JP3371218B2 - Door weather strip - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for preventing an outer lip from falling down at a lower corner portion of a door weather strip. 2. Description of the Related Art Conventionally, as a door weather strip which is attached to a door side, elastically contacts an opening edge of a body and seals between the door and the opening edge of the body, as shown in FIGS. 20 has a peripheral surface 23 of a step 22 protruding from an inner surface 21 thereof.
A hollow seal portion 32 integrally joined to the base portion 31 and elastically contacting the body opening edge 10;
At the tip of the hollow seal portion 32, a weather strip is used, which is formed of an outer lip 33 projecting in a direction substantially perpendicular to the peripheral surface 23 and elastically contacting the body opening edge 10. A retainer 29 is attached to the peripheral surface 23 and fits the base 31. [0003] However, the conventional door weather strip 30 has a lower corner portion L shown in FIGS.
In the above, since the inner part of the neutral line MM near the center of the arc is compressed by receiving a compressive load in the longitudinal direction because it is curved along the arc-shaped peripheral surface 23, the arc is opposite. The outer portion of the neutral line MM, particularly the outer lip 33, which is far from the center of the lip, is pulled under a tensile load in the longitudinal direction. Therefore, the outer lip 33 cannot maintain a posture substantially perpendicular to the peripheral surface 23, and as shown in FIG. 6 and FIG. However, there is a problem in that the seal seals the seal surface of the hollow seal portion 32 and breaks the seal. As a countermeasure against the breakage of the seal of the door weather strip 30 at the lower corner L, a notch T is formed in an outer lip 33 corresponding to the lower corner L as shown in FIG. The part is replaced with a molded article 40, but the former is
As shown in FIG. 10, a new problem arises in that the remaining root of the outer lip 33 is cut off at the end of the terminal S, and the latter involves a considerable increase in cost. [0005] The problem to be solved is that, in the conventional door weather strip 30, the outer lip 33 corresponding to the lower corner portion L falls to the indoor side N and the seal is broken. , Causing water leakage W,
Another problem is that the outer lip 33 is cut off T in order to prevent falling N and water leakage W, or that portion is replaced with a molded product 40, which is another problem. The present invention provides a structure for preventing the outer lip of the door weather strip from falling down so that the outer lip 33 corresponding to the corner portion L does not fall down to the indoor side. The present invention is directed to a hollow seal portion 3 which elastically contacts a body opening edge 10 with a base portion 31 attached to a peripheral surface 23 of a step portion 22 protruding from an inner surface 21 of a door 20.
2 are integrally connected, and an outer lip 33 projecting from the end of the hollow seal portion 32 in a direction substantially perpendicular to the peripheral surface 23 so as to elastically contact the body opening edge 10 is provided.
In the door weather strip 30 for sealing between the door and the body opening edge 10, the arc-shaped portion of the lower corner portion L of the door 20 is curved toward the indoor side to form an arc-shaped small step portion (25).
And the small steps (25) of the door weathers
Curve the trip and move it toward the indoor side, and use the outer lip (3
3) from the position substantially perpendicular to the peripheral surface (23) to the outdoor side,
This is a structure for preventing the outer lip of the door weather strip from falling down by contacting the side of the outer lip 33 with the small step portion 25. FIG. 5 and FIGS. 11 to 14 show an embodiment of the present invention.
Is a door, 21 is its inner surface, 22 is a step protruding from the inner surface 21, L is an arc-shaped lower corner portion as viewed from the indoor side, 23 is a peripheral surface perpendicular to the inner surface 21 of the step 22, 25
Protrudes from the inner surface 21 along the lower corner portion L,
It is an arc-shaped small step when viewed from the indoor side, and its outer peripheral surface is perpendicular to the inner surface 21, and its inner surface is perpendicular to the peripheral surface 23,
Both ends are connected to the inner surface 21 via inclined surfaces. Reference numeral 30 denotes a door weather strip for sealing between the body opening edge 10 and the door 20, and is constructed as follows. That is, 31 is a base portion attached to the peripheral surface 23 of the step portion 22, 32 is a hollow seal portion integrally connected to the base portion 31 and elastically contacts the body opening edge 10, and 33 is a tip of the hollow seal portion 32. And an outer lip projecting in a direction substantially perpendicular to the peripheral surface 23 and elastically contacting the body opening edge 10. A portion corresponding to the lower corner portion L of the door weather strip 30 will be described. The door weather strip 30 is curved in an arc along the lower corner portion L of the step portion 22.
It is bent by the small step portion 25 and brought closer to the indoor side. A retainer 29 is attached to the peripheral surface 23 and fits the base 31. The protrusion amount H of the small step portion 25 is 6 m.
m to 10 mm are preferred. In FIG. 12, P is a normal line, and Q is a change line. In the lower corner portion L, as in the conventional example, the door weather strip 30 is curved along the arc-shaped peripheral surface 23. The outer part of the neutral line MM, especially the outer lip 33, which is compressed under the compressive load in the direction and is opposite to the center of the arc, and in particular the outer lip 33 receives the tensile load in the longitudinal direction,
Pulled. Further, in the small step portion 25, as shown in FIG. 11 to FIG.
The outdoor portion of -M is compressed in the longitudinal direction, and the indoor portion of the neutral line is pulled. As described above, the door weather strip 30 has the arc-shaped peripheral surface 2 at the lower corner portion L.
3, and the outer lip 33 cannot maintain a posture substantially perpendicular to the peripheral surface 23 as shown in FIGS. 11 to 14. , To minimize the elongation and fall to the outdoor side to relax the tensile load, without causing seal breakage,
Therefore, no water leakage occurs even during high-pressure car washing. Since the present invention is configured as described above, the outer lip 33 does not fall to the outdoor side at the lower corner portion L, and the seal does not break. Does not occur.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partial perspective view showing an outer surface of a vehicle. FIG. 2 is a sectional view taken along line AA of FIG. 1 showing a conventional example of a roof portion. FIG. 3 is a sectional view of a door weather strip. FIG. 4 is a cross-sectional view of another door weather strip. FIG. 5 is a side view showing an outer surface of a door of the vehicle. FIG. 6 is a sectional view taken along line BB of FIG. 5 showing a conventional example. FIG. 7 is a partial perspective view showing a portion C of the first conventional example. FIG. 8 is a side view showing a portion C of a second conventional example. FIG. 9 is a side view showing a portion C of a third conventional example. FIG. 10 is a perspective view showing a problem of FIG. 8; FIG. 11 is an inside view of the embodiment of the present invention. FIG. 12 is a DD view of FIG. 11; FIG. 13 is an EE plane view of FIG. 11; FIG. 14 is a perspective view of the lower corner portion of the embodiment of the present invention as viewed from the inside of the door. [Description of Symbols] 10 Body opening edge 20 Door 21 Inner surface 22 Step 23 Peripheral surface 25 Small step 29 Retainer 30 Door weather strip 31 Base 32 Hollow seal 33 Outer lip 40 Molded product H Extruded amount L Lower corner MM Neutral line N Falling P Normal line Q Change line S Cut T Notch W Water leak

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroshi Kataoka 1-1-1, Daihatsu-cho, Ikeda-shi, Osaka Prefecture Inside (72) Inventor Nobutaka Ikeda 1-1-1, Daihatsu-cho, Ikeda-shi, Osaka Incorporation (56) References JP-A-3-26617 (JP, U) JP-A 5-68720 (JP, U) JP-A-59-4313 (JP, U) JP-A-63-101214 (JP, U) U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B60J 5/00

Claims (1)

(1) A base (31) attached to a peripheral surface (23) of a step (22) protruding from an inner surface (21) of a door (20).
The hollow seal part (3) which makes elastic contact with the body opening edge (10)
2) are integrally joined, and the front end of the hollow seal portion (32) is attached to the body opening edge (1) in a direction substantially perpendicular to the peripheral surface (23).
The lower corner portion of the door (20) in the door weather strip (30) that seals between the door (20) and the body opening edge (10) by protruding the outer lip (33) that makes elastic contact with the door (20). (L)
An arc-shaped small step (25) is protruded by being curved toward the indoor side,
The step (25) allows the door weatherstrip to bay.
Bend it to the indoor side and go around the outer lip (33).
A door weatherstrip which is tilted outward from a position substantially perpendicular to a surface (23) and abuts a side of the outer lip (33) on the small step (25).