JPH0549439U - Automotive door weather strip - Google Patents

Abstract

(57) [Abstract] [Purpose] By providing a structure for a door weather strip mounted on the outer periphery of a vehicle door frame, which can prevent wind noise around the door frame without increasing the door closing force. is there. A door weather strip 4 having a base portion 41 attached to the outer periphery of a door frame 10 and a hollow seal portion 42 that is pressed against the door opening edge 2 of an automobile body when the door is closed. A lip-shaped sub-seal portion 44 extending from the base portion 41 is formed at an outer position, and a bent portion 441 that is bent toward the vehicle interior in a substantially U-shaped cross section is formed at a tip portion of the sub-seal portion 44, and elastically deforms when the door is closed. The seal portion 42 is brought into contact with the tip of the bent portion 441 of the sub seal portion 44.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a door weather strip that is mounted on the outer periphery of a vehicle door frame and seals between the door frame and the door opening edge of the vehicle body when the door is closed.

[0002]

[Prior Art]

 As this type of door weather strip, as shown in FIG. 4, a base portion 41 attached to a retainer 12 provided along the outer periphery of the door frame 10 and a base opening portion 41 protruding upward from the base portion 41 to close the door when the door is closed. A door weather strip 4A having a hollow seal portion 42 that elastically hits 2 is used.

However, in this door weather strip 4A, a deep gap C is formed between the door opening edge 2, the seal portion 42 and the projecting edge 11 of the door frame 10 to generate wind noise when the vehicle is running. Cause of. Therefore, the engaging lip 43 projecting from the base 41 at the vehicle outer side position of the base 41 is further extended upward along the projecting edge 11 of the door frame 10 so as to extend between the projecting edge 11 and the door opening edge 2. There is a lip-shaped sub-seal part that closes the mouth. However, the shape stability of this sub-seal portion is not always sufficient, and the tip may not properly contact the door opening edge 2 due to variations in door construction.

Further, as shown in FIG. 5, there is a weather strip 4B in which a root portion of the sub-seal portion 44 is a hollow portion 440 which bulges from a side surface of the seal portion 42 on the vehicle exterior side (for example, Japanese Utility Model Publication No. 59-180916). issue). However, in this weather strip 4B, when the seal portion 42 comes into contact with the door opening edge 2 and is pushed out to the outside of the vehicle when the door is closed, the hollow portion 440 is pressed against the projecting edge 11 of the door frame 10, so that the door closing force is increased. There is a problem of getting bigger.

[0005]

[Problems to be solved by the device]

 Therefore, an object of the present invention is to provide a door weather strip that does not increase the door closing force, has a stable shape when the door is closed, and has a sub-seal portion that can prevent wind noise. It is a thing.

[0006]

[Means for Solving the Problems]

 As shown in FIG. 2A, the present invention, as shown in FIG. 2 (A), extends outside the hollow seal portion 42 of the door weather strip 4 independently of the seal portion 42 from the base portion 41 and has the upper end portion inside the vehicle. 2B, a lip-shaped sub-seal portion 44 forming a bent portion 441 that is bent in a substantially U-shaped cross section is formed. As shown in FIG. 2B, the seal portion 42 elastically deformed when the door is closed is the sub-seal portion. It is characterized in that it comes into contact with the tip of the bent portion 441 of 44.

[0007]

[Action]

 When the door is closed, the hollow seal portion 42 is pushed by the door opening edge 2 and the upper portion approaches the sub seal portion 44. Then, when the door is completely closed, the upper portion of the seal portion 42 contacts the tip of the bent portion 441 of the sub seal portion 44. As a result, the opening of the gap C between the door frame 10 and the door opening edge 2 is closed.

[0008]

【Example】

 In the van type vehicle shown in FIG. 1, a door weather strip is attached to the outer periphery of the door frame 10 of the door 1. As shown in FIG. 2 (A), the door weather strip 4 is an extruded body of sponge rubber, and includes a base portion 41, a hollow seal portion 42, and a lip-shaped sub seal portion 44. It is attached to a retainer 12 provided along the outer periphery of the door frame 10.

The base portion 41 is hollow, and a seal portion 42 projects obliquely upward from the inside of the vehicle from a position inside the vehicle at the upper end thereof. The sub-seal portion 44 extends upward from a position outside the vehicle at the upper end of the base portion 41 along the protruding edge 11 of the door frame 10. The upper end portion is located at the upper end position of the protruding edge 11 in the vehicle direction, that is, the seal portion. A bent portion 441 is formed that is bent in a U-shaped cross section in the 42 direction. The sub-seal portion 44 is independent of the seal portion 42, and the tip of the bent portion 441 faces the seal portion 42 with a gap.

In the door weather strip 4 having the above structure, when the seal portion 42 is pressed against the door opening edge (front pillar in the illustrated example) 2 as shown in FIG. The seal portion 42 has a crushed shape and its upper portion is pushed out toward the outside of the vehicle. On the other hand, in the sub-seal portion 44, the inner side surface of the bent portion 441 makes elastic contact with the door opening edge 2, and when the door is completely closed, the tip of the sub-seal portion 44 comes into contact with the upper portion of the seal portion 42 pushed outward in the vehicle. ..

The gap C between the door frame 10 and the door opening edge 2 is closed by the bent portion 441 of the sub-seale portion 44 at the opening, so that the generation of wind noise when the vehicle is running is prevented. .. Further, in the process of closing the door, the seal portion 42 does not push the projecting edge 11 of the door through the sub seal portion 44, and therefore the door closing force does not increase. Further, since the tip of the sub-seal portion 44 is engaged with the seal portion 42 when the door is closed, the shape of the sub-seal portion 44 is stable.

FIG. 3 shows an upper side portion of the door frame 10, and a door opening edge 2 facing the upper side portion is constituted by a roof side. 21 is a drip channel. Also in this case, the structure and the effect of the door weather strip 4 are substantially the same as the above.

[0013]

[Effect of the device]

 However, according to the door weather strip of the present invention, it is possible to prevent wind noise from being generated on the roof side including the front pillar, and the closing force when the door is closed does not increase.

[Brief description of drawings]

FIG. 1 is a side view of a door portion of an automobile to which a weather strip of the present invention is applied.

FIG. 2 is a cross-sectional view when the door is open and when the door is closed at a position along line II-II in FIG.

FIG. 3 is a cross-sectional view when the door is closed at a position along line III-III in FIG.

FIG. 4 is a sectional view of a conventional door weather strip when the door is closed.

FIG. 5 is a cross-sectional view of another conventional door weather strip when the door is closed.

[Explanation of symbols]

 1 Door 10 Door Frame 2 Door Opening Edge 4 Door Weather Strip 41 Base 42 Sealing Part 44 Sub Sealing Part 441 Bending Part

Claims (1)

[Scope of utility model registration request] 1. A weather strip for an automobile, comprising: a base portion attached to an outer periphery of a door frame; and a hollow weather strip portion protruding upward from the base portion and elastically contacting a door opening edge of an automobile body when the door is closed. A lip-shaped sub-seal portion, which extends upward from the base portion and is independent of the base portion, is formed on the vehicle outer side than the portion, and a bent portion having a substantially U-shaped cross section that bends in the vehicle inward direction is formed at the tip of the sub-seal portion. A door weather strip for an automobile, wherein the seal portion elastically deformed when the door is closed comes into contact with the tip of the bent portion of the sub seal portion.