JPH0512125Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is attached to a body flange formed at the periphery of an opening in the vehicle body of an automobile, and the gap between the body flange and a door member that closes the vehicle body opening is reduced. It relates to a sealing weather strip, and more specifically, the weather strip prevents the hollow door side seal lip from collapsing in the height direction and falling toward the inside of the vehicle when attached to the arched portion or curved corner portion of the body flange. This relates to weather strips.

(Prior Art) Among the weather strips installed to seal the gap between the opening of the vehicle body and the door member, in particular, weather strips installed at the periphery of the baggage entrance of the trunk room are usually As shown in the figure, a body flange 3 of a required width is formed at the periphery of the opening of a trunk room 1 of an automobile by raising the end of the body panel 2 upward at a substantially right angle.
An inverted U-shaped fitting part 5 of a weather strip W formed by embedding a metal core 4 such as a lath wire mesh in rubber.
A plurality of flange holding lips 6a, 6 are fitted into each other, and the body flange 3 is protruded from the inner surface of the groove of the fitting portion 5.
b, 6c, and 6d to prevent it from coming off by sandwiching it from both inside and outside of the car, and also to prevent the fitting part 5 from coming off.
A main lip 7 provided on one side is brought into contact with the outer surface of the body panel 2, and a hollow cylindrical door side seal lip 8 formed integrally with the upper part of the fitting part 5 is attached to a door side seal lip 8, which serves as a lid for the trunk room 1. The inner surface 9a of the trunk lid 9 is brought into contact with the trunk lid 9 to provide a seal when the trunk is closed.

(Problem that the invention attempts to solve) However, in the weather strip W of the conventional structure, this is actually applied to the body flange 3 of the automobile.
When the door side seal lip 8 is installed in a curved corner portion with a relatively small radius of curvature as shown in FIG. When the trunk lid 9 is closed, the seal line S' with the inner surface 9a deviates toward the inside of the vehicle from the designed position of the seal line S, so the trunk lid 9 is closed and the inner surface 9a is used to seal the door side seal lip. 8, a tilting moment acts on the fitting part 5 toward the inside of the car as shown by the arrow The problem is that creases tend to form on the interior side of the door side seal lip 8, and when these creases intersect with the seal line, the seal line is interrupted and the sealing force is reduced.

Furthermore, in the above weather strip, when it is attached to the arched portion of the body flange 13, tension in the longitudinal direction acts on the top surface of the door side seal lip 8 furthest from the fitting part 5, and the door side seal lip 8 As shown in the figure, it was crushed and the overall height when installed became extremely low, which caused the problem that the sealing performance of this part was greatly reduced.

The present invention was developed by focusing on the problem of the reduction in sealing force caused by the deformation of the door side seal lip when the body flange is attached to the conventional weather strip. By bringing the fitting into contact with the shoulder portion of the fitting portion, it is possible to prevent the fitting from falling toward the inside of the vehicle and collapsing in the height direction, thereby solving the above-mentioned problems.

(Means for Solving the Problems) The configuration of the present invention for achieving the above object will be explained with reference to FIGS. 1 and 2, which correspond to embodiments.

The weather strip of the present invention has a fitting part 1 having an inverted U-shaped cross section which is fitted to the body flange 13 of an automobile.
A hollow door-side seal lip 18 that comes into contact with the door member 24 is integrally formed on the upper part of the door member 5. The portion 18a connected to the fitting portion 15 and the wall thickness near the portion 18a are slightly thinner than other portions, and when the weather strip 14 is bent, the lower both corners of the door side seal lip 18 The portion 22.22' is the shoulder portion 23 of the fitting portion 15,
23'.

(Function) When the weather strip of the present invention having the above configuration is fitted with the fitting portion 15 into the arched portion or curved corner portion of the body flange 13, the weather strip 15 of the door side seal lip 18 is attached to the fitting portion 15. The connected portion 18a deforms before the other portions, and the lower both corner portions 22, 22' of the door side seal lip 18 deform as the shoulder portions 23, 22' of the fitting portion 15.
23', it is prevented from falling towards the inside of the vehicle, and the entire door side seal lip 18 is prevented from collapsing in the height direction, thereby preventing water leakage between it and the door member 24. will be resolved.

(Example) Hereinafter, an example of the present invention will be described in detail based on the accompanying drawings.

FIG. 1 is a sectional view showing an example of the weather strip according to the present invention, and FIG. 2 is a sectional view showing the weather strip attached to a curved corner portion.

In these figures, 11 is a body panel of the automobile, and 12 is a trunk room surrounded by the body panel 11, and the edge of the body panel 11 is attached to the periphery of the opening of the luggage entrance of the trunk room 12. A body flange 13 of a required width is provided around the entire circumference of the opening edge, the body flange 13 being bent and raised at a substantially right angle.

Reference numeral 14 denotes a weather strip provided with a fitting part 15 having an inverted U-shaped cross section to be fitted to the body flange 13.
It has a structure in which a metal shape-retaining core body 17 made of lath wire mesh or the like is buried inside the body flange 13, and a hollow door-side seal lip 18 made of sponge rubber or the like is attached to the upper part of the fitting part 15. A body panel 11 that is integrally provided slightly toward the outside of the vehicle from the center l, and that is continuous with the body flange 13 at the lower part of the fitting portion 15 on the outside of the vehicle.
A main lip 19 that comes into contact with the outer surface 11a of the main lip 19 is integrally formed.

The weather strip 14 also includes a pair of flange retaining lips 21a, 21b on the inner surface of the mounting groove 20 of the fitting portion 15, which grip the body flange 13 from both the outer and inner sides of the vehicle. 21c, 21d, each flange retaining lip 21a, 21b, 21
c and 21d are provided in the mounting groove 20, respectively, so as to be inclined toward the groove bottom.

The door side seal lip 18 has a triangular shape with a rounded cross section, especially the top, and a portion 18 connected to the fitting part 15 at the lower part.
The wall thickness near the portion 18a and the portion 18b is set to be thinner than other portions, and this portion is the most flexible. Shoulder part 23,2
The shape is such that it can come into contact with 3'.

In the figure, 24 is a trunk lid whose inner surface 24a is in contact with the top surface of the door side seal lip 18.

The weather strip of the present invention has the above-mentioned configuration. Next, its function will be explained. First, in order to attach the weather strip 14 to the body flange 13, the mounting groove 2 of the fitting part 15 is
0 is attached to the curved corner portion or arched portion of the body flange 13, the flange holding lips 21a, 21 protruding from the inner surface of the fitting portion 15 are attached.
b, 21c, and 21d sandwich the body flange 13 from both inside and outside of the vehicle, and the main lip 19 comes into contact with the outer surface 11a of the body panel 11 to prevent water from flowing from the gap between the fitting part 15 and the body flange 13. Seal leaks.

At this time, the door side seal lip 18 integrally formed on the upper surface of the fitting part 15 is attached to the weather strip 1.
The door side seal lip 18 receives tension in the longitudinal direction due to the bending of the door 4, and tends to deform into a vertically long or horizontally long cross section.
8a is thinner than other parts and easily deforms, and the corner outer surfaces 22, 22' are the shoulder parts 2 of the fitting part 15.
3 and 23', resulting in a so-called elbow-butt state, which prevents the door-side seal lip 18 from falling toward the inside of the vehicle, and also prevents the arch-shaped body flange 1 from falling inward.
3, an extreme reduction in height is also prevented.

Therefore, the trunk lid 24 is closed as shown in FIG.
Even when the door-side seal lip 18 is compressed in the vertical direction, the door-side seal lip 18 does not change its position in the horizontal direction with respect to the fitting part 15, and prevents the entire weather strip 14 from falling toward the inside of the vehicle. In addition to properly maintaining the sealing surface pressure of the main lip 19, the sealing line and sealing surface pressure between the main lip 19 and the trunk lid 24 can be maintained appropriately, and high sealing performance can be achieved.

(Effects of the invention) As mentioned above, the weather strip of the invention has the following effects:
In a weather strip that is integrally provided with a hollow door-side seal lip that comes into contact with a door member on the upper part of an inverted U-shaped fitting part that is fitted to the body flange of an automobile, the hollow door-side seal lip is shown in cross section. It is formed into a substantially triangular shape, and the wall thickness of the portion of the door side seal lip connected to the fitting portion and the vicinity of the portion is made slightly thinner than other portions, and the door side seal lip is formed by bending the weather strip. The corner portions on both sides of the lower portion are configured to contact the shoulders of the fitting portion, and when this is attached to the curved corner portion or arched portion of the body flange, the outer surface of the door side seal lip contacts the shoulder of the fitting part and prevents it from falling towards the inside of the vehicle, prevents the sealing force from decreasing due to collapse in the height direction, and maintains the seal line position and seal surface pressure appropriately. It has the excellent effect of improving sealing performance.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an example of the weather strip of the present invention, Fig. 2 is a sectional view showing how the weather strip is installed, Fig. 3 is a sectional view showing how a conventional weather strip is installed, and Fig. 4 is a sectional view of the weather strip. FIG. 5 is a perspective view showing a state in which the weather strip is attached to a curved corner portion, and a sectional view showing a deformed state when the weather strip is attached in an arch shape. 13...Body flange, 15...Fitting part, 1
8...Door side seal lip, 18a...Connection part, 22, 22'...Outer surface (corner outer surface), 23, 2
3'...Shoulder, 24...Door member (trunk lid).

Claims (1)

[Scope of utility model registration request] Inverted U cross section that fits into the body flange of an automobile
In a weather strip that is integrally provided with a hollow door-side seal lip that comes into contact with the door member on the upper part of the letter-shaped fitting part, the hollow door-side seal lip is formed to have a substantially triangular cross section, and the door-side seal lip has a substantially triangular cross section. The wall thickness of the part connected to the fitting part and the vicinity of the fitting part is made slightly thinner than other parts, so that when the weather strip is bent, the corner parts on both sides of the lower part of the door side seal lip are connected to the fitting part. A weather strip characterized in that it is configured to come into contact with the shoulder of a person.