JPS6144519Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a seal structure for a back door in an automobile.

Some automobile back doors consist of one upper door and one or two lower doors, but in this type of back door, the joint between the upper and lower doors, especially at the corner of each door at the joint, Since the weather strip rubber provided for both doors breaks off, rainwater and the like can easily enter the interior of the body through these parts.

The present invention was devised in view of the above points, and aims to provide a sealing structure for a back door that can reliably seal the joint between the upper and lower doors without allowing rainwater to enter through the joint. It is.

More specifically, it consists of a first weather strip that seals between the upper door and the door opening of the vehicle body, and a second weather strip that seals between the lower door and the upper door, and the first weather strip is attached to the periphery of the door opening of the vehicle body. Attaching the second weatherstrip to the lower edge of the upper door, the first weatherstrip having a corner portion having a reduced thickness and an overlapping portion, the second weatherstrip having: It is characterized in that a lip that overlaps is provided at the corner portion.

The present invention will be explained below with reference to embodiments shown in the drawings.
In the figure, 1 is the body of an automobile, and a large door opening 2 is provided at the rear of the body 1. An upper door 3 consisting of one door is provided in the upper part 2a of this opening 2.
The back door 6 is constructed by attaching two lower doors 4 and 5 to the lower part 2b, which has become slightly narrower.
is positioned in the upper space 2a of the opening 2, and the upper end of the door 3 is supported by the upper edge of the opening 2 via the hinge 7, so that it can be opened and closed freely in the vertical direction, and the lower door 4, 5 is located in the lower space 2b of the opening 2, and one side edge in the width direction of each door 4, 5 is supported by both side edges of the space 2b via hinges 8, 9, so that the doors can be opened horizontally. It is designed to open and close in the same way.

The back door 6 is then sealed as follows. That is, first, a first long rubber weather strip 10 having a substantially U-shaped mounting portion 10a and a hollow bead-shaped seal portion 10b in cross section is formed, and the mounting portion 10a of the weather strip 10 is
The seal portion 10b is attached to the mounting wall 1a which is formed upright along the circumference of the upper space 2a in the door opening 2 so as to face outward from the body 1, and the upper door 3 is placed in contact with the seal portion 10b. The weather strip 10 is connected to the lower corner 2c of the upper space 2a of the opening 2 at both lengthwise ends of the weather strip 10 to seal between the opening 2 and both ends and the upper end of the door 3. A corner portion 10d having a protruding piece 10c having an L-shaped cross section is integrally formed at the corresponding location, and this protruding piece 10c is provided along the outer corner portion of the side wall 1b extending inwardly at the corner portion 2c, and The hanging piece of the projecting piece 10c is made thin to form an overlapping part 10e of a second weather strip, which will be described later.

Further, on the outer edge in the width direction of the horizontal mounting portion 11a,
A first lip 11b whose tip is directed inwardly and downwardly is integrally formed, and a second lip 11c which is L-shaped and extends downward is integrally provided on the inner edge of the mounting portion 11a. 2 weather strips 11 are formed, and the mounting portion 11a of the weather strip 11 is attached to the mounting wall 3a installed horizontally on the inner surface side of the lower end of the first door 3. When the first door 3 is closed, the mounting portion 11a of the weather strip 11 is Lip 1
1b is elastically brought into contact with the upper outer surfaces of the second and third doors 4, 5, a seal is formed between the upper door 3 and the lower door 4, 5, and the length of the second weather strip 11 is on both sides,
A third lip 11d with a thin tip is attached to the first lip 11d.
Corner portion 10d of weather strip 10
The third lip 11d and the overlapping portion 10e are formed integrally so as to overlap with each other, and the weather strip rubber at both widthwise ends of the upper door 3 and the lower doors 4 and 5 is cut off. This is to seal the area continuously.

In addition, appropriate sealing means shall be provided between the widthwise outer edges of the lower doors 4 and 5 and the door opening 2, and between the lower edges of each of the doors 4 and 5 and the opening 2. .

The present invention is constructed as described above, and when opening the rear opening 2, such as when loading and unloading cargo into the body 1, the upper door 3 of the back door 6 is opened upward, and the upper door 3 is opened as necessary. In the open state, the lower doors 4, 5 are opened outward, and on the other hand, when the opening 2 is closed, the lower doors 4, 5 are opened outward.
, and then close the upper door 3.

When the doors 3, 4, and 5 are closed, the upper end and both side edges of the upper door 3 are connected to the body 1.
The space between the lower end of the upper door 3 and the upper end of the lower doors 4 and 5 is sealed by a second weather strip 11. 3 and lower doors 4 and 5 at both ends in the width direction, where the third lip 11d of the second weatherstrip 11 overlaps the overlapping part 10e of the corner part 10d of the first weatherstrip 10. This allows for continuous sealing.

As explained above, in the seal structure of the present invention,
A first weather strip is attached to the body side, and one door is sealed by the weather strip, and a second weather strip is provided between this door and another door to seal each door. The first weather strip is provided with a corner portion having an overlapping portion, and the second weather strip is provided with a corner portion having an overlapping portion.
Since the overlapping part is provided with a lip that overlaps with the overlapping part of the corner part, the seal at the corner of the joint of each door will not be broken due to the overlapping of the lip with respect to the overlapping part of the corner part, and as a whole, rainwater will be removed from between each door and the body. It is possible to reliably prevent the intrusion of such things.

[Brief explanation of drawings]

Fig. 1 is a partially omitted perspective view of an automobile body implementing the seal structure of the present invention, Fig. 2 is an enlarged perspective view of the same essential parts, and Figs. 3 and 4 are Fig. 1 A-A, B-B.
FIG. 3 is an enlarged cross-sectional view of the line. 1... Body, 3, 4, 5... Door, 6... Back door, 10... First weather strip, 10
d...corner part, 10e...overlapping part, 11...
...Second weather strip, 11d...Rip.

Claims (1)

[Scope of utility model registration request] A back door seal structure consisting of one upper door and one or two lower doors, the first weather strip sealing between the upper door and the door opening of the vehicle body, the lower door and the upper door. the first weather strip is attached to the periphery of the door opening of the vehicle body, the second weather strip is attached to the lower edge of the upper door, and the first weather strip is attached to the lower edge of the upper door; The first weather strip is provided with a corner portion having a thinner overlapping portion, and the second weather strip is provided with a lip that overlaps with the overlapping portion of the corner portion. Back door seal structure.