JP4280662B2 - Weather Strip - Google Patents

Description

  The present invention relates to a weather strip attached to a door in order to seal between an opening edge of a vehicle body and a peripheral edge of a door.

  The cross-sectional shape of the hinge-side corner portion of the weather strip that is the subject of the present invention will be described with reference to FIGS. FIG. 5A shows the vicinity of the hinge-side corner portion of the conventional weather strip 3 provided on the peripheral edge portion of the rear door 2 of FIG. 3, and FIGS. 5B to 5D show FIG. FIG. At the opening edge of the vehicle body, a convex step 7 and a convex step 9 are provided, and the weather strip 3 contacts and seals the convex step 7 and the convex step 9. On the hinge side of the vehicle body opening edge, as shown in FIG. 5 (b), the convex step portion 7 is composed of an indoor side wall 7a and an outdoor side wall 7b, and on the roof side of the vehicle body opening edge, as shown in FIG. 5 (d). The convex step portion 9 includes an indoor side wall 9a, an intermediate wall 9b, and an outdoor side wall 9c. The vehicle body opening edge on the hinge side and the vehicle body opening edge on the roof side side are formed continuously at the corner portion, and the indoor side wall 7a on the hinge side is divided into two parts, the indoor side wall 9a on the roof side side and the intermediate wall Similarly, the hinge-side outdoor wall 7b is connected to the outdoor wall 9c.

  Doors are attached to the left and right opening edges of the vehicle body, and weather strips for sealing are attached to the doors. The weather strip is a base portion that is a portion that is attached to the door, a hollow seal portion that is integrally formed with the base portion and elastically contacts the opening edge of the vehicle body, and a portion that elastically contacts the outside of the opening edge of the vehicle body. It consists of a seal lip part. And a hollow seal part is comprised by the indoor side seal part and the outdoor side seal part. The straight portion of the weatherstrip is an extruded product that is extruded, and the corner portion is formed by connecting the extruded products by molding to form a corner mold part.

  At the hinge side wall portion of the corner portion, as shown in FIG. 5B, the vicinity of the apex of the outdoor side seal portion 10 of the hollow seal portion 5 abuts on the indoor side wall 7a of the hinge-side convex step portion 7, and the roof At the side-side upper edge, as shown in FIG. 5 (d), the indoor-side seal portion 11 of the hollow seal portion 5 comes into contact with the intermediate wall 9 b of the convex step portion 9 on the roof side.

  As shown in FIG. 5 (c), the indoor side seal portion 11 of the hollow seal portion 5 is in contact with the intermediate wall 9 b of the convex step portion 9 on the roof side side at the approximate center of the corner portion. Here, from the substantially central portion of the corner portion to the hinge side wall portion, the portion of the hollow seal portion 5 that contacts the convex step portion 9 moves from the indoor side seal portion 11 to the outdoor side seal portion 10. ing.

  When the door 2 is closed and the weather strip is elastically contacted with the opening edge of the vehicle body, the corner portion of the weather strip having the above configuration starts to elastically contact with the opening edge of the vehicle body from the vicinity of the hinge side joint near the hinge. 6A and 6B is not influenced by the setting shown in FIGS. 5C and 5D, and is influenced by the bending shape in the vicinity of the hinge-side joint portion. ) To bend into the room as shown. Therefore, there is a defect that seal failure occurs from the substantially central portion of the corner portion to the upper edge portion on the roof side side, or wrinkles occur on the surface of the hollow seal portion 5 as shown in FIG.

  For this reason, as described in Patent Document 1, the thickness of the portion of the hollow seal portion that is elastically contacted with the opening edge of the vehicle body is made larger than that of the other portions, so that generation of wrinkles is suppressed. It is done to prevent leakage.

In addition, as described in Patent Document 2, there is one in which a raised portion is formed on the outer surface of the hollow seal portion of the weather strip in order to suppress the generation of wrinkles due to rolling-in.
Japanese Utility Model Publication No. 5-68720 ((0006), FIG. 8) Japanese Patent Laid-Open No. 9-164844 ((0013), FIG. 14)

  However, Patent Document 1 has a problem that a twisting force is applied to the corner molding portion on the hinge side in the hollow seal portion, and the hollow seal portion of the weather strip is rolled up, causing wrinkles and causing water leakage. Further, in Patent Document 2, when the surface pressure against the opening edge of the vehicle body becomes high and sand or the like adheres to the raised portion, the sand or the like is pressed against the opening edge of the vehicle body, causing peeling of the coating film.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a weather strip that solves the above-described problems and reduces the surface pressure applied to the opening edge of the vehicle body.

  According to a first aspect of the present invention, there is provided a base portion that is attached to a peripheral portion of a door that can be freely opened and closed via a hinge at an opening edge of a vehicle body; A weather strip that comprises a seal portion and is configured to be deformed by being elastically contacted with the opening edge when the door is closed, and sealing between the opening edge of the vehicle body and the peripheral edge portion of the door, Of the portion of the weather strip located at the hinge-side corner portion of the peripheral edge of the door, the portion from the substantially central portion to the upper edge portion of the corner portion, and the outdoor seal portion of the hollow seal portion On the inner surface, a recess that makes the hollow seal portion bend easily toward the outside of the passenger compartment is formed, and in the vicinity of the boundary between the base portion and the indoor seal portion of the hollow seal portion, Serial hollow seal portion is characterized in that the formation of the inhibiting thick portion of flexing toward the vehicle interior.

  In such a weather strip, since the concave portion is formed on the inner surface of the outdoor seal portion of the hollow seal portion, the hollow seal portion is easily bent outward from the portion where the concave portion is formed and the rigidity is lowered. . In addition, since a thick portion is formed on the inner surface near the boundary between the base portion and the indoor seal portion of the hollow seal portion and the rigidity is increased, deformation at this portion is suppressed, and as a result, the hollow seal portion is Bending toward the passenger compartment is suppressed, and it becomes easier to bend outside the passenger compartment. For this reason, it will bend from the part located in the approximate center of the corner part on the hinge side to the upper edge part, and all of it will be bent out of the passenger compartment. The

  The invention according to claim 2 is the weather strip according to claim 1, wherein the hollow strip is formed on the inner surface of the hollow seal portion at positions on both sides of the outdoor seal portion of the hollow seal portion sandwiching the recess. A convex part for increasing the rigidity of the seal part is formed.

  In such a weather strip, since the convex portions are formed at the positions on both sides of the concave portion in the outdoor seal portion of the hollow seal portion, the portions where the convex portions are formed have high rigidity, and the hollow seal is formed at the concave portion. The part is more easily bent toward the outside of the passenger compartment.

  The invention according to claim 3 is characterized in that, in the weather strip according to claim 1 or 2, the portion forming the recess or the like is an upper hinge side corner portion in the peripheral edge portion of the rear door.

  In such a weather strip, a portion of the weather strip hollow seal portion provided on the rear door from the substantially center of the upper hinge-side corner portion to the upper edge portion bends toward the outside of the passenger compartment. For this reason, generation | occurrence | production of the wrinkle in this part is lose | eliminated.

  According to the weather strip according to the present invention, since the recess is formed in the inner surface of the outdoor seal portion of the hollow seal portion, the hollow seal portion is directed to the outside of the vehicle compartment from the portion where the recess is formed and the rigidity is lowered. It becomes easy to bend. In addition, since the thick portion is formed near the boundary between the base portion and the indoor seal portion of the hollow seal portion and the rigidity is high, deformation at this portion is suppressed, and as a result, the hollow seal portion faces the outside of the passenger compartment. It becomes easier to bend. For this reason, the hollow seal part bends from the substantially middle part to the upper edge part of the hinge-side corner part toward the outside of the passenger compartment, and the deterioration of the sealing performance and the occurrence of wrinkles due to the hollow seal part are prevented. The Moreover, since the convex part is formed inside the outdoor seal part of the hollow seal part, the rigidity in the longitudinal direction of the hollow seal part is increased, and the occurrence of wrinkles in the vehicle front-rear direction is also eliminated.

  Embodiments of a weather strip according to the present invention will be described below.

  As shown in FIG. 3, for example, front doors 1 and rear doors 2 are provided on the front and rear opening edges of the right side surface of the vehicle body so as to be openable and closable, and weather strips 3 are attached to the peripheral portions of the respective doors. Yes. A weather strip 3 shown in FIG. 4 is mounted on the upper hinge side corner portion P of the rear door 2.

  FIG. 1A shows the vicinity of the hinge-side corner portion of the weather strip 3 of the present invention provided on the peripheral edge portion of the rear door 2, and FIG. 1B corresponds to the BB cross section of FIG. Fig. 1 (side edge), Fig. 1 (c) is a cross-sectional view equivalent to the CC cross section of Fig. 1 (a) (substantially the central portion of the corner portion), and Fig. 1 (d) is a DD cross section of Fig. 1 (a) It is an equivalent figure (upper edge part), and all have shown the cross-sectional shape which is a cross-sectional shape when the weather strip 3 is cut | disconnected by the plane substantially orthogonal to the length direction. In FIGS. 1B, 1C, and 1D, reference numeral 12 denotes a side panel that forms the opening edge of the vehicle body, and 8 denotes a door panel that forms the peripheral edge of the rear door 2. A weather strip 3 is attached to the door panel 8. 1B, 1C, and 1D, the lower side is the vehicle interior, and the upper side is the vehicle exterior. The weather strip 3 includes a base portion 4 that is directly attached to the door panel 8, a hollow seal portion 5 that is formed integrally with the base portion 4 and elastically contacts the convex steps of the side panel 12 of the vehicle body, and the side panel of the vehicle body. The seal lip portion 6, which is a portion that is elastically contacted with the seal 12, is integrally formed. The hollow seal portion 5 includes an outdoor side seal portion 10 and an indoor side seal portion 11.

  The weather strip of the present invention is configured to be in the following state when the rear door 2 is closed. As shown in FIG. 1B, at the hinge side edge, the vicinity of the apex of the outdoor seal portion 10 of the hollow seal portion 5 abuts on the indoor side wall 7a of the convex step portion 7, and bends indoors. As shown in FIG. 1D, the indoor side seal portion 11 of the hollow seal portion 5 is in contact with the intermediate wall 9 b of the convex step portion 9 at the upper edge portion on the roof side side. As shown in FIG. 1C, the indoor side seal portion 11 of the hollow seal portion 5 is also in contact with the intermediate wall 9 b of the convex step portion 9 in the substantially central portion of the corner portion.

  That is, the weather strip is configured as follows so as to cause the above-described bending. As shown in FIGS. 1C and 1D by a two-dot chain line, a concave portion 10a for facilitating the bending of the hollow seal portion 5 toward the outside of the vehicle compartment is formed on the inner surface of the outdoor seal portion 10. Has been. This is because the concave portion 10a is bent with the concave portion 10a inside because the portion where the concave portion 10a is formed is low in rigidity, and the hollow seal portion 5 is bent toward the outside of the passenger compartment at the concave portion 10a.

  Further, the hollow seal portion 5 is bent toward the vehicle interior on the inner surface of the indoor seal portion 11 in the vicinity of the boundary between the base portion 4 of the weather strip 3 and the indoor seal portion 11 of the hollow seal portion 5. A thick portion 11a for suppressing the above is formed. The thick portion 11 a is provided for the purpose of increasing the rigidity so that the hollow seal portion 5 is not easily bent with respect to the base portion 4. The thick portion 11a is formed at a position where the surface pressure of the hollow seal portion 5 does not extremely increase. This is because if the surface pressure is extremely increased, a large force is applied from the hollow seal portion 5 to the opening edge of the vehicle body, and the coating film may be peeled off.

  In addition, as shown in FIGS. 1 (c) and 1 (d), the hollow seal portion is located on the inner surface of the outdoor seal portion 10 and at a position sandwiching the concave portion 10 a in the circumferential direction in the cross section of the hollow seal portion 5. The convex part 10b for making the rigidity of 5 the longitudinal direction high and preventing generation | occurrence | production of a wrinkle is formed.

  In the weatherstrip 3 configured in this way, a wall is formed in the vicinity of the boundary between the base portion 4 and the indoor side seal portion 11 from the upper edge portion of FIG. 1D to the substantially central portion of the corner portion of FIG. Since the thick part 11a is formed and the rigidity is high, deformation at this part is suppressed, and the hollow seal part 5 is suppressed from being bent toward the vehicle interior. On the other hand, since the recessed part 10a was formed in the inner surface of the outdoor side seal part 10, the hollow seal part 5 becomes easy to bend toward the exterior of a vehicle room from the part where the recessed part 10a was formed and the rigidity became low. Furthermore, since the convex portions 10b are formed on the inner surfaces of the outdoor side seal portions 10 at the positions sandwiching the concave portions 10a, the rigidity of the portions where the convex portions 10b are formed is high, and the rigidity of the hollow seal portion 5 in the longitudinal direction is high. For this reason, as shown in FIGS. 1 (c) and 1 (d), the hollow seal portion 5 does not bend toward the vehicle interior, but starts from a portion where the recess 10 a is formed and the rigidity is lowered. It will bend toward the outside of the passenger compartment. In addition, as shown in FIG.1 (b), since the shape of the hollow seal part 5 in the side edge part near a hinge is the same as the past, the direction of bending is also the same and it will bend toward the vehicle interior. .

  FIG. 2 shows the bending direction of each portion of the weather strip hinge-side corner portion in correspondence with FIG. 7 in the conventional case. As described above, in the vicinity of the joint portion on the roof side side and in the substantially central portion of the corner portion, unlike the conventional case, the hollow seal portion 5 of the weather strip 3 does not go in and bends only toward the outside of the passenger compartment. For this reason, the roof side side from the center of the corner portion of the weather strip 3 is all bent toward the outside (upward) of the passenger compartment, and no rolling-in occurs. As described above, since the hollow seal portion 5 of the weather strip 3 is not caught, the sealing performance is improved, and wrinkles are not generated as in the prior art. Further, the weather strip 3 does not buckle as in the prior art, and the problem that wrinkles are generated thereby is also eliminated.

  In this embodiment, the hollow seal portion of the weather strip is formed with a recess or the like from the substantially central portion to the upper edge portion of the hinge-side corner portion of the upper portion of the rear door. You may form a recessed part etc. from the approximate center part of a part to an upper edge part.

1 is a conceptual diagram showing a weather strip of a rear door, (b) is a cross-sectional view corresponding to BB of (a), and (c) is a cross-sectional view corresponding to CC of (a). , (D) is a DD cross-sectional view of (a) (embodiment). The perspective view (embodiment) which concerns on the weather strip by this invention and shows the bending direction of each part of the corner part in the weather strip of a rear door. The front view which shows the door on the right side of a motor vehicle (embodiment). The perspective view which shows the corner part of the weather strip in the rear door of the right side of a motor vehicle (embodiment). (A) is a conceptual diagram showing a weather strip of a rear door, (b) is a cross-sectional view corresponding to BB in (a), (c) is a cross-sectional view corresponding to CC in (a), (D) is a DD cross-section equivalent figure of (a). The deformation | transformation state which actually occurs with the conventional weather strip is shown, (a) is a BB cross-section equivalent figure of Fig.5 (a), (b) is a CC cross-section equivalent figure of Fig.5 (a). The perspective view which shows the state of the wrinkles of the corner part produced in the weather strip of the conventional rear door.

Explanation of symbols

DESCRIPTION OF SYMBOLS 4 ... Base part 5 ... Hollow seal part 5a ... Concave part 5b ... Thick part 5c ... Convex part 7 ... Side panel (opening edge)
8 ... Door panel (periphery)

Claims (3)

The door comprises a base portion attached to a peripheral edge portion of a door that can be opened and closed via a hinge at an opening edge of the vehicle body, and is formed integrally with the base portion and includes an indoor side seal portion and an outdoor side seal portion. In the weather strip that is configured by a hollow seal portion that is elastically contacted with the opening edge when deformed and seals between the opening edge of the vehicle body and the peripheral edge portion of the door,
Of the portion of the weather strip that is located at the hinge-side corner portion of the peripheral edge of the door, the portion from the substantially central portion to the upper edge portion of the corner portion,
A recess is formed on the inner surface of the outdoor seal portion of the hollow seal portion so that the hollow seal portion is easily bent toward the outside of the vehicle compartment, and a boundary between the base portion and the indoor seal portion of the hollow seal portion. A weather strip, characterized in that a thick portion that suppresses the hollow seal portion from bending toward the vehicle interior is formed in the vicinity. 2. The weather strip according to claim 1, wherein the rigidity of the hollow seal portion is increased on the inner surface of the hollow seal portion at positions on both sides of the hollow seal portion on both sides of the concave portion. A weatherstrip formed by forming a convex portion. 3. The weather strip according to claim 1, wherein a portion forming the concave portion or the like is an upper hinge side corner portion at a peripheral edge portion of the rear door.

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