JPS6056645B2 - Door seal structure - Google Patents

Description

[Detailed description of the invention] The present invention relates to a door seal structure.

As a conventional door seal structure, for example, there is a structure shown in FIG. 2 for an eyebrow wheel.

This is illustrated in the cross section of a four-door car shown in Figure 1, taken along the line ■-Π, where 1 is the front door, 2 is the rear door, 3 is the center pillar, and both the front and rear doors 1,
Door trims 4 and 5 are attached to the inner panels 1a and 2a, and a door weather strip 6, which is a sealing member, is attached to the joint surface 11 with the center pillar 3. This shuts off the inside and outside of the vehicle when each door 1 and 2 is closed.
(Please refer to "New Automotive Engineering Handbook" 9-32). However, in such a conventional seal structure, there is only one door weather strip for each door center pillar, so wind noise etc. that enter from the parting surface P are absorbed by the door weather strip. Although it is temporarily blocked by the door weather strip 6, it is not necessarily sufficient, and the sound A that has passed through the door weather strip 6 is propagated as it is to the inside of the vehicle, and the sound that is further transmitted to the inside of each door 1 and 2. B indicates that the inner panels 1a, 2a and the door trim 4,
There is a risk that it will propagate into the vehicle interior through the gap between the

Furthermore, as a means for suppressing the propagation of sound into the vehicle interior, there is a structure shown in FIG. While further attaching the weather strip 9 to the welt 8, a part of the inner panel 1a is attached to the sealing surface 1.
0, and by sealing with the weather strip 10 in addition to the door weather strip 6 described above, a substantially double-sealed structure is achieved. According to this structure, the sound A entering from the parting surface P (Fig. 2) is transmitted to the door weather strip 6 and the door weather strip 1.
Although the sound B is significantly attenuated step by step by the inner panel 1a, it does not function as a sound insulation measure for the sound B that enters through the gap between the inner panel 1a and the door trim 4. Furthermore, since the inner panel 1a forms the sealing surface 10, the inner panel The boundary between the door trim 1a and the door trim 4 becomes extremely clear, and when the door is opened, the boundary and the sealing surface 10 are exposed to the outside, resulting in an unsightly appearance. In view of the above points, this invention was made for the purpose of obtaining a reliable sound insulation effect without impairing the aesthetic appearance.For this purpose, in the present invention, in the door seal structure, the door panel for the sensor pillar is A seal lip that presses against the edge of the center pillar when the door is closed is placed on the indoor side of the door weather strip placed on the side joint surface to insulate noise from the outside. The inner panel is sandwiched between the inner panel and the door trim to insulate sound between the door panel and the door trim.

Next, an embodiment of the present invention will be described in detail on the front door side based on the drawings.

FIG. 4 shows an embodiment of the present invention, and the same parts as those in FIGS. This is a door weather strip, and a tongue-shaped seal lip 20 that comes into pressure contact with the welt 8 is disposed on the joint surface 11 on the front door 1 side at a position closer to the interior of the vehicle than the door weather strip 6. It has been set up.

The seal lip 20 is formed by integrally extending a curved lip portion 20b from a flat base portion 20a, and the base portion 20a is clamped and fixed between the inner panel 1a and the door trim 4. More specifically, the base 20a of the seal lip 20 is attached to the inner panel 1a or the door trim 4.
It is assumed that the inner panel 1a and the door trim 4 are clamped together in the assembly stage. The shape of the seal lip 20 is shown in Figure 4. As shown by the dashed line, the lip portion 20b may be formed into a substantially U-shape or a horseshoe shape.

Therefore, according to the above structure, when the door 1 is closed, the door weather strip 6 and the seal lip 20 form a substantially double seal structure, so that the parting surface P shown in FIG.
The wind noise and the like transmitted from the door are significantly attenuated by the door weather strip 6 and the seal lip 20, and the sound propagating to the inside of the vehicle is suppressed.

On the other hand, since the base 20a of the seal lip 20 is held between the inner panel 1a and the door trim 4, the gap between the inner panel 1a and the door trim 4 is closed, and the seal lip 20 is inserted into the passenger compartment through the working hole 7 from inside the door panel. Sound B propagating inward is also significantly attenuated and suppressed. In the above-mentioned embodiment, if a large number of protrusions 20c are formed on the base 20a of the seal lip 20 as shown in FIG. A sealing effect can be expected, which is more preferable.

As is clear from the above description, according to the present invention, it is possible to attenuate and suppress wind noise propagating from the door periphery into the vehicle interior, and the boundary between the inner panel and the door trim and the sealing surface are This has the effect of improving the aesthetic appearance without being exposed to water.

[Brief explanation of drawings]

Figure 1 is a front perspective view of a four-door car, Figure 2 is a conventional door seal structure, and is a sectional view taken along the line ■-■ in Figure 1, and Figure 3 is another conventional door seal structure. Cross-sectional view (second
(corresponding to the left half of the figure), FIG. 4 is a sectional view showing one embodiment of the present invention, and FIG. 5 is an explanatory view showing another embodiment of the seal lip shown in FIG. 4. 1...Front door, 2...Rear door, 1a, 2a...Inner panel, 3...
・Center pillar, 4, 5...Door trim, 6
・・・・・・Door weather strip, 8・・・・・・
Welt, 20...Seal lip.

Claims (1)

[Claims] 1 At the joint between the door panel and center pillar,
A door seal structure in which a door weather strip is disposed on a joint surface on the door panel side, and when the door is closed, the door weather strip comes into pressure contact with a part of the center pillar to seal between the door and the interior of the room. A seal lip is provided on the interior side of the weather strip and presses against the edge of the center pillar when the door is closed, and the seal lip is clamped and fixed between the door inner panel and the door trim. door seal structure.