Weather strip for automobile

Abstract

To provide a weather strip for an automobile which can suppress permeation / invasion of noise from the inside of a mounting base section to an in-vehicle side by bringing a tip of a holding lip into elastic contact with an in-vehicle side inside surface of a flange section in a close adhesion state through a notch section.SOLUTION: A weather strip includes: a mounting base section 22 which is mounted in a flange section 2 made by overlapping a plurality of metal panels formed along a door opening edge of a vehicle body and has a vehicle inside side wall 23, a vehicle outside side wall 24, and a connection wall 25 for connecting both of the side walls; a hollow seal section 26 which is provided integrally with an external surface of the mounting base section and is brought into elastic contact with a door; and a holding lip 27 in which a base end section 27a is connected to an internal surface of the vehicle inside side wall and one side face 27c of a tip 27b is brought into elastic contact with the vehicle inside side face 2a of the flange section. A notch section 29 is provided at a position on the base end section side of the one side face of the tip of the holding lip. The tip is formed to be bendable through the notch section.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present invention relates to a weather strip for an automobile that is attached to the periphery of a door opening on the side of a vehicle body and elastically contacts the door to seal the interior and exterior of the vehicle. [Background technology]

[0002] A known example of this type of conventional weather strip for an automobile (hereinafter simply referred to as a weather strip) for a door opening is that described in Patent Document 1 below.

[0003] FIG. 1 is a perspective view of an automobile to which the present invention and a conventional automotive weatherstrip are applied, FIG. 2 is a cross-sectional view taken along line AA in FIG. 1 showing the conventional automotive weatherstrip, FIG. 3 is a cross-sectional view of a key portion showing the structure of the flange side of an opening in a vehicle body, and FIG. 4 is a schematic diagram showing the path of noise entering the vehicle interior.

[0004] The weatherstrip 1 described in this publication is attached to a flange portion 2 formed by overlapping multiple metal panels P1-P3 formed along the periphery of a body opening 03 of an automobile 01, for example, a front door 02, as shown in Figures 1 to 3.

[0005] As shown in Figure 2, this weatherstrip 1 has an inverted U-shaped mounting base 3 that is inserted and fitted into the tip of the flange portion 2 and has an interior side wall 4, an exterior side wall 5, and a connecting wall 6 that connects both side walls 4, 5, and a hollow seal portion 7 made of sponge rubber that is integrally formed on the outer surface of the exterior side wall 5 of the mounting base 3 and that elastically contacts the peripheral portion of the front door 02 when the front door 02 is closed.

[0006] The mounting base 3 has a U-shaped core 3a embedded therein, and three protrusions 5a, 5b, 5c that come into contact with the vehicle-exterior side surface of the flange portion 2 are integrally provided on the inner surface of the vehicle-exterior side wall 5. Meanwhile, a holding lip 8 is provided on the inner surface of the lower end portion of the vehicle-interior side wall 4 opposite the connecting wall 6, and protrudes toward the vehicle-exterior side wall 5. The holding lip 8 has a base end 8a connected to the lower end portion of the vehicle-interior side wall 4, and one side surface 8c of a tip end 8b that is in elastic contact with the vehicle-interior side surface 2a of the flange portion 2. The protrusions 5a to 5c and the holding lip 8 come into contact with both side surfaces 2a, 2b of the flange portion 2 in a sandwiched state, thereby holding 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 interior side wall 4. The inner surface of this lip portion 9 is elastically contacted with the outer end of an interior material 10 such as a door trim or garnish that extends from the inside of the vehicle toward the interior side wall 4.

[0008] Furthermore, a low-density sponge material 11 having a specific gravity of 0.05 to 0.4 is provided on the inner surface of the connecting wall 6, with which the tip of the flange portion 2 formed by overlapping the multiple metal panels comes into elastic contact, and this low-density sponge material 11 is adapted to block noise that may enter the vehicle interior through the overlapping parts of the flange portion 2. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] JP 2009-286280 A (see FIG. 12) Summary of the Invention [Problem to be solved by the invention]

[0010] 2 and 3, the flange portion 2 is formed by overlapping a plurality of metal panels P1 to P3, which are joined in the longitudinal direction by intermittent spot welding or the like, and in order to increase strength, are often joined by a so-called joggle processing method using a press machine. Therefore, due to its structure, the flange portion 2 is prone to have an uneven step surface 12 on the surface of the inside side surface 2a of the vehicle, as shown in FIG.

[0011] Therefore, even if one side 8c of the tip 8b of the retaining lip 8 protruding from the end of the interior side wall 4 abuts against the interior side surface 2a of the flange portion 2 as in the conventional technology, noise d that has entered the inside of the mounting base 3 from outside the vehicle via the flange portion 2, as shown by the solid arrow in Figure 4, may penetrate into the interior of the vehicle through the gap between the uneven step surface 12 and one side surface 8c of the retaining lip 8, as shown by the solid arrow in Figure 4.

[0012] In other words, the retaining lip 8 is unable to conform to the uneven changes in the step surface 12 of the flange portion 2 and deform in a tight fit, as a gap is generated between the side surface 8c of the tip portion 8b and the step surface 12, which may allow noise d to penetrate into the inside of the vehicle through the gap.

[0013] The present invention has been devised in consideration of the technical problems associated with the conventional automotive weatherstrips described above, and aims to provide an automotive weatherstrip that can suppress the transmission and intrusion of noise from inside the mounting base to the inside of the vehicle by having the tip of the retaining lip flexibly deform via the notch portion to follow the uneven changes in the stepped surface on the outer surface of the flange portion, absorbing the unevenness and elastically contacting in a tight contact with the inside side of the flange portion. [Means for solving the problem]

[0014] The invention described in claim 1 of the present application is a weather strip for an automobile comprising: a mounting base attached to a flange portion formed by overlapping a plurality of metal panels formed along the edge of a door opening of a vehicle body, and having an interior side wall, an exterior side wall, and a connecting wall connecting both side walls; a hollow seal portion integrally formed on the outer surface of the mounting base and elastically contacting the door when the door is closed; and a retaining lip having a base end joined to the inner surface of the interior side wall of the mounting base and one side of a tip end elastically contacting the interior side of the flange portion, wherein a notch portion is provided at a position closer to the base end than one side of the tip end of the retaining lip, and the tip end is formed to be bendable via the notch portion. Effect of the Invention

[0015] According to the invention described in claim 1 of the present application, the tip of the retaining lip flexes and deforms via the notch portion in response to changes in the unevenness of the stepped surface on the outer surface of the flange portion, absorbing the unevenness and elastically contacting the interior side of the flange portion in a tight contact state, thereby suppressing the transmission and intrusion of noise from inside the mounting base to the interior of the vehicle. [Brief description of the drawings]

[0016] [Figure 1] 1 is an overhead view of an automobile to which the present invention and a conventional automobile weather strip are applied; [Diagram 2] FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, showing a conventional weather strip for an automobile. [Diagram 3] 4 is a cross-sectional view of a main portion showing the structure of a flange portion side of a vehicle body opening. FIG. [Figure 4] FIG. 2 is a schematic diagram showing paths of noise entering a vehicle interior. [Diagram 5] 2 is a cross-sectional view taken along line AA in FIG. 1, showing a first embodiment of an automotive weather strip according to the present invention. [Figure 6] FIG. 6 is an enlarged view of a main portion of the automotive weather strip shown in FIG. 5. [Figure 7] FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, showing a second embodiment of an automotive weather strip according to the present invention. [Figure 8]4 is a graph showing experimental results of the relationship between the contact surface width with respect to the flange portion of the weather strip for an automobile according to the present invention and sound insulation. [Figure 9] FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, showing a third embodiment of a weather strip for an automobile according to the present invention. [Figure 10] FIG. 10 is an enlarged view of a main portion of the automotive weather strip shown in FIG. [Figure 11] FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, showing a fourth embodiment of a weather strip for an automobile according to the present invention. [Figure 12] FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, showing a fifth embodiment of a weather strip for an automobile according to the present invention. [Figure 13] FIG. 11 is a cross-sectional view showing a state in which the automotive weather strip of the fifth embodiment is coming out of a flange portion. [Figure 14] FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, showing a sixth embodiment of a weather strip for an automobile according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Hereinafter, various embodiments of the weather strip for an automobile according to the present invention will be described with reference to the drawings. This weather strip is applied to a vehicle body, which is attached to the periphery of a door opening of a front door, like the conventional weather strip.

[0018] FIG. 5 is a cross-sectional view taken along line AA in FIG. 1, showing a first embodiment of an automotive weatherstrip according to the present invention, and FIG. 6 is an enlarged view of a main portion of the automotive weatherstrip shown in FIG.

[0019] As described above, the weatherstrip 21 is attached to the flange portion 2 formed along the periphery of the vehicle body opening 03 of the front door 02 of the automobile 01 shown in Fig. 1. This flange portion 2 is formed, for example, by overlapping three metal panels P1 to P3 and joining them intermittently in the longitudinal direction by spot welding and by using a joggle machining method. Therefore, the flange portion 2 has an uneven step surface 12 formed on, for example, the vehicle interior side surface 2a. As shown in Figures 5 and 6, the weather strip 21 of the first embodiment has an inverted U-shaped mounting base 22 that is inserted and fitted into the flange portion 2 and has an interior side wall 23, an exterior side wall 24, and connecting walls 25 that connect both side walls 23, 24, and a hollow sealing portion 26 made of sponge material that is integrally formed on the outer surface of the exterior side wall 24 of the mounting base 22 and that elastically contacts the peripheral portion of the front door 02 when the front door 02 is closed, for example.

[0020] The mounting base 22 is integrally formed from a hard rubber material or a hard resin material to ensure rigidity, and has a core material 22a with a U-shaped cross section embedded therein. The mounting base 22 is also provided with three protrusions 24a, 24b, 24c integrally formed with the inner surface of the vehicle-exterior side wall 24, which abut against the vehicle-exterior side surface of the flange portion 2, and a retaining lip 27 is provided at the lower end of the inner surface of the vehicle-interior side wall 23 in the figure to protrude toward the vehicle-exterior side wall 24.

[0021] 6, the retaining lip 27 has a base end 27a joined to the inner lower end of the interior side wall 23, and one side 27c of the tip end 27b in elastic contact with the interior side surface 2a of the flange portion 2. The inner surfaces of the protrusions 24a to 24c and one side surface 27c of the tip end 27b of the retaining lip 27 elastically contact the interior side surface 2a and the exterior side surface 2b of the flange portion 2 in a sandwiched state, thereby retaining the mounting base 22.

[0022] Furthermore, a lip portion 28 extending toward the inside of the vehicle is integrally provided between the connecting wall 25 of the mounting base 22 and the interior side wall 23. The inner surface of this lip portion 28 is elastically contacted with the outer end portion of the interior material 10, such as a door trim or garnish, which extends from the inside of the vehicle toward the interior side wall 23.

[0023] 5 and 6, the retaining lip 27 is provided with a notch 29 at a position lower than one side surface 27c of the tip portion 27b, i.e., closer to the base end portion 27a. This notch 29 is formed in a cut shape along the longitudinal direction, which is the circumferential direction of the vehicle body opening 03, of the retaining lip 27. Therefore, the tip portion 27b can be freely flexibly deformed toward the flange portion 2 via this notch 29, and one side surface 27c of the tip portion 27b flexibly deforms in accordance with the unevenness of the step surface 12 of the vehicle interior side surface 2a of the flange portion 2, thereby elastically contacting the vehicle interior side surface 2a of the flange portion 2 in a tight contact state while absorbing the unevenness. [Functions and Effects of the Weather Strip According to the Present Embodiment] As shown in Figures 5 and 6, when the weather strip 21 of this embodiment having the above-mentioned configuration is attached by inserting and fitting the mounting base 22 into the flange portion 2 having the periphery of the vehicle body opening 03, when one side 27c of the tip portion 27b of the retaining lip 27 abuts against the interior side surface 2a of the flange portion 2, the reaction force opens the notch portion 29 and the one side surface 27c of the tip portion 27b flexes and deforms to conform to the uneven step surface 12 of the interior side surface 2a of the flange portion 2, fitting closely and elastically contacting the vehicle with a uniform and constant contact area.

[0024] In this way, the tip 27b of the retaining lip 27 opens via the notch portion 29, and the one side surface 27c elastically contacts the step surface 12 of the interior side surface 2a of the flange portion 2 in a manner that conforms to the step surface 12. In other words, even if unevenness occurs on the interior side surface 2a of the flange portion 2, the one side surface 27c elastically contacts the step surface 12 in a state that absorbs the uneven shapes. Therefore, the occurrence of a gap between the interior side surface 2a of the flange portion 2 and the one side surface 27c of the tip 27b of the retaining lip 27 can be sufficiently suppressed.

[0025] As a result, as shown by the white arrow in Figure 4, the transmitted sound, which is noise d that has entered the inside of the mounting base 22 from the outside of the flange portion 2, is sufficiently blocked by one side 27c of the tip portion 27b of the retaining lip 27, making it possible to effectively suppress the intrusion of the transmitted sound toward the interior of the vehicle.

[0026] When a force acts on the mounting base 22 of the weatherstrip 21 in a direction in which it comes out of the flange portion 2, the notch portion 29 closes and a reaction force is generated at the tip portion 27b of the retaining lip 27, causing the tip portion 27b to be pressed against the vehicle interior side surface 2a of the flange portion 2. Therefore, it becomes difficult for the mounting base 22 to easily come out of the flange portion 2. Second Embodiment FIG. 7 shows a second embodiment of the present invention, in which, assuming the basic structure of the first embodiment such as the presence of the notch portion 29, the contact surface width W when one side surface 27c of the tip portion 27b of the retaining lip 27 elastically contacts the vehicle interior side surface 2a of the flange portion 2 is set within the range of approximately 2 mm to approximately 6 mm.

[0027] FIG. 8 is a graph showing the results of various experiments conducted by the inventors of the present application on the relationship between the contact surface width W (sealing width) of one side 27c of the tip 27b of the retaining lip 27 with the interior side 2a of the flange portion 2 and the sound insulation, with the vertical axis representing the sound transmission level SPL (dB-A) and the horizontal axis representing the contact surface width W (mm).

[0028] From this experiment, it was found that increasing the contact surface width W of the one side surface 27c reduces (improves) the sound transmission level SPL, and decreasing the contact surface width W increases (deteriorates) the sound transmission level SPL. That is, according to the experiment, when the contact surface width W is set to, for example, 2.0 mm or less, the sound transmission level SPL increases and the sound insulation decreases, but when it is set to 2.0 mm or more, the sound insulation increases, but when the contact surface width W is set to, for example, 6.0 mm or more, then when the mounting base portion 22 is inserted and fitted 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 increases, increasing the insertion force, and the assemblability of the weather strip 21 to the flange portion 2 deteriorates.

[0029] Therefore, the results of the inventor's experiments revealed that setting the contact surface width W within the range of 2.0 mm to 6.0 mm can provide high sound insulation while ensuring good attachment of the weatherstrip 21 (mounting base 22) to the flange portion 2. Therefore, in this embodiment, the contact surface width W is set within the range of 2.0 mm to 6.0 mm. However, if importance is attached to the attachment of the weatherstrip 21 to the flange portion 2, it is preferable to set the contact surface width W within the range of 2.0 mm to 3.0 mm. Third Embodiment 9 and 10 show a third embodiment of the present invention. In this embodiment, based on the configuration of the second embodiment, a soft sponge rubber material 30 is coated from the notch portion 29 of the tip portion 27b of the retaining lip 27 to the entire outer surface including one side surface 27c, and from the upper surface of the retaining lip 27 to the vicinity of the base end portion 27a.

[0030] The soft sponge rubber material 30 is made of a sponge rubber material having a specific gravity of 0.4 to 0.7. The contact surface width W of one side surface 27c of the tip portion 27b of the holding lip 27 with the vehicle interior side surface 2a of the flange portion 2 is set within a range of 2.0 mm to 6.0 mm, for example, and is preferably set to 2.0 mm to 3.0 mm.

[0031] Therefore, according to the third embodiment, since the one side surface 27c of the tip portion 27b of the retaining lip 27 is covered with the soft sponge rubber material 30, when the one side surface 27c elastically contacts the vehicle interior side surface 2a of the flange portion 2, the soft sponge rubber material 30 more flexibly follows and deforms to the shape of the uneven step surface 12 of the vehicle interior side surface 2a in combination with the action and effect of the notch portion 29, and elastically contacts in a more familiar manner. In other words, since the uneven step surface 12 is effectively absorbed by the soft sponge rubber material 30, the occurrence of a gap between the one side surface 27c of the tip portion 27b and the vehicle interior side surface 2a can be more effectively suppressed. As a result, the propagation of noise that passes through the retaining lip 27 from inside the mounting base 22 can be sufficiently suppressed.

[0032] Furthermore, the contact surface width W of the soft sponge rubber material 30 on one side 27c of the tip portion 27b with the vehicle interior side surface 2a of the flange portion 2 is set within the range of 2.0 mm to 6.0 mm, as mentioned above, so that high sound insulation is obtained while ensuring good assembly of the weather strip 21 (mounting base 22) with the flange portion 2. [Fourth embodiment] Figure 11 shows a fourth embodiment of the present invention, in which, based on the configuration of the first embodiment, a second retaining lip 31 made of sponge rubber material is provided at a position closer to the base end 27a than the tip end 27b of the retaining lip 27, which abuts against the vehicle interior side surface 2a of the flange portion 2 from the opposite direction to the tip end 27b when the mounting base 22 is inserted and fitted into the flange portion 2.

[0033] The second retaining lip 31 is formed to have a short widthwise length L in the flange portion 2 direction, and is entirely made of sponge rubber, with the base end 31a joined to the retaining lip 27 at approximately the center in the widthwise direction on the side of one side 27c, while the one side 31c of the tip end 31b elastically contacts the vehicle-interior side surface 2a of the flange portion 2 in the opposite direction to the one side 27c of the tip end 27b of the retaining lip 27, that is, in a V-shape. Therefore, the second retaining lip 31 is formed to have a short width L in the flange portion 2 direction, and its cross-sectional width is also formed to be thinner than the cross-sectional width of the retaining lip 27.

[0034] Therefore, according to this embodiment, when the mounting base 22 is inserted and fitted into the flange portion 2, one side surface 27c of the tip portion 27b of the retaining lip 27 and one side surface 31c of the tip portion 31b of the second retaining lip 31 come into doubly abutting (elastically abutting) from opposite directions against the vehicle interior side surface 2a of the flange portion 2. This increases the sound insulation effect from inside the mounting base 22 to the vehicle interior, and in particular, since the second retaining lip 31 is entirely made of sponge rubber material, it flexes and deforms to follow the uneven step surface 12 on the vehicle interior side surface 2a of the flange portion 2, absorbing the steps, thereby increasing the sound insulation effect.

[0035] In this embodiment, the retaining lip 27 and the second retaining lip 31 are in elastic contact with the vehicle interior side surface 2a of the flange portion 2, so that the mounting base 22 can be stably and firmly held, and a reaction resistance is generated against a force in the direction in which the mounting base 22 comes out, preventing the mounting base 22 from coming out accidentally. However, since the second retaining lip 31 is entirely made of sponge rubber material, no significant frictional resistance is generated when the mounting base 22 is inserted and fitted into the flange portion 2, and therefore, there is no significant effect on the ease of assembly.

[0036] Fifth embodiment FIG. 12 shows a fifth embodiment of the present invention, which differs from the first embodiment in that the structure of the tip portion 27b of the holding lip 27 is modified.

[0037] That is, as shown in FIG. 12, the retaining lip 27 has a tip portion 27b extended further toward the vehicle exterior side wall 24 than that of the first embodiment, and the entire tip portion 27b, including one side surface 27c, is formed from sponge rubber material, and a notch portion 29 is formed in the central portion of the tip portion 27b near the base end portion 27a which is not formed from sponge rubber material.

[0038] In other words, the entire tip portion 27b is made of sponge rubber material, but a notch portion 29 is formed in the central area made of hard rubber material or hard resin material closer to the base end portion 27a than the tip portion 27b.

[0039] Therefore, according to this embodiment, when the mounting base 22 is inserted and fitted into the flange 2, the tip 27b of the retaining lip 27 is bent from the notch 29, and the entire one side 27c of the long portion of the tip 27b is elastically contacted with the vehicle interior side 2a. In other words, the entire one side 27c of the tip 27b of the sponge rubber material, which is a long portion, is elastically contacted with the vehicle interior side 2a, so that the contact surface width W1 (seal width) with the flange 2 is further increased. Therefore, the one side 27c of the tip 27b of the sponge rubber material effectively absorbs the step surface 12 of the vehicle interior side 2a of the flange 2 and suppresses the occurrence of a gap, so that the sound insulation is significantly improved. Moreover, since the long tip 27b is bendable by the notch 29, when the mounting base 22 is inserted and fitted into the flange, as shown in FIG. 12, the tip 27b is bent, and the frictional sliding resistance between the one side 27c and the vehicle interior side 2a of the flange 2 is reduced. Therefore, the effects of both improving sound insulation and improving the ease of assembly of the mounting base are achieved.

[0040] Furthermore, as shown in Figure 13, when a force is applied in the direction in which the mounting base 22 is removed from the flange portion 2, the tip portion 27b bends at the notch portion 29 and the entire long side surface 27c abuts against the vehicle interior side surface 2a of the flange portion 2, thereby increasing the frictional resistance and making it possible to suppress movement in the direction in which the mounting base 22 is removed. Sixth Embodiment FIG. 14 shows a sixth embodiment of the present invention, in which a second retaining lip 32 is provided in parallel with the retaining lip 27 at the lower end of the vehicle-interior side wall 23 of the mounting base 22 in the figure.

[0041] That is, as shown in FIG. 14, the retaining lip 27 has a base end 27a connected to the interior side wall 23 at approximately the center position in the vertical direction in the figure, and a tip end 27b elastically contacts the vicinity of the upper end of the interior side surface 2a of the flange portion 2 via a notch portion 29.

[0042] On the other hand, the second retaining lip 32 is formed entirely from sponge rubber material, with its base end 32a joined to the lower end of the interior side wall 23 and its tip end 32b formed to be approximately the same length as the length to the tip end 27b of the retaining lip 27, and one side 32c of the tip end 32b elastically contacting the interior side surface 2a of the flange portion 2.

[0043] According to the sixth embodiment, the second retaining lip 32 is entirely made of sponge rubber, so that when the mounting base 22 is inserted and fitted into the flange portion 2, as shown in Fig. 14, the elastic reaction force of the second retaining lip 32 is small, and the frictional sliding resistance against the vehicle interior side surface 2a is almost only present at the tip portion 27b of the retaining lip 27. This reduces the impact on the assembly work of the mounting base 22. Moreover, the transmitted sound that has entered the inside of the mounting base 22 is blocked by the double sound-proof lips of the retaining lip 27 and the second retaining lip 32, so that it is possible to effectively restrict the flow of noise toward the vehicle interior.

[0044] In particular, since the second retaining lip 32 is formed entirely from sponge rubber material, as described above, the assembly of the mounting base 22 is improved, and the sound-proofing effect is further increased by improving the conformability to the uneven step surface 12 on the vehicle interior side surface 2a of the flange portion 2.

[0045] The present invention is not limited to the configurations of the above-described embodiments, and the weather strip 21 may be applied to the periphery of a back door opening in addition to the front door opening.

[0046] The shape, size, height, etc. of the retaining lip 27 can be further changed depending on the location and specifications of the weather strip 21. The material of the retaining lip 27 can be other soft rubber materials or soft resin materials as long as it can absorb the uneven step surface 12 on the vehicle interior side surface 2a of the flange portion 2 and suppress the occurrence of gaps. [Explanation of symbols]

[0047] 01…Automobiles 02...Front door 03…Body opening 1. Conventional automotive weather strips 2...Flange section 2a…Inside of the vehicle 2b…Outside side of vehicle 12...Step surface 21…Automotive weather strips 22…Mounting base 23…Inside wall of the car 24…Exterior side wall 25…Connecting wall 26…Hollow seal part 27…Retaining lip 27a...Proximal end 27b...Tip 27c…one side 29…Notch 30...Soft sponge rubber material 31…Second retaining lip 31a...Base 31b...Tip 31c…one side 32…Second retaining lip 32a...Proximal end 32b...Tip 32c…one side

Claims

1. A weather strip for an automobile comprising: a mounting base attached to a flange formed by overlapping a plurality of metal panels formed along an edge of a door opening of a vehicle body, the mounting base having an interior side wall, an exterior side wall, and a connecting wall connecting the both side walls; a hollow seal portion integrally provided on an outer surface of the mounting base and elastically contacting the door when the door is closed; and a retaining lip having a base end connected to an inner surface of the interior side wall of the mounting base and one side surface of a tip end elastically contacting the interior side surface of the flange portion, A weather strip for an automobile, characterized in that a notch portion is provided at a position closer to the base end than one side surface of the tip portion of the retaining lip, and the tip portion is formed to be bendable via the notch portion.

2. 2. The weather strip for an automobile according to claim 1, A weather strip for an automobile, characterized in that one side surface of the tip portion of the retaining lip has a contact surface width set within a range of approximately 2.0 mm to 6.0 mm when in elastic contact with the vehicle interior side surface of the flange portion.

3. 2. The weather strip for an automobile according to claim 1, A weather strip for an automobile, characterized in that at least one side surface of the tip portion of the retaining lip is covered with a soft sponge rubber material.

4. 2. The weather strip for an automobile according to claim 1, a second retaining lip portion made of sponge rubber material is provided at a position from the tip portion of the retaining lip toward the base end portion, the second retaining lip portion being in contact with the interior side of the flange portion from the opposite direction to the tip portion when the mounting base portion is inserted and fitted to the flange portion.

5. 2. The weather strip for an automobile according to claim 1, The retaining lip has a tip portion extending toward the vehicle exterior side wall, at least one side of the tip portion is covered with sponge rubber material, and the notch portion is formed near the base end portion of the tip portion that is not covered with sponge rubber material.

6. 2. The weather strip for an automobile according to claim 1, a second retaining lip made of sponge rubber material is provided at an end of the interior side wall of the mounting base opposite the connecting wall, and the interior side of the flange portion is doubly sealed by the retaining lip and the second retaining lip.

Images