JP3160141B2 - Door weatherstrips for vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weather strip for a vehicle, which is mounted on a peripheral portion of a door and seals between a door and an opening edge of a vehicle body.

[0002]

2. Description of the Related Art A conventional door weather strip for a vehicle has been proposed as shown in FIG.
-124430). That is, the vehicle body 31 is provided with an opening 32 for getting on and off.
A seal surface 34 is formed on the pillar 33 forming the second edge. A door weather strip 36 is fixed to a peripheral portion of a door 35 that opens and closes the opening 32, and a hollow lip 37 is attached to the door weather strip 36.
Are formed.

In this configuration, when the door 35 is closed, one surface of the hollow lip 37 comes into close contact with the sealing surface 34 due to the reaction force as shown in the figure, whereby the door 35 and the pillar 3 are closed.
The sealing property between the three is ensured.

[0004]

As described above, in the door weather strip 36, the hollow lip 37 comes into close contact with the sealing surface 34 due to its reaction force, so that water tightness is ensured. Therefore, if the thickness of the hollow lip 37 is increased, the reaction force is increased, and the sealing performance between the door 35 and the pillar 33 can be improved. However, if the reaction force of the hollow lip 37 is increased, the reaction force acts on the door 35 when the door is closed, so that the closeability of the door 35 deteriorates.

Conversely, if the hollow lip 37 is made thinner, the reaction force is reduced, and the closeability of the door 35 can be improved. However, when the reaction force of the hollow lip 37 is reduced, not only the watertightness is reduced, but also the rigidity of the hollow lip 37 itself is reduced.
7 is displaced from the sealing surface 34 toward the opening 32 (arrow c), so-called lip entrainment occurs. Therefore, while the closing performance of the door 35 is improved, the sealing performance between the door 35 and the pillar 33 is reduced. That is, in the door weather strip 36, the sealing property and the door closing property are two trade-off elements, and it has been difficult to improve both of them.

SUMMARY OF THE INVENTION The present invention has been made in view of such conventional problems, and has as its object to provide a vehicle weatherstrip which can improve both the sealing performance and the door closing performance. It is.

[0007]

According to the present invention, in order to solve the above-mentioned problems, a hollow lip is attached to a peripheral portion of a door, and when the door is closed, a hollow lip is brought into close contact with a sealing surface provided at an opening edge of a vehicle body. In the door weather strip to be sealed by sealing , the sealing surface is a surface extending in a direction along the outer surface of the vehicle body.
Consisting of a flat part and a curved part curved in the cabin direction.
Is, the hollow lip, a thin portion closely over the curved portion from said flat portion is formed at a portion side closely to the sealing surface, close said thin portion over the curved portion from said flat portion a thick-shaped thick portion than opposing the thin portion to the flat portion in a state, and a notch portion formed on both sides of the thick portion, close to said plane portion on the thin portion The seal lip which protrudes is provided.

[0008]

In the above construction, when the door is closed, the hollow lip contacts the flat portion of the sealing surface from the flat portion to the curved portion on the thin portion side. The effect is also small. Further, since a thick portion is provided at a portion facing the flat portion of the hollow lip, the rigidity of the hollow lip is ensured at the thick portion . In addition
The thin part has a seal lip that is in close contact with the flat part.
The seal lip is in close contact with the flat part
And the rigidity of the hollow lip is secured in the thick part
By the fact and that is, when the hollow lip is deformed, the plane
Site to be closely in part entrainment lip located offset from the plane portion can be prevented. In addition, since the notches are provided on both sides of the thick part, the rigidity of the thick part does not affect the thin part side, and an increase in reaction force is avoided by bending at the notch part. You. In addition, not only is the thin portion in close contact with the flat portion and the curved portion of the sealing surface , but also the seal is made by the sealing lip in close contact with the flat portion . Therefore, a substantially double sealing structure is achieved, and sufficient sealing performance is ensured even when the reaction force is reduced.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. That is, as shown in FIG. 3, the vehicle body 1 is provided with an opening 2 for
A lock pillar 3 forming a trailing edge portion is provided.
As shown in FIGS. 1 and 2, a seal surface 4 is formed on the lock pillar 3, and the seal surface 4 has a flat surface portion 5 formed of a surface extending along the outer surface of the vehicle body 1 and a vehicle interior direction. And a first curved portion 6 which is curved to the right.

The door 7 that opens and closes the opening 2 includes a door outer panel 8 and a door inner panel 9 that is hemmed to an end of the door outer panel 8. At the peripheral edge of the door inner panel 9, a step portion 10 that is substantially parallel to the flat portion 5 when the door 7 is closed, and a mounting surface 12 that is connected to the step portion 10 via a second curved portion 11. Are formed.

A door weather strip 13 is mounted on the mounting surface 12, and the door weather strip 1 is
The base 3 is formed with a base 14 having a shape along the second curved portion 11 from the mounting surface 12. The base 14 receives the head of the resin clip 23, and holds the resin clip 2.
3 by inserting and locking the legs to the mounting surface 12,
The door weather strip 13 is fixed to a peripheral portion of the door 7.

Also, the door lip 1 is provided from the base 14.
5 and the hollow lip 17 are protruded, and the door lip 1
The tip of 5 is in close contact with the step 10. The hollow lip 17 has a hollow portion 16, and a thin portion 18 is formed on a portion side that is in close contact with the sealing surface 4, and the thin portion 18 is in close contact with the sealing surface 4, as shown in FIG. In this state, a thick portion 19 is formed at a portion facing the flat portion 5. The thick portion 19 is thinned (for example, 1.5 m
m) (for example, 3 mm), and notch portions 20 and 21 are provided on both sides thereof. Further, a seal lip 22 is formed on the thin portion 18, and the seal lip 22 protrudes at a position where its tip is in close contact with the flat portion 5 when the door is closed.

In the embodiment having the above-described structure, when the door 7 is opened, the hollow lip 17 maintains a natural shape in which the hollow portion 16 is bulged as shown in FIG. Then, when the door 7 is closed, as shown in FIG.
7 is deformed on the side of the thin portion 18, and is brought into close contact from the flat portion 5 of the sealing surface 4 to the first curved portion 6 by the reaction force. The deformable thin portion 18 is thinner than the thick portion 19 and the reaction force generated by the deformation is small.
The effect on the closing property of the vehicle is small.

If the thin portion 18 is formed in a portion that is in close contact with the sealing surface 4 as described above, the hollow lip 17 is displaced from the sealing surface 4 toward the opening 2 when the door 7 is closed (arrow). a), so-called lip entrapment may occur. However, in the hollow lip 17, since the thick portion 19 is provided in a portion of the sealing surface 4 facing the flat portion 5, the rigidity of the hollow lip 17 is ensured in the thick portion 19.

[0015] Therefore, when the hollow lip 17 is deformed, the entrainment lip thin portion 18 is located offset from the sealing surface 4 is prevented by the rigidity of the thick portion 19 Rutotomo
Then, as shown in the drawing, the seal lip 22 is in close contact with the flat portion 5.
This also prevents the lip from being entangled and properly forms a close contact with the sealing surface 4. In addition, since the notches 20 and 21 are provided on both sides of the thick portion, the rigidity of the thick portion 19 does not affect the thin portion 18 side, and the bending at the notches 20 and 21 does not occur. Thus, an increase in the reaction force is avoided. Therefore, the closing ability of the door 7 can be improved by suppressing the reaction force of the hollow lip 17 and avoiding the increase of the reaction force by the notches 20 and 21 described above.

Further, the thin portion 18 is moved from the flat portion 5 to the first
Not only is sealing achieved by contact over the curved portion 6, but also sealing is achieved by the sealing lip 22 coming into close contact with the flat portion 5. Therefore, a double sealing structure of the seal by the hollow lip 17 and the seal by the seal lip 22 can be achieved, and the sealing performance can be improved. Can be prevented from entering the vehicle interior due to the watertightness of the seal lip 22.

[0017]

As described above, according to the present invention, the hollow lip is closely contacted from the flat portion forming the sealing surface to the curved portion.
Since the thin portion is formed, the reaction force when the hollow lip comes into close contact with the flat portion from the curved portion can be suppressed, and the influence on the door closing property can be reduced.
Further, by forming the thick portion on the site side facing the flat surface portion DOO
In particular, a seal lip is formed on the thin part so as to be in close contact with the flat part
The seal lip is close to the flat part
And ensure the rigidity of the hollow lip in the thick part
By the fact that, when the hollow lip is deformed, the site should be close to the plane of the thin portion Ru can entrainment lip located offset from the plane portion is prevented. In addition, since the notch portions are provided on both sides of the thick portion, the rigidity of the thick portion does not affect the thin portion. Therefore, by suppressing the reaction force of the hollow lip and avoiding an increase in the reaction force due to the notch portion, the door closeability can be improved.

Further , by providing the seal lip which is in close contact with the flat surface portion of the seal surface, a double seal structure of the seal using the hollow lip and the seal using the seal lip can be obtained, and the sealing performance can be improved. Therefore, it is possible to achieve both the improvement of the sealing performance and the improvement of the door closing performance, which were conventionally contradictory.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention when a door is closed, FIG.
FIG. 3 is a cross-sectional view taken along line AA of FIG.

FIG. 2 is an explanatory diagram showing a natural state of the door weather strip according to the embodiment.

FIG. 3 is a side view of the vehicle body.

4 is a cross-sectional view showing a conventional structure and corresponding to AA in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 2 Opening part 3 Lock pillar 4 Seal surface 7 Door 13 Door weather strip 17 Hollow lip 18 Thin part 19 Thick part 20 Notch part 21 Notch part

Claims (1)

(57) [Claims] 1. A mounted on the periphery of the door, the hollow lip is in close contact with the sealing surface provided on the vehicle body opening edge portion in the sealing doors weatherstrip when the door is closed, before
The sealing surface is a flat surface that extends in the direction along the outer surface of the vehicle body.
A hollow portion formed of a surface portion and a curved portion curved in a vehicle interior direction, wherein the hollow lip is formed on a portion side in close contact with the sealing surface and is in close contact with the flat portion from the curved portion ; A thick portion that faces the flat portion and is thicker than the thin portion in a state where the portion is in close contact with the curved portion from the flat portion, and a notch portion formed on both sides of the thick portion. Have
A weather lip for a vehicle, wherein a seal lip that is in close contact with the flat portion is protruded from the thin portion.