JP3674816B2 - Weather strip - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a weather strip for sealing a gap between a door and a body panel of an automobile, particularly a passenger car, and more particularly to a structure of a weather strip attached to a flange portion around a door opening of the body panel.
[0002]
[Prior art]
As shown in FIG. 4, a synthetic rubber is provided between the front door FD, the rear door RD, and the front pillar FP, the center pillar CP, the rear pillar RP, the center pillar CP, and the like that form a part of the body. The entire weather strip WS made of a molded material is mounted.
The entire weather strip WS is composed of a member that can be viewed from the outside of the vehicle when the door is closed and a member that is disposed on the inside of the vehicle and cannot be viewed. As is apparent from FIG. 6 cut along, the hollow seal portion 21 that protrudes from the base portion 22 fixed to the door sash DS toward the body panel BP, and the outer side of the hollow seal portion 21 on the outside of the vehicle. A door-weather strip 20 comprising a base seal 24 fixed to the door sash DS and a sub-seal portion 23 projecting toward the body panel BP, and a door opening of the body panel BP on the inner side of the door-weather strip 20 The door opening weather strip 10 was mounted on the peripheral flange F.
[0003]
In particular, a conventional door opening weatherstrip 10 (hereinafter simply referred to as a weatherstrip 10) has a substantially U-shaped cross section through a shape-retaining core 13 as shown in FIGS. The trim portion 11 fixed to the door opening peripheral flange portion F, and the hollow seal portion 15 projecting from the side surface of the trim portion 11 toward the vehicle interior peripheral area DSa of the door sash DS.
In particular, the hollow seal portion 15 is composed of a peripheral wall portion having a bent outer peripheral wall surface 14 having a perimeter necessary for sealing by crimping to the vehicle inner peripheral region DSa of the door sash DS, and thus has a relatively small outer diameter. It was molded with a cylindrical cross section having Further, the peripheral wall portion having the bent outer peripheral wall surface 14 has a notch 16 appropriately engraved on the inner peripheral wall surface thereof to adjust the elasticity of the entire peripheral wall portion.
[0004]
[Problems to be solved by the invention]
However, in the conventional weather strip 10 described above, the thickness of the peripheral wall portion of the hollow seal portion 15 is set to be thin, for example, about 0.5 mm, in order to obtain a good sealing property due to the crimp deformation. The sound insulation against the noise transmitted through the door / weather strip 20 must be sacrificed considerably.
Further, there are many contour lines of each member on the vehicle exterior side surfaces of the weather strip 10 as viewed from the vehicle exterior side when the door is opened, as indicated by alternate long and short dashed arrows L ₁ , L ₂ , L ₃ and L ₄ in FIG. Therefore, there was a defect that the appearance was impaired.
[0005]
An object of the present invention is to provide a weather strip that solves the above-described problems of the prior art and provides excellent sound insulation while maintaining good door sealing performance.
[0006]
[Means for Solving the Problems]
An object of the present invention is a weather strip that is mounted on a flange portion around a door opening of a body panel in order to seal a gap between an automobile door and a body panel, and the weather strip has a substantially U-shaped cross section. A trim portion that is molded in a letter shape and fixed to the peripheral flange portion of the door opening, a post portion that protrudes from the side surface of the trim portion with a substantially Y-shaped cross-sectional shape, and one of the post portions An outer peripheral wall surface for sealing that bends from the protruding end portion toward the vehicle inner peripheral area of the door sash, and an outer peripheral wall surface for sound insulation that extends substantially linearly from the outer peripheral wall surface for sealing to the upper outer end portion of the trim portion. The sound-insulating outer peripheral wall surface has a thicker peripheral wall portion than the sealing outer peripheral wall surface, and the sealing outer peripheral wall surface and the sound insulating outer peripheral wall surface Joint circumference Parts is achieved by weatherstripping, characterized in that positioned on the vehicle outer side upper end side of the said trim portion away from the vehicle interior perimeter of said door sash.
[0007]
Further, the object of the present invention is to define two hollow portions by bridging the joint peripheral wall portion between the sealing outer peripheral wall surface and the sound insulating outer peripheral wall surface to the other protruding end portion of the support column portion. Achieved by a weatherstrip that is characterized by
[0008]
Furthermore, above and other objects of the present invention, weather of the joint wall portion, characterized in that cross-linking to the other projecting end of the said strut drives out angle of 90 ° or less with respect to sealing the outer peripheral wall surface Accomplished by strip.
[0009]
[Action]
The weather strip of the present invention has a trim section that has a substantially U-shaped cross section and is fixed to the door opening peripheral flange section, and a substantially Y-shaped cross section from the side of the trim section. And the outer peripheral wall surface for sealing that bends from one protruding end portion of the post portion toward the vehicle inner peripheral region and the outer peripheral wall surface of the trim portion following the outer peripheral wall surface for sealing. The sound-insulating outer peripheral wall surface extending substantially linearly to the upper end portion is provided with the hollow portion integrally formed, so that the sealing outer peripheral wall surface of the hollow portion maintains a good door sealing property. On the other hand, the sound insulation outer peripheral wall provides excellent sound insulation at a position away from the vehicle inner peripheral area, and further, the weather strip outer periphery wall is integrated with the sealing outer peripheral wall and the sound insulation outer peripheral wall. Each part The contour line of decreases.
[0010]
Furthermore, the weather strip of the present invention has a peripheral wall portion whose outer wall surface for sound insulation is thicker than the outer peripheral wall surface for sealing, so that the door sealing property and the sound insulating property are more reliably maintained and imparted .
[0011]
Furthermore, the weather strip of the present invention defines two hollow portions by bridging the joining peripheral wall portion between the sealing outer peripheral wall surface and the sound insulating outer peripheral wall surface to the other protruding end portion of the support column portion. Therefore , sound insulation is further improved by bridging the support column and the joint peripheral wall portion, and excessive protrusion of the sealing outer peripheral wall surface from the vehicle inner peripheral region due to crimp deformation of the hollow portion when the door is closed. Be blocked.
[0012]
Furthermore, the weather strip of the present invention is such that the joint peripheral wall portion between the sealing outer peripheral wall surface and the sound insulating outer peripheral wall surface is away from the vehicle inner peripheral region of the door sash and closer to the vehicle outer upper end portion. Therefore, the door closing force is prevented from increasing due to interference of the thick walled sound insulation outer peripheral wall surface with the door sash to the vehicle interior peripheral area .
[0013]
Furthermore, in the weather strip of the present invention, the joint peripheral wall portion bridges the other protruding end portion of the support column portion at an angle of 90 ° or less with respect to the sealing outer peripheral wall surface. Excessive protrusion of the sealing outer peripheral wall surface from the vehicle inner peripheral area due to the crimp deformation of the hollow portion is more reliably prevented .
[0014]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of a weather strip according to the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a cross-sectional view showing the entire weather strip WS of the present invention under a closed door state cut along the line AA of FIG. 5 in the same manner as a conventional weather strip, and FIG. 2 is a door of the present invention. FIG. 3 is an enlarged cross-sectional view of an open weather strip 30, and FIG. 3 is a cross-sectional view showing another embodiment of the weather strip of the present invention .
[0015]
As shown in FIGS. 1 and 2, the entire weather strip WS of the present invention is disposed on the inside of the vehicle and a member that can be seen from the outside of the vehicle when the door is closed, like the conventional weather strip overall WS described above. Consists of invisible members. The entire weather strip WS of the present invention is configured as shown in FIG. 1 cut along the line AA in FIG .
[0016]
That is, a hollow seal portion 21 projecting from the base portion 22 fixed to the door sash DS toward the body panel BP, and a base portion 24 fixed to the door sash DS outside the hollow seal portion 21 from the base portion 24 to the body panel. A door / weather strip 50 including a sub-seal portion 23 projecting toward the BP, and a door opening weather strip 30 mounted on the door opening peripheral flange portion F of the body panel BP on the inner side of the door / weather strip 20. Consists of .
[0017]
In particular, the door opening weatherstrip 30 (hereinafter simply referred to as the weatherstrip 30) of the present invention has a substantially U-shaped cross section through a shape retaining core 33 as shown in FIGS. A trim part 31 that is molded and fixed to the door opening peripheral flange part F via a plurality of pairs of lip parts 32, and a substantially Y-shape from the side surface of the trim part 31 toward the vehicle interior peripheral area DSa of the door sash DS A column portion 34 protruding with a cross-sectional shape is formed from a synthetic solid rubber material, for example, an ethylene propylene rubber material, and 35 is a groove portion into which a garnish (not shown) is inserted.
[0018]
In addition, a sealing outer peripheral wall surface 36 that bends from one projecting end portion of the support column 34 toward the vehicle interior peripheral area DSa of the door sash DS, and a vehicle outer side of the trim portion 31 following the sealing outer peripheral wall surface 36. A sound insulation outer peripheral wall surface 37 extending substantially linearly to the upper end portion 31 a is integrally formed, and a joint peripheral wall portion between the sealing outer peripheral wall surface 36 and the sound insulation outer peripheral wall surface 37 is formed as the other end of the column portion 34. The two hollow portions 39 and 40 formed by cross-linking the protruding end portions are formed from a synthetic sponge rubber material, for example, an ethylene propylene rubber material .
[0019]
Further, the sound insulation outer peripheral wall surface 37 has a thicker peripheral wall portion than the sealing outer peripheral wall surface 36. For example, the sound insulation outer peripheral wall surface 37 is about 1.0 mm, and the sealing outer peripheral wall surface 36 is about 0.5 mm. Set to the thickness of. Note that a notch portion 38 having a depth of about 0.3 mm and a width of about 1.0 mm, for example, is formed on the inner peripheral wall surface of the sealing outer peripheral wall surface 36 as needed, and the elasticity of the hollow portion 39 is obtained. Adjust .
[0020]
The relatively thin-walled outer peripheral wall surface 36 for sealing of the hollow portion 39 maintains a good door sealing property, while the relatively thick-walled outer peripheral wall surface 37 for sound insulation of the hollow portion 40 provides sound insulation, The sound insulation is further improved by bridging the support column portion 34 and the joint peripheral wall portion, and excessive protrusion of the sealing outer peripheral wall surface 36 from the vehicle inner peripheral area DSa due to the crimp deformation of the hollow portion 39 when the door is closed. Is blocked. Further, by integrating the sealing outer peripheral wall surface 36 and the sound insulating outer peripheral wall surface 37, the contour lines L ₁ , L ₃ , and L ₄ of the respective members on the outer surface of the weather strip 10 are reduced.
[0021]
Further, according to the weather strip 10 of the present invention, the joint peripheral wall portion between the sealing outer peripheral wall surface 36 and the sound insulating outer peripheral wall surface 37 is separated from the vehicle inner peripheral region DSa of the door sash DS. By disposing near the vehicle upper end 31a, the door closing force is prevented from increasing due to the interference of the door sash DS of the thick sound-insulating outer peripheral wall surface 37 with the vehicle inner peripheral area DSa.
[0022]
Further, the joint peripheral wall portion is bridged to the other protruding end portion of the column portion 34 at an angle θ of 90 ° or less with respect to the sealing outer peripheral wall surface 36, so that the vehicle interior side of the sound insulating outer peripheral wall surface 37 is formed. Interference with the surrounding area DSa is further avoided, and an increase in the door closing force is suppressed.
[0023]
In another embodiment of the weatherstrip 10 of the present invention shown in FIG. 3, the strut portion 34a is not bridged with the joining peripheral wall portion between the sealing outer peripheral wall surface 36a and the sound insulating outer peripheral wall surface 37a, and one protruding end portion thereof. A relatively thin wall is joined to one end of the sealing outer peripheral wall surface 36 a, and the other end of the relatively thick sound-insulating outer wall surface 37 a is joined to the upper outer end portion 31 a of the trim portion 31. The hollow portion 41 is changed to be formed.
[0024]
In this embodiment, the bridging portion between the other protruding end portion of the support column 34 and the joint peripheral wall portion is omitted, but the peripheral wall portion 37a for sound insulation is thicker than the outer peripheral wall surface 36a for sealing. For example, the outer peripheral wall surface 37a for sound insulation is set to a thickness of about 1.0 mm, and the outer peripheral wall surface 36a for sealing is set to a thickness of about 0.5 mm. Excessive protrusion of the sealing outer peripheral wall surface 36a from the vehicle inner peripheral area DSa is prevented.
[0025]
If the sound insulating outer peripheral wall surface 37a is set to a peripheral wall portion having the same thickness as the sealing outer peripheral wall surface 36a, the degree of adhesion to the vehicle inner peripheral region DSa is reduced as shown by the broken line in FIG. Since excessive protrusion from the inner peripheral area DSa occurs, it is not preferable.
[0026]
【The invention's effect】
The weather strip of the present invention described above has the following new effects. That is, the weather strip of the present invention has a trim section that has a substantially U-shaped cross section and is fixed to the door opening peripheral flange section, and a side surface of the trim section from the side surface of the trim section to the vehicle inner peripheral area. The projecting portion projecting toward the vehicle, the outer peripheral wall surface for sealing bent from the projecting end of the support column toward the vehicle inner peripheral region, and the vehicle of the trim unit following the outer peripheral wall surface for sealing. The sound-insulating outer peripheral wall surface that extends substantially linearly to the outer upper end portion is formed integrally with the hollow portion, so that the sealing outer peripheral wall surface of the hollow portion maintains a good door sealing property. The sound insulation outer peripheral wall provides excellent sound insulation at a position away from the vehicle inner peripheral area, and further, the weather strip outer side wall is integrated by integrating the sealing outer peripheral wall surface and the sound insulating outer peripheral wall surface. In many ways Kicking reduced contour lines of each member becomes possible to maintain a favorable appearance.
[0027]
Furthermore, the weather strip according to the present invention has a peripheral wall portion whose outer wall surface for sound insulation is thicker than the outer peripheral wall surface for sealing, so that it is possible to more reliably maintain and impart door sealability and sound insulation properties. became.
[0028]
Further, in the weather strip of the present invention, the supporting column part protrudes from the side surface of the trim part with a substantially Y-shaped cross-sectional shape, while the joining peripheral wall part between the sealing outer peripheral wall face and the sound insulating outer peripheral wall face is Since the two hollow portions are defined by bridging the other protruding end portion of the support column, sound insulation is further improved by bridging the support column and the joint peripheral wall, and the door is closed when the door is closed. It has become possible to prevent excessive protrusion of the sealing outer peripheral wall surface from the vehicle inner peripheral area due to the crimp deformation of the hollow portion.
[0029]
Furthermore, the weather strip of the present invention is such that the joint peripheral wall portion of the sealing outer peripheral wall surface and the sound insulating outer peripheral wall surface is away from the vehicle inner peripheral region of the door sash and closer to the vehicle outer upper end portion. Therefore, it is possible to avoid an increase in the door closing force due to the interference of the thick-walled sound-insulating outer peripheral wall surface with the door inner sash.
[0030]
Further, in the weather strip of the present invention, the joining peripheral wall portion bridges the other protruding end portion of the support column portion at an angle of 90 ° or less with respect to the sealing outer peripheral wall surface, so that the hollow portion when the door is closed It has become possible to more reliably prevent excessive protrusion of the sealing outer peripheral wall surface from the vehicle inner peripheral area due to the crimping deformation of.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing an entire weather strip of the present invention under a door closed state cut along line AA in FIG. 4;
FIG. 2 is an enlarged cross-sectional view of a weatherstrip of the present invention.
FIG. 3 is a cross-sectional view showing another embodiment of the weatherstrip of the present invention.
FIG. 4 is an explanatory view of the entire weather strip mounted around each door of a passenger car.
FIG. 5 is an enlarged cross-sectional view of a conventional weather strip.
6 is a cross-sectional view showing an entire conventional weather strip taken along the line AA in FIG. 4 and in a closed door state.
[Explanation of symbols]
WS Weather strip overall FD Front door RD Rear door FP Front pillar CP Center pillar RP Rear pillar BP Body panel F Flange part DS Door sash DSa Door sash interior area L ₁ Contour line L ₂ Contour line L ₃ Contour line L ₄ Contour line 10 Conventional Weather strip 11 Trim portion 11a The other upper end portion 12 of the trim portion 13 Lip portion 13 Shape retaining core 14 Bent outer peripheral wall 15 Hollow seal portion 16 Notch portion 20 Door / weather strip 21 Hollow seal portion 22 Base portion 23 Sub seal portion 24 Base portion 30 The weather strip 31 of the present invention The trim part 31a The other upper end part 32 of the trim part 32 The lip part 33 The core metal for shape retention 34 The column part 34a The column part 35 The groove part 36 The outer peripheral wall surface 36a for sealing The outer peripheral wall surface 37 for sound insulation Outer peripheral wall 38 for notch 9 hollow 40 hollow portion 41 hollow portion θ angle

Claims (3)

A weather strip (30) mounted on a door opening peripheral flange portion (F) of the body panel (BP) to seal a gap between the door (FD, RD) of the automobile and the body panel (BP), The weather strip (30) has a substantially U-shaped cross section and is fixed to the peripheral flange portion (F) of the door opening, and a substantially Y from the side of the trim portion (31). A column portion (34, 34a) protruding with a letter-shaped cross-sectional shape, and one protruding end portion of the column portion (34, 34a) to the vehicle interior peripheral area (DSa) of the door sash (DS) The outer peripheral wall surface for sealing (36, 36a) that bends toward and the outer peripheral wall surface (36, 36a) for sealing, and then the sound insulation that extends substantially linearly to the upper outer end portion (31a) of the trim portion (31). Outer peripheral wall (37, 37 ) Integrally formed hollow portions (39, 40, 41), and the outer peripheral wall surface for sound insulation (37, 37a) is thicker than the outer peripheral wall surface for sealing (36, 36a). A peripheral wall portion having a peripheral wall portion, and a joint peripheral wall portion between the outer peripheral wall surface for sealing (36, 36a) and the outer peripheral wall surface for sound insulation (37, 37a) is an inner peripheral region (DSa) of the door sash (DS). A weatherstrip that is located away from the trim and close to the upper end (31a) of the trim part (31).   The joint peripheral wall portion between the sealing outer peripheral wall surface (36) and the sound insulating outer peripheral wall surface (37) is bridged to the other projecting end portion of the support column portion (34), whereby two hollow portions (39, 40. The weatherstrip according to claim 1, wherein 40) is defined. Wherein said joining peripheral wall portion, characterized in that the cross-linking to the other projecting end of the strut drives out 90 ° or less an angle (theta) with respect to sealing the outer peripheral wall surface (36) (34) Item 3. The weather strip according to Item 2.

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