JP2012153249A - Vehicle door sealing structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle door sealing structure that prevents a reduction in sealing performance and improves door opening/closing feeling.SOLUTION: In a portion of a door weather strip 11 mounted on an outer rim of a hinged rear door 1, the portion corresponding to the rear edge of the rear door 1, a main seal lip 13 and a sub-seal lip 14 are formed vertically across a door waist part. A portion of the sub-seal lip 14 lower than the door waist part separates from a vehicle-side door opening edge 5 in a free state when the door is closed, while rocking toward the inside of the vehicle due to the pressure of water flowing from the outside of the vehicle into a gap between the rear door 1 and the vehicle-side door opening edge 5, to come in contact with the vehicle-side door opening edge 5 for sealing the gap between the outside and inside of the vehicle.

Description

  The present invention relates to a seal structure for an automotive door that seals the interior and exterior of a vehicle interior when a door is closed with a door weather strip attached to an outer peripheral edge of a hinge-type automotive door, and more particularly to a side opposite to a door hinge of an automotive door. The present invention relates to a seal structure at an end edge of the seal.

  For example, a structure described in Patent Document 1 has been proposed as a seal structure for this type of automobile door. The automobile door described in Patent Document 1 is a front hinged door with a sash, and a closed-loop door weather strip attached to the outer peripheral edge of the automobile door is attached to the door sash of the automobile door. The sash mounting portion and the door body mounting portion mounted on the door body of the automobile door have different cross-sectional shapes. That is, the sash mounting part and the door body mounting part are common in that both have a hollow seal lip that abuts against the vehicle body side door opening edge when the door is closed, A tongue-like sub-seal lip that contacts the vehicle body side door opening edge at a position outside the passenger compartment is formed on the sash mounting portion, but is not formed on the door main body mounting portion. And the sash mounting part and the door main body mounting part are connected by the shaping | molding part formed in the position corresponded to a door waist part.

  The molded part on the opposite side of the door weather strip from the door hinge of the automotive door, that is, the rear end side, is mounted across the door waist of the automotive door, and is similar to the sash mounting portion. A hollow seal lip and a tongue-shaped sub seal lip are provided, and the sub seal lip disappears at a position corresponding to the door waist portion of the automobile door. In other words, at the end of the automobile door opposite to the door hinge, the interior and exterior of the vehicle are sealed only with a hollow seal lip at a position below the door waist.

JP 2002-160534 A

  In the technique described in Patent Document 1, the interior and exterior of the vehicle door are sealed only by a hollow seal lip at a position below the door waist portion at the edge opposite to the hinge portion of the automobile door. Therefore, when relatively high-pressure water such as high-pressure car wash water flows from the outside of the passenger compartment between the automobile door and the vehicle body side door opening edge, the water directly enters the seal lip. As a result, the sealing performance is deteriorated as compared with the portion of the automobile door above the door waist. Therefore, considering the sealing performance inside and outside the vehicle interior, it is desirable to extend the sub seal lip to a position below the door waist portion of the door for the automobile.

  However, since the part below the door waist part of the door for automobiles is formed so as to protrude outside the compartment from the part above the door waist part of the doors for automobiles, The portion of the door weather strip below the door waist is accommodated in a relatively deep position in the gap between the automobile door and the vehicle body side door opening edge when the door is closed. Become. Therefore, when the sub seal lip is extended to a position below the door waist portion of the automobile door, and the sub seal lip is set to abut against the vehicle body side door opening edge when the door is closed, the automobile door During the opening / closing operation of the sub seal lip, the portion below the door waist portion enters or exits the vehicle body side door opening while sliding on the vehicle body side door opening edge. There is a possibility that the opening / closing operation force required for the opening / closing operation of the door will increase and the door opening / closing feeling will deteriorate. Since the sub-seal lip is formed to be inclined toward the outside of the passenger compartment, the increase in the opening / closing operation force as described above becomes particularly remarkable during the door opening operation.

  The present invention has been made in view of the problems as described above, and suppresses a decrease in sealing performance of a portion below the door waist portion at the edge opposite to the door hinge of the automobile door. On the other hand, an object of the present invention is to provide an automobile seal structure that improves the door opening and closing feeling.

  The invention according to claim 1 is a hollow-shaped projecting from a mounting base portion of the door weather strip on at least a portion of the door weather strip mounted on the outer peripheral edge of the hinged automobile door at a portion opposite to the door hinge. A main seal lip and a tongue-like sub-seal lip that protrudes while tilting from the position outside the vehicle interior to the vehicle interior outside the main seal lip of the mounting base straddles the top and bottom of the door waist. It is assumed that the main seal lip and the sub-seal lip are in contact with the vehicle-side door opening edge when the door is closed to seal the exterior of the vehicle interior. .

  In addition, the portion of the sub seal lip above the door waist portion is formed so as to be always in elastic contact with the vehicle body side door opening edge when the door is closed, and the door waist portion of the sub seal lip. When the door is closed, the lower portion is separated from the vehicle body side door opening edge in a free state while the pressure of water flowing from the outside of the vehicle compartment into the gap between the vehicle door and the vehicle body side door opening edge. By swinging toward the vehicle interior side, it is formed so as to abut on the vehicle body side door opening edge.

  Therefore, in the first aspect of the present invention, a portion of the sub seal lip below the door waist is formed so as to be separated from the vehicle body side door opening edge in a free state when the door is closed. The sub seal lip does not slide with the vehicle body side door opening edge during the opening / closing operation of the automobile door, and an increase in the door opening / closing operation force can be prevented.

  If relatively high-pressure water flows from the outside of the passenger compartment between the edge of the automobile door opposite to the door hinge and the door opening edge of the vehicle body, the sub seal lip is brought into contact with the pressure of the water. The part below the door waist part swings toward the vehicle interior side and comes into contact with the vehicle body side door opening edge, so that the sealability of the part below the door waist part is sufficiently secured. become. If the water flowing from the outside of the passenger compartment between the automobile door and the vehicle body side door opening edge is so low that the sub seal lip does not swing, the main seal lip moves the vehicle interior side. Inflow of water will be prevented.

  In addition, in order to ensure the above-described swinging of the sub seal lip, the inclination angle of the sub seal lip with respect to the outer surface of the vehicle body is 20 ° to 20 °. It is desirable that the angle is set to 70 °.

  According to a third aspect of the present invention, there is provided an auxiliary lip that protrudes from the intermediate portion in the protruding direction of the sub seal lip toward the outside of the passenger compartment and forms a pressure receiving groove with the tip end portion of the sub seal lip. When the door weather strip is provided, when relatively high-pressure water flows from the outside of the passenger compartment between the automobile door and the vehicle body side door opening edge, the water is received by the pressure receiving groove, The above-described swinging of the sub seal lip can be made more reliable.

  Further, as in the invention according to claim 4, when the portion excluding the root portion of the sub seal lip is formed thicker than the root portion of the sub seal lip, the rigidity of the sub seal lip is improved. Therefore, when the sub seal lip receives water pressure, the tip end side of the sub seal lip is not reversed so as to be directed toward the vehicle interior side, so that water can enter the vehicle interior side more reliably. Can be prevented.

  On the other hand, as in the invention according to claim 5, the extending portion that extends from the base portion of the sub seal lip toward the outside of the passenger compartment at a position below the door waist portion of the door weather strip. When the extending portion is fixed to the automobile door, it is possible to prevent water from entering the vehicle interior via the door weather strip and the automobile door.

  According to the first aspect of the present invention, a portion of the sub seal lip below the door waist is separated from the vehicle body side door opening edge in a free state when the door is closed. The door hinge is one of the doors for automobiles because it contacts the vehicle body side door opening edge by swinging toward the vehicle interior side with the pressure of water flowing from the outside of the vehicle compartment into the gap with the side door opening edge. It is possible to improve the door opening and closing feeling while suppressing the deterioration of the sealing performance at the edge opposite to the side and below the door waist.

  In particular, according to the invention described in claims 2 to 3, the sub seal lip as described above is more reliably rocked, and is an edge of the automobile door opposite to the door hinge, and It is possible to more effectively suppress the deterioration of the sealing performance in the portion below the door waist.

  According to the invention of claim 4, by improving the rigidity of the sub-seal lip, when the sub-seal lip receives water pressure, the tip side of the sub-seal lip is directed toward the vehicle interior side. Therefore, it is more effective to reduce the sealing performance at the edge of the automobile door opposite to the door hinge and below the door waist. Can be suppressed.

  Furthermore, according to the invention described in claim 5, it becomes possible to prevent water from entering the interior of the vehicle interior between the door weather strip and the automobile door. There is a merit that it is possible to improve the sealing performance at the opposite end edge and the lower portion of the door waist.

The side view which shows the rear-end part vicinity among the rear doors of a motor vehicle as the 1st Embodiment of this invention. The perspective view which shows the rear-end end part vicinity of the rear door shown in FIG. The perspective view which shows the door weather strip shown in FIG. 1 alone. Sectional drawing along the AA line of FIG. Sectional drawing along the BB line of FIG. Sectional drawing along CC line of FIG. Sectional drawing along the DD line | wire of FIG. It is a figure which shows the 2nd Embodiment of this invention, Comprising: The principal part enlarged view of the cross section corresponded in the BB line of FIG. It is a figure which shows the 3rd Embodiment of this invention, Comprising: The principal part enlarged view of the cross section corresponded in the BB line of FIG.

  FIGS. 1 to 7 are views showing a first preferred embodiment of the present invention, in which FIG. 1 is a side view showing a rear end portion of a rear door which is an automobile door, and FIG. 2 is a rear door shown in FIG. FIG. 3 is a perspective view showing a rear end portion of the door, and FIG. 3 is a view showing a door weather strip alone. 4 is a sectional view taken along line AA in FIG. 3, FIG. 5 is a sectional view taken along line BB in FIG. 3, and FIG. 6 is a sectional view taken along line CC in FIG. FIG. 7 is a cross-sectional view taken along the line DD in FIG. In FIG. 2, the door weather strip is omitted for convenience.

  As shown in FIGS. 1 and 2, a rear door 1 that is a door for an automobile is a so-called front hinge type in which a door hinge is provided at a front end portion (not shown) of the rear door 1. A door sash 3 that forms a window opening 1a between the main body 2 and the window 2 is opened and closed by a liftable door glass G1. A door weather strip 11 is attached to the outer peripheral edge of the rear door 1 including the door main body 2 and the door sash 3, and the door weather strip 11 is mainly composed of the vehicle body panel 4 and the vehicle body side door opening edge 5 and the door. The exterior and interior of the vehicle are sealed by pressure contact or elastic contact when closed.

  A rear side window glass G2 is disposed on the rear side of the door sash 3, and a part of the vehicle body side door opening edge 5 is configured with the garnish 6 attached to at least the front edge of the rear side window glass G2. . Further, outside moldings 7 and 8 are provided at positions on the extension line of the door waist portion W in the door waist portion W and the vehicle body panel 4 of the rear door 1, respectively. In addition, the door waist part W said here means the upper end edge of the door main body 2. FIG.

  As shown in FIG. 4 in addition to FIG. 2, the door sash 3 is an elongate one that is bent into a predetermined cross-sectional shape by so-called roll forming, and is not shown in the drawing, but is substantially arch-shaped in a side view. Presents. And the retainer part 3a which fits and hold | maintains the attachment base part 12 mentioned later among the door weather strips 11 is formed in the outer peripheral side of the door sash 3, and the glass run not shown for guiding raising / lowering of the door glass G1 is carried out. A channel portion 3 b for fitting and holding is formed on the inner peripheral side of the door sash 3.

  On the other hand, as shown in FIG. 5 in addition to FIG. 2, the door body 2 is configured by hemming the outer peripheral edge of the door outer panel 9 and the outer peripheral edge of the door inner panel 10. The lower end of the door sash 3 is inserted into an opening (not shown) between the upper end edge of the door outer panel 9 and the upper end edge of the door inner panel 10, and the door outer panel 9 A flange portion 2 a formed by superimposing the door inner panel 10 is formed at a position outside the vehicle compartment with respect to the vehicle compartment outer wall portion of the door sash 3.

  Further, a rear end edge of the door inner panel 10 is formed from a passenger compartment outer end surface 10a extending from the root portion of the flange portion 2a to the vehicle interior side, and from the vehicle interior side end edge of the vehicle interior outer end surface 10a. A stepped surface 10b that bends and extends to the front side of the vehicle body, and a vehicle interior side end surface 10c that extends from the edge of the stepped surface 10b to the vehicle interior side from the edge on the vehicle body front side are formed, respectively. Of the door inner panel 10, a mounting base 12, which will be described later, of the door weather strip 11 is fixed to the vehicle interior side end surface 10 c.

  As shown in FIGS. 1 and 3, the door weather strip 11 is extruded to have a uniform cross-sectional shape, and a sash-side general portion 11 a attached to the outer peripheral edge of the door sash 3, and a cross-section different from the sash-side general portion 11 a. The door main body side general portion 11b that is extruded into a shape and mounted on the outer peripheral edge of the door main body 2 is molded with a mold (not shown) so that the cross-sectional shape changes in the longitudinal direction, and both the general portions 11a and 11b are molded. And a mold forming part 11c for connecting the terminal parts on the vehicle rear side. In addition, although illustration is abbreviate | omitted, the terminal part of the vehicle front side of both general part 11a, 11b is mutually connected by the shaping | molding part different from the shaping | molding part 11c. The strip 11 has a closed loop shape along the outer peripheral edge of the rear door 1 including the door sash 3 and the door body 2.

  As shown in FIGS. 3 and 4, the sash side general portion 11 a includes a mounting base portion 12 fitted and held in the retainer portion 3 a of the door sash 3, a hollow main seal lip 13 protruding from the mounting base portion 12, and And a tongue-like sub-seal lip 14 protruding from the mounting base 12 at a position outside the vehicle compartment from the main seal lip 13. When the door is closed, the sub seal lip 14 is pressed or elastically contacted with the front end surface of the garnish 6 in the vehicle body side door opening edge 5, while the vehicle body panel 4 of the vehicle body side door opening edge 5 faces the outside of the passenger compartment. The main seal lip 13 is brought into pressure contact or elastic contact with the main seal lip contact surface 15 thus configured, so that the inside and outside of the vehicle interior are sealed with a so-called double seal structure.

  On the other hand, as shown in FIGS. 3 and 7, the door main body side general part 11 b protrudes from the mounting base 12 fixed to the vehicle interior side end surface 10 c of the door inner panel 10 with a clip (not shown), and the mounting base 12. On the other hand, the sash side general portion 11a is common to the sash side general portion 11a in that it includes a hollow main seal lip 13 that presses or elastically contacts the main seal lip contact surface 15 on the vehicle body panel 4 side when the door is closed. A sub seal lip 14 is not formed on the main body-side general portion 11b, and a tongue-shaped side lip 16 that protrudes from the mounting base 12 to the outside of the vehicle compartment and is constantly pressed or elastically contacted with the stepped surface 10b of the door inner panel 10 is provided. Is different from the sash side general part 11a.

  As shown in FIGS. 5 and 6 in addition to FIG. 3, the mold forming portion 11c has the same upper end as the sash side general portion 11a so as to connect the two general portions 11a and 11b having different cross-sectional shapes as described above. The lower end portion is formed in the same cross-sectional shape as the door main body side general portion 11b, and the middle portion in the longitudinal direction is formed so that the cross-sectional shape gradually changes in the longitudinal direction. In the rear edge of the rear door 1, the rear door 1 is mounted at a position straddling the top and bottom of the door waist portion W. Specifically, the portion of the mounting base 12 of the mold forming portion 11c that is above the door waist portion W is fitted and held in the retainer portion 3a on the door sash 3 side in the same manner as the sash side general portion 11a. On the other hand, the portion below the door waist portion W of the mounting base portion 12 of the mold forming portion 11c is fixed with a clip (not shown) to the vehicle interior side end surface 10c of the door inner panel 8 in the same manner as the door main body side general portion 11b. Has been. In addition, the code | symbols 17 and 18 of FIG. 3 have shown the junction part of both general part 11a, 11b and the shaping | molding part 11c.

  The sub seal lip 14 of the mold forming portion 11c extends from the upper end of the mold forming portion 11c to the vicinity of the lower end portion of the mold forming portion 11c while changing the cross-sectional shape. The lower portion is formed in a substantially straight shape that is inclined outwardly from the passenger compartment so that the inclination angle θ with respect to the outer surface of the vehicle body is 20 ° to 70 °.

  In addition, a substantially flat extension portion 19 extending from the base portion of the sub seal lip 14 toward the outside of the passenger compartment is formed at a position below the door waist portion W in the mold forming portion 11c. Yes. The extending portion 19 is fixed to the vehicle interior outer end surface 10a with a double-sided tape 20 while sitting on the vehicle interior outer end surface 10a of the door inner panel 10.

  Here, as shown in FIGS. 5 to 7, in addition to the main seal lip contact surface 15, the main seal lip contact surface is located at a position below the door waist portion W in the vehicle body side door opening edge 5. A sub-seal lip contact surface 21 that extends while bending outward from the rear end edge of the vehicle 15 and a stepped shape extending from the end edge of the sub-seal lip contact surface 21 toward the rear side of the vehicle body. Each of the surfaces 22 is formed so that the width dimension of the stepped surface 22 in the longitudinal direction of the vehicle body gradually increases downward.

  That is, for example, when high-pressure water at the time of car washing or the like enters from between the rear end edge of the door main body 2 and the vehicle body side door opening edge 5 from the outside of the passenger compartment, the water collides with the stepped surface 22 and the momentum. Is weakened to secure a seal inside and outside the vehicle interior, but in the vicinity of the door waist W, the stepped surface 22 is relatively narrow as described above. The effect of suppressing water intrusion by the stepped surface 22 is relatively small.

  Therefore, in the present embodiment, the sub seal lip 14 is extended to a portion below the door waist portion W of the mold forming portion 11c, thereby preventing the high pressure water from entering the vehicle interior. I have to. Specifically, the sub seal lip 14 of the mold forming portion 11c is a portion of the sub seal lip 14 above the door waist W when the door is closed, and the garnish 6 of the vehicle body side door opening edge 5 is. While being always pressed or elastically contacted with the front end edge of the mold, the portion below the door waist W of the sub seal lip 14 of the mold forming portion 11c has a predetermined distance from the sub seal lip contact surface 21 in a free state. It is set to face each other with a gap.

  In the seal structure configured as described above, the sub seal lip 14 may slide on the sub seal lip abutment surface 21 when the rear door 1 is opened and closed with the locus indicated by the symbol M in FIGS. Therefore, the rear door 1 can be opened and closed smoothly.

  On the other hand, for example, when high-pressure water at the time of car washing or the like enters from the outside of the passenger compartment between the rear edge of the door body 2 and the vehicle body-side door opening edge 5, the high-pressure water collides with the sub seal lip 14. The pressure of the high pressure water causes the sub seal lip 14 to swing toward the vehicle interior side as shown by the phantom line in FIG. . If the pressure of water that has entered between the rear end edge of the door body 2 and the vehicle body side door opening edge 5 is so low that the sub seal lip 14 does not swing, the sub seal lip 14 and the sub seal lip Although water enters the gap between the contact surface 21 and the water, the main seal lip 13 can sufficiently prevent the water from entering the vehicle interior side.

  That is, according to the present embodiment, the sub seal lip 14 is extended to a position below the door waist portion W of the door weather strip 11, and the door waist portion W of the sub seal lip 14 is extended. Since the lower part is always set apart from the vehicle body side door opening edge 5, the sub seal lip 14 abuts on the vehicle body side door opening edge 5 when the rear door 1 is opened and closed, and is required for opening and closing the door. The door opening / closing feeling can be improved without increasing the opening / closing operation force, and relatively high pressure water has entered between the rear end edge of the door body 2 and the vehicle body side door opening edge 5. Sometimes, the sub seal lip 14 comes into contact with the sub seal lip abutment surface 21 so that the inside and outside of the vehicle interior can be reliably sealed, and the sealing performance can be prevented from being lowered.

  In addition, since the extending portion 19 is fixed to the outer side end surface 10 a of the door inner panel 10 by the double-sided tape 20, the passenger compartment is interposed between the mold forming portion 11 c of the door weather strip 11 and the door inner panel 10. Intrusion of water into the inside can be prevented more reliably, and there is also an advantage that the sealing performance is improved.

  FIG. 8 is a view showing a second embodiment of the present invention, and is an enlarged view of a main part of the cross section corresponding to the line BB of FIG. 3 in the door weather strip. In FIG. 8, the same or corresponding parts as those in the first embodiment shown in FIGS.

  In the second embodiment shown in FIG. 8, the auxiliary lip 23 and the tip of the sub seal lip 14 are formed by forming an auxiliary lip 23 that protrudes from the intermediate portion in the protruding direction of the sub seal lip 14 toward the outside of the passenger compartment. A pressure receiving groove 24 having a substantially V-shaped cross section is formed between the first portion and the other portion, and the other portions are the same as in the first embodiment described above.

  Therefore, according to the second embodiment, when water enters from the outside of the passenger compartment between the rear end edge of the door body 2 and the vehicle body side door opening edge 5, as shown by an arrow E in FIG. Since the water is received by the pressure receiving groove 24, the above-described swinging of the sub seal lip 14 can be further ensured.

  FIG. 9 is a view showing a third embodiment of the present invention, and is an enlarged view of a main part of a cross section corresponding to the line BB of FIG. 3 in the door weather strip. In FIG. 9, the same or corresponding parts as those in the second embodiment shown in FIG.

  In the third embodiment shown in FIG. 9, the sub seal lip 25 is formed to be thicker than the sub seal lip 14 in the second embodiment described above, and at the root of the sub seal lip 25, The thin portion 25a is formed thinner than other portions of the sub seal lip 25, and the other portions are the same as in the second embodiment described above. In other words, the portion excluding the base portion of the sub seal lip 25 is formed thicker than the base portion of the sub seal lip 25.

  Therefore, according to the third embodiment, when the sub seal lip 25 is subjected to water pressure, the sub seal lip 25 swings to the vehicle interior side around the thin portion 25a, so that the swing is further ensured. It can be. Further, since the rigidity of the portion other than the thin portion 25a of the sub seal lip 25 is improved, when the sub seal lip 25 swings as described above, the tip side of the sub seal lip 25 is reversed so as to be directed toward the vehicle interior side. In addition to preventing the entry of water into the vehicle interior, the door opening / closing feeling can be improved more reliably.

1 ... Rear door (Automotive door)
DESCRIPTION OF SYMBOLS 5 ... Car body side door opening edge 11 ... Door weather strip 12 ... Mounting base 13 ... Main seal lip 14 ... Sub seal lip W ... Door waist part 23 ... Auxiliary lip 24 ... Pressure receiving groove 25 ... Sub seal lip 25a ... Thin part (root) Part)

Claims (5)

A hollow main seal lip that protrudes from at least a portion of the door weather strip mounted on the outer peripheral edge of the hinged automobile door on the opposite side of the door hinge from the mounting base of the door weather strip to the automobile door; A tongue-shaped sub-seal lip that protrudes while tilting from the position outside the vehicle compartment outside the main seal lip to the vehicle compartment outside of the mounting base is formed across the top and bottom of the door waist. When the door is closed, the main seal lip and the sub seal lip contact the vehicle body side door opening edge to seal the outside of the vehicle interior.
A portion of the sub seal lip above the door waist portion is formed so as to be always in elastic contact with the vehicle body side door opening edge when the door is closed, and below the door waist portion of the sub seal lip. When the door is closed, the part is separated from the vehicle body side door opening edge in a free state, while the pressure of water flowing from the outside of the vehicle compartment into the gap between the automobile door and the vehicle body side door opening edge moves toward the vehicle interior side. An automotive door seal structure, wherein the seal structure is formed so as to come into contact with a vehicle body side door opening edge by swinging.   2. The door door seal structure according to claim 1, wherein an inclination angle of the sub seal lip with respect to an outer surface of the vehicle body is set to 20 ° to 70 °.   The door weather strip includes an auxiliary lip that protrudes from the intermediate portion in the protruding direction of the sub seal lip toward the outside of the passenger compartment and forms a pressure receiving groove with the tip of the sub seal lip. The door door seal structure according to claim 1 or 2.   4. The automobile door seal structure according to claim 1, wherein a portion excluding the base portion of the sub seal lip is formed thicker than the base portion of the sub seal lip.   An extension part extending from the base part of the sub seal lip toward the vehicle compartment outside is formed at a position below the door waist part of the door weather strip, and the extension part is for automobiles. The door door seal structure according to any one of claims 1 to 4, wherein the door door seal structure is fixed to the door.

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