment detached from the flange.

[0034] Figure 14 This represents the sixth embodiment of the automotive sealing strip of the present invention. Figure 1 A sectional view along line AA. Detailed Implementation

[0035] Hereinafter, various embodiments of the automotive sealing strip according to the present invention will be described based on the accompanying drawings. This sealing strip, like the conventional sealing strip described above, is suitable for installation onto the periphery of the door opening of the front door of a vehicle body.

[0036] Figure 5 This represents a first embodiment of the automotive sealing strip according to the present invention. Figure 1 AA-line sectional view, Figure 6 yes Figure 5 The image shows an enlarged view of the main components of a car sealing strip.

[0037] As mentioned above, the sealing strip 21 is installed on the flange 2, which runs along... Figure 1The periphery of the body opening 03 of the front door 02 of the automobile 01 is formed. This flange portion 2 is, for example, formed by overlapping three metal plates P1 to P3, joined by intermittent spot welding in the longitudinal direction, and joined by press folding. Thus, the flange portion 2 is formed with a concave-convex stepped surface 12, for example, on the inner side surface 2a.

[0038] Further, the seal strip 21 of the first embodiment has, as shown in Figure 5 and Figure 6 FIG. 1, a mounting base portion 22 in the shape of an inverted U, which is inserted into and fitted to the flange portion 2, having an inner side wall 23, an outer side wall 24, and a connecting wall 25 connecting the two walls 23 and 24, and a hollow seal portion 26 of sponge material, which is integrally provided on the outer surface of the outer side wall 24 of the mounting base portion 22, for example, to be in elastic contact with the periphery of the front door 02 when the front door 02 is closed.

[0039] In order to ensure rigidity, the mounting base portion 22 is integrally formed of a hard rubber material or a hard resin material, with a core material 22a in the shape of a U in cross section embedded therein. Further, the mounting base portion 22 is integrally provided with three protrusion portions 24a, 24b, and 24c on the inner surface of the outer side wall 24, which abut against the outer side surface of the flange portion 2, and a retaining lip 27 is provided projecting toward the outer side wall 24 at the lower end of the inner surface of the inner side wall 23.

[0040] As shown in Figure 6 , the base end portion 27a of the retaining lip 27 is joined to the lower end of the inner surface of the inner side wall 23, and the side surface 27c of the front end portion 27b is in elastic contact with the inner side surface 2a of the flange portion 2. The inner surfaces of the protrusion portions 24a to 24c and the side surface 27c of the front end portion 27b of the retaining lip 27 are in elastic contact with and retain the mounting base portion 22 in a sandwiched state with the inner side surface 2a and the outer side surface 2b of the flange portion 2.

[0041] Further, a lip portion 28 extending toward the inner side is integrally provided between the connecting wall 25 and the inner side wall 23 of the mounting base portion 22, and the outer end of an interior trim panel or a decorative strip, etc., interior decorative member 10 extending from the inner side toward the inner side wall 23 is in elastic contact with the inner surface of the lip portion 28.

[0042] Further, as shown in Figure 5 and Figure 6As shown, the retaining lip 27 has a cutout 29 located below one side 27c of the front end portion 27b, i.e., near the base end portion 27a. This cutout 29 is formed in a cut-in shape along the periphery of the body opening 03 of the retaining lip 27, i.e., along its length. Thus, the front end portion 27b can freely flex and deform towards the flange portion 2 via this cutout 29, and one side 27c of the front end portion 27b flexes and deforms following the unevenness of the stepped surface 12 of the inner side surface 2a of the flange portion 2, thereby absorbing the unevenness and elastically contacting the inner side surface 2a of the flange portion 2 in a close fit.

[0043] (Based on the effect of the sealing strip in this embodiment)

[0044] The sealing strip 21 according to this embodiment, which is composed of the above structure, is as follows: Figure 5 and Figure 6 As shown, when the flange portion 2, which is located at the periphery of the vehicle body opening 03, is inserted and fitted into the mounting base 22, when one side 27c of the front end portion 27b of the retaining lip 27 abuts against the inner side 2a of the flange portion 2, the cut portion 29 opens by means of its reaction force. One side 27c of the front end portion 27b follows the concave-convex step surface 12 of the inner side 2a of the flange portion 2 and flexes and deforms, and elastically contacts the flange portion 2 in a tightly fitted state with a matching shape and a uniform and constant abutment area.

[0045] In this way, the front end 27b of the retaining lip 27 opens with the cutout 29, and one side 27c elastically contacts the stepped surface 12 of the inner side 2a of the flange 2 in a matching shape. That is, even if there are irregularities on the inner side 2a of the flange 2, one side 27c will elastically contact in a state that absorbs these irregularities. Therefore, the generation of gaps between the inner side 2a of the flange 2 and one side 27c of the front end 27b of the retaining lip 27 can be sufficiently suppressed.

[0046] As a result, Figure 4 As shown by the hollow arrow, noise d, i.e., transmitted sound, entering the interior of the mounting base 22 from the outside of the flange 2 can be fully blocked by one side 27c of the front end 27b of the retaining lip 27, thereby effectively suppressing the intrusion of transmitted sound into the vehicle.

[0047] Furthermore, when a force is applied to the mounting base 22 of the sealing strip 21 in the direction of disengagement from the flange 2, the cutout 29 closes and generates a reaction force, keeping the front end 27b of the lip 27 pressed against the inner side 2a of the flange 2. Thus, the mounting base 22 becomes difficult to easily detach from the flange 2.

[0048] [Second Implementation]

[0049] Figure 7 A second embodiment of the present application is shown, with the basic structure of the presence of the cutout portion 29 of the first embodiment as a premise, the contact surface width W of the one side surface 27c of the front end portion 27b of the retaining lip 27 with respect to the vehicle interior side surface 2a of the flange portion 2 is set to a range of about 2 mm to about 6 mm.

[0050] Figure 8 is a graph obtained by the inventor of the present application after various experiments on the relationship between the contact surface width W (sealing width) of the one side surface 27c of the front end surface 27b of the retaining lip 27 with respect to the vehicle interior side surface 2a of the flange portion 2 and the sound insulation performance, the vertical axis represents the transmission sound pressure level SPL (dB-A), and the horizontal axis represents the contact surface width W (mm).

[0051] From the experiment, the greater the contact surface width W of the one side surface 27c, the lower the transmission sound pressure level SPL (optimization), and the smaller the contact surface width W, the higher the transmission sound pressure level SPL (deterioration). That is, according to the experiment, in the case where the contact surface width W is, for example, 2.0 mm or less, the transmission sound pressure level SPL becomes high, and the sound insulation performance deteriorates, and in the case where the contact surface width W is 2.0 mm or more, the sound insulation performance becomes high, however, when the contact surface width W is, for example, 6.0 mm as a critical value, greater than this value, this time, when the mounting base portion 22 is inserted into the flange portion 2, the frictional resistance of the retaining lip 27 against the vehicle interior side surface 2a of the flange portion 2 becomes large, the insertion force increases, and the assembly performance of the sealing strip 21 with respect to the flange portion 2 deteriorates.

[0052] Thus, from the results of the experiment by the inventor, if the contact surface width W is set to a range of 2.0 mm to 6.0 mm, good assembly performance of the sealing strip 21 (mounting base portion 22) with respect to the flange portion 2 can be ensured and high sound insulation performance can be obtained. Therefore, in the present embodiment, the contact surface width W is set to a range of 2.0 mm to 6.0 mm. However, if the assembly performance of the sealing strip 21 with respect to the flange portion 2 is emphasized, it is desirable to set the contact surface width W to a range of 2.0 mm to 3.0 mm.

[0053] [Third Embodiment]

[0054] Figure 9 and Figure 10 A third embodiment of the present application is shown, with the structure of the second embodiment as a premise, in the present embodiment, the entire outer surface including the one side surface 27c from the cutout portion 29 of the front end portion 27b of the retaining lip 27, and the area from the upper surface of the retaining lip 27 to the vicinity of the base end portion 27a are all covered with a soft sponge rubber material 30.

[0055] The soft sponge rubber material 30 is formed of a sponge rubber material having a specific gravity of 0.4 to 0.7. In addition, the contact surface width W of the one side surface 27c of the front end portion 27b of the holding lip 27 with respect to the vehicle interior side surface 2a of the flange portion 2 is set, for example, in a range of 2.0 mm to 6.0 mm, and preferably in a range of 2.0 mm to 3.0 mm.

[0056] According to the third embodiment, therefore, since the one side surface 27c of the front end portion 27b of the holding lip 27 is covered with the soft sponge rubber material 30, when the one side surface 27c is in elastic contact with the vehicle interior side surface 2a of the flange portion 2, in combination with the effect of the cutout portion 29, the soft sponge rubber material 30 can more flexibly follow the shape of the concave-convex stepped surface 12 of the vehicle interior side surface 2a and elastically contact in conformity with the shape. That is, since the concave-convex stepped surface 12 is effectively absorbed by the soft sponge rubber material 30, the generation of a gap between the one side surface 27c of the front end portion 27b and the vehicle interior side surface 2a can be more effectively suppressed. Thus, the propagation of noise from the inside of the mounting base 22 through the holding lip 27 can be sufficiently suppressed.

[0057] In addition, as described above, the contact surface width W of the soft sponge rubber material 30 at the one side surface 27c of the front end portion 27b with respect to the vehicle interior side surface 2a of the flange portion 2 is set in a range of 2.0 mm to 6.0 mm, and therefore, the good assembly performance of the weather strip 21 (mounting base 22) with respect to the flange portion 2 can be ensured, and high sound insulation performance can be obtained.

[0058] [Fourth Embodiment]

[0059] Figure 11 A fourth embodiment of the present application is shown, which is premised on the structure of the first embodiment, and a second holding lip 31 of a sponge rubber material is provided at a position closer to the base end portion 27a than the front end portion 27b of the holding lip 27, and the second holding lip 31 abuts against the vehicle interior side surface 2a of the flange portion 2 from a direction opposite to the front end portion 27b when the mounting base 22 is inserted into the flange portion 2.

[0060] The second holding lip 31 has a width dimension L in the width direction of the flange portion 2 formed to be short, and is formed entirely of a sponge rubber material, and the base end portion 31a is combined to a substantially central position in the width direction of the one side surface 27c side of the holding lip 27, and on the other hand, the one side surface 31c of the front end portion 31b is in elastic contact with the vehicle interior side surface 2a of the flange portion 2 in a direction opposite to the one side surface 27c of the front end portion 27b of the holding lip 27, that is, in a state of being "crisscrossed" with each other. Therefore, the second holding lip 31 has a width dimension L in the direction of the flange portion 2 formed to be short, and also has a cross-sectional width formed to be thinner than the cross-sectional width of the holding lip 27.

[0061] Thus, according to the present embodiment, when the mounting base 22 is inserted into the flange portion 2, the side surface 27c of the front end portion 27b of the holding lip 27 and the side surface 31c of the front end portion 31b of the second holding lip 31 double- abut (elastically contact) the vehicle interior side surface 2a of the flange portion 2 from opposite directions. Therefore, the soundproofing effect from the inside of the mounting base 22 to the vehicle interior is increased, and in particular, since the second holding lip 31 is formed entirely of a sponge rubber material, it deforms in compliance with the recessed and protruded stepped surface 12 of the vehicle interior side surface 2a of the flange portion 2, thereby absorbing the step difference, and thus, the soundproofing effect is also increased.

[0062] In addition, in the present embodiment, since the holding lip 27 and the second holding lip 31 elastically contact the vehicle interior side surface 2a of the flange portion 2, the mounting base 22 can be stably and securely held, and even with respect to a force in the direction of detachment of the mounting base 22, a reaction force resistance can be generated, and unintended detachment can be suppressed. However, since the second holding lip 31 is formed entirely of a sponge rubber material, when the mounting base 22 is inserted into the flange portion 2, a large frictional resistance does not occur, and thus, a large impact on the assembly performance does not occur.

[0063] [Fifth Embodiment]

[0064] Figure 12 A fifth embodiment of the present application is shown, which differs from the first embodiment in that the structure of the front end portion 27b of the holding lip 27 is changed.

[0065] That is, as shown in Figure 12 the front end portion 27b of the holding lip 27 is formed so as to extend in the direction of the vehicle exterior side wall 24, the entire side surface 27c including the front end portion 27b is formed of a sponge rubber material, and the cutout portion 29 is formed at a central portion of the front end portion 27b that is not formed of a sponge rubber material, toward the base end portion 27a.

[0066] That is, the front end portion 27b is formed entirely of a sponge rubber material, and the cutout portion 29 is formed at a central portion of the front end portion 27b that is formed of a hard rubber material or a hard resin material, toward the base end portion 27a.

[0067] Therefore, according to this embodiment, when the mounting base 22 is inserted into the flange 2, the front end portion 27b of the retaining lip 27 bends from the cutout portion 29, and one side 27c of the longer portion of the front end portion 27b is in elastic contact with the interior side surface 2a of the vehicle. That is, since one side 27c of the front end portion 27b, which is the longer portion of the sponge rubber material, is in elastic contact with the interior side surface 2a of the vehicle, the contact surface width W1 (sealing width) relative to the flange 2 is further increased. Therefore, one side 27c of the front end portion 27b of the sponge rubber material effectively absorbs the stepped surface 12 of the interior side surface 2a of the flange 2, suppressing the formation of gaps, and thus significantly improving sound insulation performance. Furthermore, the longer front end portion 27b can be bent by means of the cutout portion 29, therefore, as... Figure 12 As shown, when the mounting base 22 is inserted into the flange 2, the front end 27b bends, and the frictional sliding resistance between one side 27c and the inner side 2a of the flange 2 is reduced. This achieves both improved sound insulation performance and improved assembly performance of the mounting base.

[0068] Furthermore, such as Figure 13 As shown, when a force is applied in the direction that causes the mounting base 22 to detach from the flange 2, the front end 27b bends from the cut-out portion 29, and the longer side 27c comes into contact with the inner side 2a of the flange 2 as a whole. Therefore, the frictional resistance increases, which can suppress movement in the detachment direction.

[0069] [Sixth Embodiment]

[0070] Figure 14 The sixth embodiment of the present invention is shown in the figure, in which a second retaining lip 32 is provided at the lower end of the inner side wall 23 of the mounting base 22 and is arranged parallel to the retaining lip 27.

[0071] That is, such as Figure 14 As shown, the base end portion 27a of the retaining lip 27 is attached to the approximate center position in the vertical direction of the inner side wall 23 of the vehicle, and the front end portion 27b is in elastic contact with the upper end portion of the inner side surface 2a of the flange portion 2 via the cutout portion 29.

[0072] On the other hand, the second retaining lip 32 is formed entirely of sponge rubber material, the base end 32a is combined with the lower end of the inner side wall 23, and the front end 32b is formed to be approximately the same length as the front end 27b of the retaining lip 27, and one side 32c of the front end 32b is in elastic contact with the inner side 2a of the flange 2.

[0073] According to this sixth embodiment, since the second retaining lip 32 is entirely formed of sponge rubber material, therefore, as Figure 14As shown, when the mounting base 22 is inserted into the flange 2, the elastic reaction force of the second retaining lip 32 is small, and the frictional sliding resistance on the inner side 2a of the vehicle comes almost entirely from the front end 27b of the retaining lip 27. Therefore, the impact on the assembly operation of the mounting base 22 is minimal. Moreover, the sound transmitted into the interior of the mounting base 22 is blocked by the double sound insulation lips of the retaining lip 27 and the second retaining lip 32, thus effectively limiting the propagation of noise into the vehicle interior.

[0074] In particular, since the second retaining lip 32 is entirely formed of sponge rubber material, as mentioned above, it is possible to improve the assembly performance of the mounting base 22, and the sound insulation effect is further enhanced by optimizing the conformability of the concave-convex stepped surface 12 of the inner side surface 2a of the flange 2.

[0075] The present invention is not limited to the structures of the above embodiments. The applicable part of the sealing strip 21 can be the periphery of the body opening of the trunk door, in addition to the body opening of the front door.

[0076] Furthermore, the shape, size, and height of the retaining lip 27 can be further modified depending on the application location and specifications of the sealing strip 21. Additionally, regarding the material of the retaining lip 27, other soft rubber or soft resin materials can be used, as long as they can absorb the uneven stepped surface 12 of the inner side 2a of the flange portion 2 to suppress the generation of gaps.

[0077] Explanation of reference numerals in the attached figures

[0078] 01…Cars

[0079] 02…Front door

[0080] 03… Body opening

[0081] 1… Existing automotive weatherstripping

[0082] 2…Flange section

[0083] 2a…inner side of the vehicle

[0084] 2b…Outer side of the vehicle

[0085] 12… Stepped surface

[0086] 21…Automotive sealing strips

[0087] 22… Installation base

[0088] 23…inner sidewalls of the vehicle

[0089] 24…Outer sidewall of the vehicle

[0090] 25…connecting wall

[0091] 26 … hollow seal portion

[0092] 27 … holding lip

[0093] 27a … base end portion

[0094] 27b … front end portion

[0095] 27c … one side surface

[0096] 29 … cutout portion

[0097] 30 … soft sponge rubber material

[0098] 31 … second holding lip

[0099] 31a … base portion

[0100] 31b … front end portion

[0101] 31c … one side surface

[0102] 32 … second holding lip

[0103] 32a … base end portion

[0104] 32b … front end portion

[0105] 32c … one side surface

Claims

1. A sealing strip for automobiles, comprising: Mounting base, which is mounted on a flange formed by multiple overlapping metal plates along the edge of the door opening of the vehicle body, has an inner side wall, an outer side wall, and a connecting wall connecting the inner side wall and the outer side wall; hollow sealing part, which is integrally disposed on the outer surface of the mounting base and elastically contacts the door when the door is closed; And a retaining lip, the base end of which engages with the inner surface of the inner sidewall of the mounting base, and one side of the front end of the retaining lip elastically contacts the inner sidewall of the flange, characterized in that, A cut is provided at a position closer to the base end than the front end of the retaining lip, by means of which the front end can be flexibly formed.

2. The automotive sealing strip as described in claim 1, characterized in that, For one side of the front end of the retaining lip, the width of the contact surface when it elastically contacts the inner side of the flange is set in the range of about 2.0 mm to 6.0 mm.

3. The automotive sealing strip as described in claim 1, characterized in that, At least one side of the front end of the retaining lip is covered with a soft sponge rubber material.

4. The automotive sealing strip as described in claim 1, characterized in that, A second retaining lip made of sponge rubber is provided at a position closer to the base end than the front end of the retaining lip. When the mounting base is inserted and fitted into the flange, the second retaining lip abuts against the inner side of the flange from the opposite direction to the front end.

5. The automotive sealing strip as described in claim 1, characterized in that, The front end of the retaining lip extends toward the outer sidewall of the vehicle, at least one side of the front end is covered with a sponge rubber material, and the cut-out portion is formed at the base end of the front end that is not covered with sponge rubber material.

6. The automotive sealing strip as described in claim 1, characterized in that, The retaining lip is provided approximately at the center of the inner surface of the inner side wall of the mounting base in the width direction, and a second retaining lip made of sponge rubber material is provided at the end of the inner side wall opposite to the connecting wall, so as to provide a double seal for the inner side of the flange.

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