JP2010208514A - Door weather strip - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent water leakage due to flowing of water entering from the space between a sash projecting edge and a back face lip to the vehicle inside during raining or car washing, in a door weather strip having the sash projecting edge formed into a shape projecting toward a body when closing a door and the back face lip in elastic contact with a corner of the sash projecting edge and a projecting part extending toward the vehicle inside. <P>SOLUTION: A gutter lip 22 is formed integrally with a base bottom 3 to form a water passage 23 having a substantially U-shaped cross section. Water intruded under the back face lip 7 flows into the water passage 23 and is discharged to the vehicle outside through the water passage 23 without flowing into the vehicle inside by getting over the gutter lip 22. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a door weather strip that is attached to a door sash of an automobile and elastically contacts with the body when the door is closed to seal between the body and the body.

  FIG. 2 shows an example of a conventional door weather strip in the cross section taken along the line AA of the automobile shown in FIG. 1. The base 3 is attached to the retainer 2 of the sash 1 and is integrally formed with the base 3. The hollow seal portion 5 and the seal lip 6 that elastically contact the body 4 when the door is closed to seal the body 4 and the sash protruding edge 1a that protrudes toward the body 4 when the door is closed are laterally directed to the inside of the vehicle. And a rear lip 7 that elastically contacts the corners of the sash protrusion 1a and the protrusion 1b and seals between the sash 1 on the protrusion 1b that forms part of the retainer 2.

  FIG. 3 shows another example of a door weather strip disclosed in Patent Document 1, which is attached to the base surface 11a of the sash 11, and elastically contacts the body 12 when the door is closed to seal between the body 12. The hollow seal portion 13 and the seal lip portion 14 project from the seal lip 14 toward the outside of the vehicle, and elastically contact the projection 11c that projects from the protruding edge 11b of the sash 11 toward the inside of the vehicle. A back lip 15 to be sealed, a hook 16 fitted from below to a bent end portion 11d that bends downward from the end of the protruding portion, protrudes obliquely downward from the base of the hook 16, and elastically contacts the base bottom surface 11a of the sash 11. And a lip 17 that seals between the sash 11 and the sash 11.

JP 2008-284933 A

  In the conventional door weatherstrip shown in FIG. 2, the sealing performance by the back lip 7 is reduced due to variations in the shape of the sash 1 and the weatherstrip, so that the water at the time of rainfall or car wash can be shown by the arrow in FIG. It may enter from between the edge 1a and the rear lip 7 and enter the retainer 2, and may flow through the retainer and leak into the vehicle interior from the portion where the retainer of the sash terminal is cut.

  The door weatherstrip hook 16 shown in FIG. 3 is provided to engage and lock the bent end portion 11d of the protrusion 11c to increase the assembling force of the weatherstrip to the sash 11. Is engaged and locked to the bent end portion 11d to restrain the movement of the seal lip 14 in and out of the vehicle, and the protruding portion 11c is sandwiched between the back lip 15 and the hook 16 so as to move the seal lip 14 in the vertical direction. The hook 16 does not have a function as a water channel in which the bent end portion 11d is accommodated and the water that has entered the back lip 15 flows.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a door weather strip that prevents water that has entered a back lip from leaking into the vehicle interior.

The invention according to claim 1 includes a base portion attached to a door sash of an automobile by attachment means, a hollow seal portion and a seal that are integrated with the base portion and elastically contact the body when the door is closed to seal between the body and the body. A lip and a rear lip that elastically contacts the sash protruding edge that protrudes toward the body when the door is closed, or at least one of the sash protruding edge and the protruding portion that protrudes inward from the sash protruding edge. The door weather strip has a rain gutter lip that forms a substantially U-shaped water channel through which the water flows under the back lip and receives the water submerged in the back lip.
In the invention according to claim 2, the back lip of the invention according to claim 1 is elastically contacted with the protruding portion extending straightly from the sash protruding edge toward the vehicle inner side, and the rain gutter lip is in contact with the protruding portion from below. The projecting portion is sandwiched between the rear lip and the gutter lip.

  According to the invention according to claim 1, the water that has dived through the back lip flows into the water channel, flows through the water channel, and is discharged outside the vehicle. Since part of the sash does not fit, the water flow area is sufficiently secured and the function as a water channel is ensured, and the received water can be drained out of the vehicle without fail. Assembling becomes easy.

  According to the second aspect of the invention, the support of the weather strip, particularly the seal lip, is stabilized by sandwiching the protruding portion between the rear lip and the hook, and the protruding portion extends straight toward the vehicle interior and fits into the water channel. Since it does not mean, assembly to the sash becomes even easier.

A side view of an automobile. Sectional drawing of the conventional door weather strip in the AA line of FIG. Sectional drawing of the weather strip of another conventional example. Sectional drawing of the door weather strip concerning the present invention in the AA line of FIG. FIG. 2 is a perspective view of a mold forming part in a part of FIG. 1. FIG. 2 is a perspective view of a mold forming part in parts b and c of FIG. 1. The perspective view which shows the deformation | transformation aspect of the shaping | molding part shown in FIG. The figure which shows the principal part of another example of a door weather strip attachment aspect.

  Hereinafter, a door weather strip according to an embodiment of the present invention will be described with reference to the drawings. In the figure, the same reference numerals are assigned to the same structural parts as the weather strip shown in FIG.

  FIG. 4 shows a door weather strip 21 according to the present invention. In the example shown in FIG. 4, the base portion 3 is integrally formed with the projecting portion 1b on the sash 1 in the example shown in FIG. Although it is attached to the retainer 2, it may be attached to the base surface 11a of the sash 11 as shown in FIG. 3 by another mounting means, for example, a clip, or the base surface of the sash using a double-sided adhesive tape. You may attach to.

A water channel 23 having a substantially U-shaped cross section is formed in the base portion 3 by a gutter lip 22 formed integrally on the outside of the vehicle, and the tip of the gutter lip 22 extends straightly from the sash protruding edge 1a toward the vehicle inner side. It is applied to the protrusion 1b from below.
The back lip 7 is configured to elastically contact the corners of the sash protruding edge 1a and the protruding portion 1b so as to seal between the sash 1 from obliquely above.

  FIG. 4 shows a cross-sectional shape of the extruded weather strip in the cross-section taken along the line AA of FIG. Formed.

  FIG. 5 shows a mold forming part 31 in the part a of FIG. 1, and FIG. 6 shows a mold forming part 41 in the parts b and c. The rain gutter lip forming the water channels 33 and 43 in the base parts 32 and 42, respectively. 34 and 44 are formed, and after the water that has entered the rear lips 35 and 45 flows through the water channels 33 and 43, it is discharged from the end of the gutter lip as shown by the arrows in the figure. Although not shown, rain gutter lips are similarly formed in the mold forming portions in the portions d and e of FIG.

  A mold forming portion 47 shown in FIG. 7 is a modification of the mold forming portion 41 shown in FIG. 6. In the mold forming portion 41, the end of the water channel 43 is closed by the shielding plate 48 and in front of the shielding plate 48. A cut opening 49 is formed so that water passing through the water channel 43 is drained outside the vehicle.

  According to the weather strip of the present embodiment, the water that has entered from between the sash protruding edge 1a and the back lip 7 shown in FIG. 4 flows into the water channel 23, and passes through the water channel 23 to be ae portions shown in FIG. It is discharged to the outside of the vehicle through the water channels 33 and 43 formed in the mold forming portions 31 and 41, and the tip of the rain gutter lip hits the protruding portion 1b from the lower side, so that it passes over the gutter lip 22 and enters the vehicle. There is no water leakage, and the protrusion 1b is sandwiched between the rear lip 7 and the gutter lip 22 that extend obliquely downward from above to the protrusion 1b, so that the support of the seal lip 6 is stabilized, and the protrusion 1b Since it extends straight inward and is not inserted into the water channel 23, a sufficient water flow area is ensured and drainage can be performed smoothly, and between the rear lip 7 and the gutter lip 22. Protruding into In the mold forming portion 47 shown in FIG. 7, the weather strip 21 can be easily assembled by simply pushing the weather strip 21 so that 1b enters, and the rain gutter lip 22 is hardly entangled during the assembly. Since the end of the water channel 43 is blocked by the shielding plate 48, it is possible to prevent intrusion of wind, water and the like through the water channel 43 from the outside of the vehicle.

  FIG. 8 shows a part of the weather strip 21 attached to the sash 9 that does not have the protruding portion 1b. The back lip 7 and the gutter lip 22 are in elastic contact with the sash protruding edge 1a, and the back lip 7 is submerged. Water flows into the water channel 23.

  Also in the weather strip of the present embodiment, the water that has entered from between the sash protruding edge 1a and the back lip 7 flows through the water passage 23 and is discharged and can be prevented from leaking to the inside of the vehicle. The distribution area is sufficiently secured, drainage can be performed without any trouble, and since there is no protrusion 1b, the weather strip can be more easily assembled.

1, 9 ··· Sash 1a · · Sash protruding edge 1b · · Projection portion 2 · · Retainer 3, 32, 42 · · Base portion 4 · · Body 5 · · Hollow seal portion 6 · · Seal lip 7, 35, 45 ·· Back lip 21 · · Door weather strips 22, 34 and 44 · · Rain gutter lips 23, 33 and 43 · · Channels 31, 41 and 47 · · Molding portion 48 · · Screening plate 49 · · Cut

Claims (2)

  Base portions 3, 32, 42 attached to the door sash 1, 9 of the automobile by attachment means 2, and integrated with the base portions 3, 32, 42, elastically contact the body 4 when the door is closed, and between the body 4 The hollow seal portion 5 and the seal lip 6 are sealed against the sash protruding edge 1a that protrudes toward the body 4 when the door is closed, or the sash protruding edge 1a and the sash protruding edge 1a are located on the inner side of the vehicle. In the door weather strip having the rear lips 7, 35, 45 that elastically contact at least one of the projecting protrusions 1b, the water that has dipped the rear lips 7, 31, 45 is received below the rear lips 7, 35, 45. A door weather strip having rain gutter lips 22, 34, 44 for forming water channels 23, 33, 43 having a substantially U-shaped cross section.   The back lip elastically contacts the projecting portion 1b extending straight from the sash protruding edge 1a toward the vehicle interior, and the rain gutter lip 22 hits the projecting portion 1b from the lower side so that the back lip 7 and the gutter lip 22 The door weather strip according to claim 1, wherein the protruding portion 1 b is sandwiched between the door weather strip and the door weather strip.