JP6429524B2 - Door weather strip - Google Patents

Description

  The present invention relates to an improvement in a door weather strip that is mounted around the inside of a vehicle door and ensures airtightness and watertightness between the vehicle interior and exterior when the door is closed.

  As a door weather strip of this type, for example, as described in Patent Document 1, apart from a hollow seal lip on the indoor side, a tongue-like vehicle inner side seal lip is provided on the outdoor side of the indoor side hollow seal lip. There are known ones that are provided so as to be aligned with the outside seal lip. And according to this structure, even if some variation arises in the building of a door, it is supposed that the malfunction accompanying the fall of a sealing performance or increase in a door closing force can be avoided.

JP 2002-67702 A

  However, in the door weather strip described in Patent Document 1, since the tongue-like vehicle interior seal lip and vehicle exterior seal lip are both bent toward the same vehicle exterior when the door is closed, the vehicle exterior seal lip The top part of the car interior seal lip overlaps with the base part of the vehicle so that they interfere with each other. For this reason, the vehicle inner seal lip and the vehicle outer seal lip rub against each other when the vehicle travels, and there is a problem that an abnormal noise (rubbing sound) similar to a squeak noise is generated.

  Therefore, in order to avoid interference between the two seal lips as described above, it is effective to widen the gap between the seal lips. For example, if the position of the vehicle interior seal lip is moved to the vehicle interior, the hollow seal lip and On the other hand, if the position of the vehicle outer seal lip is moved to the vehicle outer side, the vehicle outer seal lip protrudes from the parting part formed by the vehicle body and the door when the door is closed, resulting in a deterioration in the appearance quality. There is. For this reason, it is not realistic to increase the distance between the vehicle interior seal lip and the vehicle exterior seal lip.

  Further, as a means for avoiding the interference between both the seal lips as described above, it is possible to reduce (thin) the thickness of each seal lip. In addition to the risk of sound insulation being reduced, there is a possibility that part of the seal lip will be sucked out from the parting part, especially when traveling at high speeds. Can not.

  The present invention has been made paying attention to such a problem. In addition to the hollow seal lip on the indoor side, the inside seal lip and the vehicle exterior seal lip are formed on the outdoor side of the indoor hollow seal lip. Provided is a door weather strip structure that is designed so that the vehicle inner seal lip and the vehicle outer seal lip do not interfere with each other when the door is closed on the premise that the seal lip coexists.

According to a first aspect of the present invention, there is provided a door weather strip that is mounted around a vehicle interior of a vehicle door, the mounting base portion being a mounting fixing portion for the door, and the vehicle interior side of the mounting base portion. A hollow seal lip projecting from the part toward the inside of the vehicle, a shoulder portion formed by separating the hollow seal lip from the hollow seal lip and forming a portion on the vehicle outer side of the mounting base with a thick shape, and Tongue-shaped vehicle interior seal lip that projects obliquely toward the vehicle exterior in a bifurcated manner from the shoulder portion, and a tongue-shaped vehicle exterior seal that is located on the vehicle exterior side of the vehicle interior seal lip And a lip.
In addition, the vehicle interior seal lip has a bent shape at the middle in the protruding direction so that the vehicle interior surface has a convex shape. sealing lip, a thicker shape than the interior seal lip, and the surface of the interior side with exterior surface with concave shape is formed as the Curved shaped into a projecting shape, attached When the base side portion close to the base and the tip side portion close to the tip are divided in the projecting direction, the tip side portion is formed to be thicker than the root side portion.
Further, the protruding length from the shoulder portion of the vehicle outer side seal lip is set to be larger than the protruding length of the portion on the tip side of the bent portion of the vehicle inner side seal lip, and the vehicle inner side seal lip and the vehicle outer side seal lip. The separation distance between the lip and the lip in a free state is formed such that the separation distance on the tip end side is gradually larger than the separation distance on the root portion side with respect to the shoulder portion.
Then, at the time of elastic contact with the vehicle body panel when the door is closed, the portion of the vehicle inner side seal lip that is on the tip side of the bent portion is substantially parallel to the vehicle outer side seal lip without contacting the vehicle outer side seal lip. As described above, the inside seal lip and the outside seal lip are bent and deformed together with the hollow seal lip .

In this case, in order to stabilize the behavior of the vehicle inner side seal lip and the vehicle outer side seal lip at the time of bending deformation , as described in claim 2, the vehicle inner side seal lip and the vehicle outer side seal lip together with the shoulder portion. it is preferably formed of a rubber-based material softer than the mounting base.

  Therefore, in the invention according to at least the first aspect, when the door is closed, the door elastically contacts the front end portions of both the vehicle inner side seal lip and the vehicle outer side seal lip, and both of them are bent and deformed toward the vehicle outer side. The thick-walled vehicle-side seal lip that is curved so that the vehicle-inner surface is concave and the vehicle-outside surface is convex receives the vehicle-side seal lip on the concave vehicle-inside surface. As a result, it becomes possible to avoid interference between both seal lips.

  According to the first aspect of the present invention, since the vehicle inner seal lip and the vehicle outer seal lip do not interfere with each other, it is possible to prevent the generation of abnormal noise due to friction between the two as in the prior art. Since the seal lip is thick, the sound insulation can be improved at the same time.

Also, since the car inner seal lip is obtained by bending a V-shape as cross-section substantially to break point is stabilized during bending deformation of the interior seal lip, without being dragged outside of the vehicle along with the bending deformation Thus, the interference between the vehicle inner seal lip and the vehicle outer seal lip can be prevented more reliably.

Further, since the tip side of the portion of the exterior seal lip is formed thicker than the portion of the root portion closer, addition can be further contribute to the improvement of sound insulation, it is the surface of the interior side concave It is possible to bend and deform the outside seal lip while keeping the curved shape so that the outside surface of the vehicle has a convex shape, in order to avoid interference between the inside seal lip and the outside seal lip. It becomes more advantageous.

In addition, since the interior seal lip and the exterior seal lip in the form of branches from the shoulder portion which is a part of the attached base preparative bifurcated are projectingly formed, exterior surface of the exterior seal lip and the vehicle A clearance can be ensured between the vehicle door and the outside seal lip can be prevented from interfering with the vehicle door at the time of bending deformation.

The principal part perspective view of the side part of a motor vehicle. The expanded sectional view in the free state which showed embodiment of the door weather strip which concerns on this invention, and followed the AA line of FIG. Sectional drawing of the door weather strip which bent and deformed by the elastic contact with the door from the state of FIG.

  1 to 3 show a more specific form for carrying out the door weather strip according to the present invention, FIG. 1 shows a part of a side portion of an automobile, and FIG. 2 shows a line AA in FIG. FIG. 2 is an enlarged cross-sectional view taken along a line A and shows a cross section of the door weather strip in a free state. FIG. 3 shows a state in which the door weather strip of FIG. 2 is bent and deformed by elastic contact with the door when the door is closed.

  As shown in FIGS. 1 and 2, the door weather strip 5 is mounted in a so-called closed loop around the door D1 in FIG. The retainer 2 is bent and formed in a part of the sash panel of the door sash 1 with the claw portions 3 and 4 as main elements.

  As shown in FIG. 2, the door weather strip 5 is roughly divided into an attachment base portion 6 fitted and held in the retainer portion 2, and a vehicle interior (indoor) side end portion of the attachment base portion 6 toward the vehicle interior side. A hollow seal lip 7 formed to project integrally; a tongue-shaped vehicle interior seal lip 8 formed integrally to project from the end of the mounting base 6 on the vehicle exterior (outdoor) side toward the vehicle exterior; Similarly, the mounting base 6 includes a tongue-like vehicle-side seal lip 9 that protrudes from the vehicle outer side portion toward the vehicle outer side than the protruding position of the vehicle inner seal lip 8.

  The mounting base portion 6 has a substantially rectangular thick wall shape having a hollow portion 6a. The protruding portion 10 on the inside of the vehicle fits inside the claw portion 3, and the two-stage bead portions 11 and 12 on the outside of the vehicle. Since the claw portion 4 of the retainer portion 2 is engaged with the door sash 1, the door sash 1 is firmly fitted and held. A hollow seal lip 7 is integrally formed so as to project from the end of the mounting base 6 on the vehicle inner side toward the vehicle inner side. The hollow seal lip 7 is formed to have a substantially D-shaped cross section that is convex toward the vehicle body panel P on the other side. Even in the free state as shown in FIG. 2, a part of the hollow seal lip 7 is seated on the sash panel of the door sash 1. Note that a notch portion 7 a as an easily deformable portion is formed on the inner peripheral surface of the hollow seal lip 7.

  Further, the end portion on the vehicle outer side of the mounting base portion 6 is a thicker and solid shoulder portion 13, and the vehicle inner side seal lip 8 and the vehicle outer side seal lip are branched from the shoulder portion 13 in a bifurcated shape. 9 are formed so as to project obliquely toward the outside of the vehicle.

  The vehicle interior seal lip 8 is bent in a substantially U-shaped cross section so that the vehicle inner surface 8a has a convex shape, and the front end side portion of the bent portion 8b is inclined toward the vehicle outer side. .

  Further, the vehicle exterior seal lip 9 is formed to be thicker than the vehicle interior seal lip 8 as a whole, and the vehicle interior surface 9a is concave and the vehicle exterior surface 9b is convex. As a whole, it is formed in a gently curved shape with a relatively large radius of curvature.

  When the vehicle outer side seal lip 9 is divided in the projecting direction into a root side portion near the shoulder portion 13 and a tip side portion near the tip, the tip side portion is made thicker than the root side portion. It is formed. Thus, the distance between the vehicle interior seal lip 8 and the vehicle exterior seal lip 9 in the free state of FIG. 2 is formed so that the tip end side is gradually larger than the root portion side, and the vehicle exterior side Since the seal lip 9 is thick, its rigidity is sufficiently higher than that of the vehicle interior seal lip 8.

Furthermore, as shown in Figure 3, but so that the distal end portion of the interior seal lip 8 and exterior seal lip 9 is elastic contact or pressure contact with the vehicle body panel P of the counterpart, respectively when the door is closed, the car at that time The protruding lengths of the vehicle inner side seal lip 8 and the vehicle outer side seal lip 9 are set in advance so that the seal lips 8 and 9 on both the inner side and the vehicle outer side do not interfere with each other.

  Here, as shown in FIG. 2, most of the mounting base 6 is made of solid rubber, while the other hollow seal lip 7, vehicle inner seal lip 8, vehicle outer seal lip 9 and the like are It is made of sponge rubber that is softer than solid rubber. Further, a portion of the door sash 1 exposed outside the vehicle is covered with, for example, a stainless steel sash molding 14 lined with a rubber layer 14a for decoration or design.

  Therefore, according to the door weather strip 5 configured as described above, in the free state when the door is open, it has a restored shape as shown in FIG. 2, while in the closed state when the door is closed, as shown in FIG. In addition to the hollow seal lip 7, each of the vehicle inner side seal lip 8 and the vehicle outer side seal lip 9 is elastically contacted or pressed against the vehicle body panel P to bend and deform.

  Then, if the number of partition walls (seal walls) separated in the interior and exterior direction of the parting part formed by the door sash 1 and the vehicle body panel P is counted as two by the hollow seal lip 7, that is, crushed deformation If the vehicle outer wall and the vehicle outer wall of the hollow seal lips 7 are counted as two, the vehicle inner seal lip 8 and the vehicle outer seal lip 9 are added to the four wall partitions. The vehicle interior and exterior are substantially sealed in the form of a quadruple seal.

  More specifically, in addition to the hollow seal lip 7, when the detailed behavior of the seal lips 8 and 9 on the vehicle inner side and the vehicle outer side at the time of deformation is examined, the hollow seal lip 7 is connected to the vehicle body panel P. It is deformed greatly from the root side so as to be sandwiched between the vehicle body panel P and the door sash 1 by elastic contact or pressure contact, and the major axis direction of the collapsed shape extends outward in the vehicle interior. Become.

  Further, with respect to the vehicle inner side seal lip 8 and the vehicle outer side seal lip 9, their tip portions are in elastic contact or pressure contact with the vehicle body panel P, so that both the vehicle inner side and the vehicle outer side seal lips 8, 9 are further out of the vehicle side. Bends and bends so as to be oriented. At that time, it can be understood that the car interior seal lip 8 has a bent line (folding point) position in advance due to the presence of the bent portion 8b, so that the bent portion 8b can be bent stably with good repeatability. Then, it bends and deforms in a direction approaching the vehicle exterior seal lip 9.

  On the other hand, the vehicle exterior seal lip 9 maintains the curved shape in a free state in which the vehicle interior surface 9a is concave and the vehicle exterior surface 9b is convex. It is shaped to bend and deform in the same direction as the lip 8, and it is shaped to receive the front end portion of the vehicle interior seal lip 8 with a substantially concave car interior surface 9a.

Here, as is clear from FIG. 3, the hollow seal lip 7 is formed directly projecting from the mounting base 6, whereas the vehicle inner seal lip 8 and the vehicle outer seal lip 9 are further one stage higher than the mounting base 6. Since it protrudes from the high shoulder portion 13 , a gap h shown in FIG. 2 can be secured between the vehicle outer surface 9b of the vehicle outer seal lip 9 and the door sash molding 14, and the door sash is closed when the door is closed. Interference between the molding 14 and the vehicle outer side seal lip 9 can be avoided, and the door closing performance is not deteriorated. Needless to say, the distance between the hollow seal lip 7 deformed to be crushed and the vehicle interior seal lip 8 deformed to be bent does not interfere with each other.

  Therefore, as is clear from FIG. 3, both the vehicle inner side seal lip 8 and the vehicle outer side seal lip 9 are maintained in a state of being substantially parallel to each other with the tip portions thereof being elastically contacted or pressed against the vehicle body panel P. A sufficient gap is ensured between them so that the seal lips 8 and 9 on both the inside and outside of the vehicle do not interfere with each other.

  Further, the vehicle outer side seal lip 9 is not only set to have a wall thickness relatively larger than that of the vehicle inner side seal lip 8, but among the vehicle outer side seal lips 9, Sound insulation that cuts off outside noise propagating to the inside of the vehicle when the tip is divided into two parts in the projecting direction near the tip, because the tip is made thicker than the base. This is even more advantageous.

  In addition, as described above, the vehicle interior seal lip 8 is bent and deformed flexibly and flexibly from the bent portion 8b due to the presence of the bent portion 8b serving as a broken line. The bending position does not vary, which is also advantageous in preventing interference between the vehicle inner seal lip 8 and the vehicle outer seal lip 9.

  Further, as is apparent from FIG. 3, the tip side portion of the vehicle outer side seal lip 9 is formed thicker than the base side portion, so that the base of the door sash molding 14 and the vehicle outer side seal lip 9 is closed when the door is closed. Interference with the part can be avoided and the door closing performance is not deteriorated.

  Therefore, according to the door weather strip 5 of the present embodiment, even if the vehicle interior seal lip 8 and the vehicle exterior seal lip 9 that are arranged side by side are both bent and deformed in the same direction, they do not interfere with each other. Besides, it is possible to prevent the generation of rubbing noise due to the interference between the two seal lips 8 and 9, which has been regarded as a problem in the past, and it is also advantageous in terms of sound insulation by the door weather strip 5, and is quiet in the vehicle. It can also contribute to the improvement of performance.

In the present embodiment shows in FIG. 2 and 3 a section along the line A-A of the front door D1 in FIG. 1, along the line B-B where equivalent portion position of the rear door D2 2 and 3, the present invention can also be applied to the door weather strip on the rear door D2 side.

DESCRIPTION OF SYMBOLS 5 ... Door weather strip 6 ... Mounting base 7 ... Hollow seal lip 8 ... Car inner side seal lip 8a ... Car inner side surface 8b ... Bending part 9 ... Car outer side seal lip 9a ... Car inner side surface 9b ... Car outer side surface 13 ... Shoulder D1 ... Door

Claims (2)

A door weatherstrip that is mounted around the inside of a vehicle door,
A mounting base that serves as a mounting fixing portion for the door;
A hollow seal lip formed to project from the vehicle interior side of the mounting base toward the vehicle interior;
A shoulder part formed by making the part outside the vehicle of the mounting base part thick, isolated from the hollow seal lip,
Tongue-shaped vehicle interior seal lip that is formed to project obliquely toward the vehicle exterior in a bifurcated manner from the shoulder portion, and a tongue-shaped vehicle exterior that is located on the vehicle exterior side of the vehicle interior seal lip Seal lip,
With
While the vehicle inner seal lip has a shape bent in a substantially U-shaped cross section with a bent portion at the middle in the protruding direction so that the vehicle inner surface has a convex shape ,
The vehicle outer seal lip, a thicker shape than the interior seal lip and the interior side surface exterior surface with concave shape is formed as the Curved shaped into a projecting shape In addition, when bisecting in the projecting direction into the base side portion close to the mounting base and the tip side portion close to the tip, the tip side portion is formed as a thicker shape than the base side portion,
Further, the protruding length from the shoulder portion of the vehicle outer side seal lip is set to be larger than the protruding length of the portion on the tip side of the bent portion of the vehicle inner side seal lip, and the vehicle inner side seal lip and the vehicle outer side seal lip. The separation distance formed in a free state with the lip is formed so that the separation distance on the tip end side is gradually larger than the separation distance on the root portion side with respect to the shoulder portion,
At the time of elastic contact with the vehicle body panel when the door is closed, a portion of the vehicle interior seal lip that is on the tip side of the bent portion is substantially parallel to the vehicle exterior seal lip without contacting the vehicle exterior seal lip. The door weather strip is characterized in that the inside seal lip and the outside seal lip are bent and deformed together with the hollow seal lip . The vehicle inner sealing lip and exterior seal lip, the door weather strip according to claim 1, characterized in that it is formed by rubber material softer than the mounting base together with the shoulder portion.

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