JPH0220087Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a weather strip that is fixed to the periphery of an automobile door and seals between the weather strip and the automobile body.

FIG. 5 shows a conventional weather strip 31.
Base 31 fixed to peripheral edge 32a of automobile door 32
a, and an automobile body panel 33 protruding from this
It consists of a hollow seal portion 31b that comes into elastic contact with. door 3
As shown in the phantom line, the weather strip 31 attached to the panel 33 is closed when the door 32 is closed.
It comes into ballistic contact with and seals. The hollow seal portion 31b that comes into elastic contact with the panel 33 makes strong elastic contact in the circular line portion shown in the figure, but this elastic contact force becomes weaker toward the upper part, resulting in poor sealing performance. Further, in this type of cross section, the followability is poor at the portion where the peripheral edge 32a bends inward, causing buckling and deformation, which adversely affects sealing performance. The cause of this is that the hollow seal portion 31
There seems to be a problem with the inclination angle θ ₂ between the inner wall portion 31c and the bottom surface of the base portion 31a.

This invention was made to eliminate the above-mentioned drawbacks, and its purpose is to provide a weather strip with excellent sealing performance.

The gist of this invention is that an inner wall portion having a relatively small hollow seal portion at the tip is provided diagonally on the inside of the vehicle of a base fixed to the periphery of an automobile door, and an outer wall portion is provided diagonally on the outside of the base. At the same time, this is connected to the hollow seal part to form a hollow support part, and a bent part is provided on the hollow side of the hollow support part, and the hollow support part is integrally formed.

Hereinafter, embodiments of this invention will be described in detail with reference to the illustrative diagrams of FIGS. 1 to 4.

Fig. 1 is a sectional view of this invention, Fig. 2 is a sectional view of another embodiment, Fig. 3 is a side view of an automobile showing where this invention is installed, and Fig. 4 is an explanatory diagram of the action, with circular lines. A cross section of the part is shown.

In the figure, 1 is the weather strip of this invention, 4 is the base, 5 is the hollow seal part, 6 is the inner wall part, 7 is the outer wall part, 8 is the hollow support part, 10 is the bent part, and θ is the angle of inclination. It is.

In this invention, the base 4 fixed to the periphery 3a of the door 3 of the automobile 2 is attached to the inside of the vehicle at an inclination angle (θ) of about 70.
An inner wall part 6 is inclined toward the body panel 2a side at an angle of 100 degrees, and has a relatively small perfectly circular hollow seal part 5 at its tip that makes elastic contact with the panel 2a. Angle smaller than (θ) (θ ₁ ) approx.
Outer wall portion 7 tilted at 40 degrees and also tilted toward panel 2a
is provided diagonally and is connected to the hollow seal part 5 to form a hollow support part 8, and the hollow support part 8
Each connecting portion 9 formed between the hollow seal portion 5 and the inner and outer wall portions 6 and 7 is provided with a bent portion 10 on the hollow 8a side, and is integrally formed of a flexible material such as rubber. . In this invention, as shown in FIG. 2, the hollow seal portion 5 may be provided with a protruding tongue piece 5a that comes into elastic contact with the body panel 2a for sealing. This invention can improve the sealing performance by partially changing the thickness, degree of softness, hardness, etc.

FIG. 4 shows the installation state of this invention, in which the base 4 is fixed to the peripheral edge 3a of the door 3. This fixed state corresponds to the circle line portion in FIG. 3, where the peripheral edge 3a is bent inward.

In this invention, the wall portion 6 of the support portion 8 integrated with the hollow seal portion 5 is inclined at about 70 degrees, and the wall portion 7 is inclined at about 40 degrees (θ>θ ₁ ), so that the support portion 8 There is no buckling or deformation at the bent portion, and the sealing condition is extremely good. When the door 3 is closed, the sealing part 5 comes into elastic contact with the panel 2a to form a seal, as shown in the imaginary line. The rebound resilience caused by the expansion and contraction of the curved portion 10 is intensively transmitted to the panel 2a via the seal portion 5 to provide a strong seal. Such a sealing state is reliably achieved regardless of whether the peripheral edge 3a is straight or curved.

As described above, this invention can solve the problem of sealing performance, which is a drawback of conventional weather strips, and its effects are tremendous.

[Brief explanation of drawings]

Figure 1 is a cross-sectional view of this invention, Figure 2 is a cross-sectional view of another example of this invention, Figure 3 is a side view of a car showing where this invention is installed, and Figure 4 is the circle line in Figure 3. FIG. 5 is a sectional view and an explanatory view of the operation of the conventional device. 1... Weather strip, 4... Base, 5...
...Hollow seal part, 6...Inner wall part, 7...Outer wall part, 8...Hollow support part, 10...Bent part, θ,
θ ₁ , θ ₂ ...Inclination angle.

Claims (1)

[Claims for Utility Model Registration] (1) A relatively small perfectly circular hollow seal whose base part is fixed to the periphery of an automobile door and is inclined at approximately 70 degrees toward the body panel on the inside of the vehicle, and whose tip is in elastic contact with the panel. An inner wall part having a slope is provided obliquely, and an outer wall part which is also inclined toward the panel at a smaller angle than the above is provided obliquely on the outside of the vehicle of the base part, and this is connected to the hollow seal part to form a hollow support part. , a bending portion is provided on the hollow side of each connection portion between the hollow seal portion and the inner and outer wall portions of the hollow support portion, and the bent portion is formed integrally with a flexible material, and is fixed to the bent portion of the periphery. A weather strip that does not cause buckling or the like when the door is closed, and has a structure in which the repulsion elasticity of the support part is intensively brought into elastic contact with the body panel through the hollow seal part to seal the body panel. (2) The weather strip according to claim 1, which is a utility model, and has a hollow seal portion with a protruding tongue piece that makes elastic contact with the body panel.