JP2002154332A - Door structure for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a door closing performance in a door structure for an automobile provided with a weather strip sealing a clearance between a door edge part and a vehicle body opening edge part. SOLUTION: A clearance 45 is provided at a connection part of a door frame 4 and a door panel 3 in a passenger compartment side of the weather strip 6, a space in the passenger compartment side of the weather strip 6 and a space part 33 in the door panel 3 are communicated through the clearance 45. Air in passenger compartment side is released into the door panel 3 through the clearance 45 when a door is closed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door structure of an automobile having a weather strip for sealing between a door edge and a vehicle body opening edge.

[0002]

2. Description of the Related Art In general, a door weather strip is mounted on a door edge of an automobile to seal a gap between the door edge and a vehicle body opening edge. FIG. 7 shows an example of a conventional car door structure. A door frame 100 is provided with a door weather strip 102 for sealing between the door frame 100 and an opening edge portion 101 of the vehicle. An opening trim 103 that seals a gap between the door frame 100 and the vehicle body opening edge 101 on the vehicle interior side of the weather strip 102.
Is attached.

Conventionally, in such an automobile door structure, when the door is operated to be closed, immediately before the door is completely closed, the interior of the vehicle interior and the exterior of the interior of the vehicle are not communicated due to the sealing effect of the door weather strip 102. It has a structure. Therefore, the door receives resistance from the air in the cabin,
There is a problem that the door is difficult to close.

In recent years, in the development of automobiles, weight reduction has become an indispensable subject for improving fuel efficiency. Naturally, the door weight tends to be reduced, and the door may be formed of aluminum. Therefore, the above-mentioned problem of closing the door is more likely to occur. As a countermeasure against such a door closing problem, there are measures to reduce the reaction force of the door weather strip and to reduce the seal margin.However, such measures reduce the sealing property of the weather strip such as water leakage. You will lose.

[0005] The present invention has been made in view of such a point, and an object of the present invention is to improve door closing performance without impairing the sealing performance of a weather strip.

[0006]

According to the present invention, there is provided a door structure of an automobile, comprising a weather strip for sealing between a door frame and an opening edge of a vehicle body, wherein the door frame is provided in a door panel having a space inside. A door structure in which a lower end portion is inserted and joined, and a gap is provided at a joint between the door frame and the door panel on the vehicle cabin side with respect to the weather strip, and the gap is smaller than that of the weather strip. The space on the vehicle interior side communicates with the space in the door panel.

In the door structure of the present invention, when the door is closed and the air in the vehicle interior is compressed,
The air can escape to the space in the door panel from the gap provided at the joint between the door frame and the door panel. Therefore, when the door is closed, the resistance that the door receives from the air in the vehicle interior is reduced, and the door closeability is improved.

In the door structure of the present invention, there may be a case where a recess or a step is provided in at least the joint portion of the door frame, and the gap or the gap is secured between the door frame and the door panel by the recess or the step. These recesses and step portions may be provided only in the joint portion, but extending along the longitudinal direction of the door frame can form the door frame with the same cross section in the longitudinal direction, There is an advantage that molding is easy.

In the door structure of the present invention, the space inside the door panel may communicate with the outside of the vehicle.
Since the air inside the vehicle can be evacuated to the outside of the vehicle through the space in the door panel, the door closing performance can be further improved.

In the door structure of the present invention, the weather strip may be a door weather strip which is attached to a door frame and seals a gap between the weather strip and an opening edge of the vehicle body. In this case, an opening trim that seals between the door frame and the door frame may be attached to the opening edge of the vehicle body closer to the vehicle compartment than the door weather strip, and in that case, between the opening trim and the door weather strip. It is preferable that the formed space communicates with the space in the door panel by the gap. Since the sealed space formed between the opening trim and the door weather strip is extremely smaller than the opening trim and is easily compressed when the door is closed, the closed space is formed inside the door panel through the gap. The space can be effectively improved by closing the door.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 and 2 are cross-sectional views of a door structure according to an embodiment of the present invention. FIG. 1 is a cross-sectional view taken along line AA of the automobile 1 shown in FIG. The cross sections are shown respectively.

As shown in FIGS. 3 and 4 (b), the door 2 includes an inner panel 31 and an outer panel 32 and a door panel 3 having a space 33 inside, and a door formed by bending an iron plate. A frame 4 is provided.
The front and rear lower end portions 41 of the door frame 4 have the door panel 3.
Are joined by welding or the like in a state of being inserted into the door panel 3 from an opening provided in an upper side portion of the door panel 3.

As shown in FIG. 2, the door frame 4 has
A holding rail portion 42 is provided, and a door weather strip 6 for sealing between the holding rail portion 42 and the vehicle body opening edge portion 5 is attached to the holding rail portion 42. The door weather strip 6 is a weather strip that is attached to the entire periphery of the door 2, and includes a mounting base 61 fitted to the holding rail 42, and a vehicle body opening edge 5 swelling from the mounting base 61. , A fin-shaped sub-seal portion 63 that is in contact with the vehicle body opening edge 5 outside the hollow seal portion 62, and abuts against the inner surface of the door frame 4 outside the mount base portion 61. And a lip 64.

An opening trim 7 for sealing between the door weather strip 6 and the peripheral edge of the door 2 is attached to the vehicle body opening edge 5 on the vehicle interior side of the door weather strip 6, and the door 2 is in a closed state. , A closed space 8 is formed between the door weather strip 6 and the opening trim 7 on the vehicle interior side. The opening trim 7 includes a mounting base 71 to the body flange 51, a hollow seal portion 72 swelling from the mounting base 71 and abutting on the door frame 4, and a lip 73 swelling from the mounting base 71 to the vehicle interior side. Consists of

The door frame 4 is provided on the vehicle interior side of the holding rail 42 with the hollow seal portion 7 of the opening trim 7.
2 is provided with an abutting portion 43 with which the abutment 2 abuts. This contact portion 43
The door frame 4 extends along the longitudinal direction, and the inside is configured as a hollow hollow portion.

The contact portion 43 of the door frame 4 is provided with a stepped portion 44 which is dropped with respect to the mounting surface of the door weather strip 6. The step portion 44 is provided on the upper surface of the contact portion 43 facing the closed space 8 and extends along the longitudinal direction of the door frame 4. That is, it is formed over the entire length of the door frame 4.

As shown in FIGS. 1 and 3, at the joint between the door frame 4 and the door panel 3, a gap 4 is formed between the inner panel 31 of the door panel 3 and the step portion 44.
5 are formed. The space 45 connects the space closer to the vehicle interior than the door weather strip 6 with the space 33 in the door panel 3. Specifically, the closed space 8 formed between the opening trim 7 and the door weather strip 6 is communicated with the space 33 in the door panel 3 by the gap 45. Since the space 33 of the door panel 3 is normally communicated outside the vehicle, the space closer to the vehicle interior than the door weather strip 6 is communicated outside the vehicle via the space 33 in the door panel 3. .

In the door structure of the present embodiment configured as described above,
When the door 2 is closed, immediately before the door 2 is completely closed, the gap between the peripheral edge of the door 2 and the opening edge 5 of the vehicle body is sealed by the door weather strip 6, and the air inside the vehicle compartment is compressed. Trying to be. Then, the air flows into the gap 45 provided at the joint between the door frame 4 and the door panel 3.
From the door panel 3 to the space 33 inside the door panel 3 and can be further discharged from the door panel 3 to the outside of the vehicle. Therefore, when the door 2 is closed, the resistance that the door 2 receives from the air in the vehicle compartment becomes extremely small, and the door closeability is greatly improved.

FIGS. 5 and 6 are views showing a modified example of the sectional shape of the door frame 4. FIG. In this example, door frame 4
A concave groove 46 extending along the longitudinal direction of the door frame 4 is provided on the upper surface of the contact portion 43 of the door frame 4. The concave groove 46 allows a gap 45 between the door panel 3 and the door panel 3 at the joint between the door frame 4 and the door panel 3. Is formed. Also in this case, similarly to the above-described embodiment, the air inside the vehicle cabin can be released through the gap 45, and the door closing property can be improved.

In the above-described embodiment, the closed space 8 is formed on the interior side of the weather strip 6 by the opening trim 7. However, the present invention is applicable to a case where such a closed space is not formed. Is done. However, when the small closed space 8 is formed between the opening 2 and the opening trim 7, the pressure tends to increase when the door 2 is closed, which is more effective.

[0022]

According to the automobile door structure of the present invention, when the door is closed, the air inside the vehicle compartment can escape into the door panel from the gap provided at the joint between the door frame and the door panel. As a result, the door closing performance can be improved, and the sealing performance of the weather strip is not impaired.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of an automobile door structure according to an embodiment of the present invention.

FIG. 2 is a sectional view of the door structure in a roof side portion of the automobile.

FIG. 3 is an enlarged perspective view of a main part of the door structure.

FIG. 4A is a side view of an automobile, and FIG. 4B is a perspective view of a door.

FIG. 5 is a sectional view of a door structure according to another embodiment.

FIG. 6 is a cross-sectional view of a door structure in a roof side portion according to another embodiment.

FIG. 7 is a sectional view of a conventional door structure.

[Explanation of symbols]

 3 ... door panel 4 ... door frame 5 ... body opening edge 6 ... door weather strip 7 ... opening trim 8 ... closed space 33 ... space 41 ... door frame lower end 44 ... step 45: gap 46: groove

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tsunohiro Yano 1-17-18 Edobori, Nishi-ku, Osaka-shi, Osaka Toyo Tire & Rubber Co., Ltd. (72) Hiroyuki Masuda 1-1-17 Edobori, Nishi-ku, Osaka-shi, Osaka No. 18 Toyo Tire & Rubber Co., Ltd. F term (reference) 3D201 CA03 CA23 DA06 DA09 DA10 DA23 DA31

Claims (6)

[Claims] 1. A door structure comprising a weather strip for sealing between a door frame and an opening edge of a vehicle body, wherein a lower end of the door frame is inserted into and joined to a door panel having a space inside. A gap is provided at a joint between the door frame and the door panel on the vehicle interior side of the weather strip, and a space on the vehicle interior side of the weather strip and a space in the door panel are formed by the gap. The door structure of an automobile characterized by communicating with 2. The door frame according to claim 1, wherein a concave portion or a step portion is provided at least at the joint portion, and the concave portion or the step portion secures the gap between the door frame and the door panel. Car door structure. 3. The vehicle door structure according to claim 3, wherein said recess or said step portion extends along a longitudinal direction of said door frame. 4. The vehicle door structure according to claim 1, wherein a space in the door panel communicates with the outside of the vehicle. 5. The door structure for an automobile according to claim 1, wherein said weather strip is a door weather strip which is attached to said door frame and seals between said door frame and an opening edge of a vehicle body. 6. An opening trim for sealing a space between the door frame and the door frame at a position closer to the vehicle interior than the door weather strip is provided at the opening edge of the vehicle body, and between the opening trim and the door weather strip. 6. The vehicle door structure according to claim 5, wherein a space formed in the door panel communicates with a space in the door panel by the gap.