JP4525217B2 - Weather strip and its mounting structure - Google Patents

Description

  The present invention relates to a weather strip and a mounting structure thereof, and more particularly to a weather strip mounted on a sunroof of an automobile and a mounting structure thereof.

  As a structure for attaching a weather strip attached to the peripheral edge Sa of the sunroof S of the automobile M shown in FIG. 1, for example, a structure as shown in FIG. 5 is known. In other words, the weather strip 4 is arranged between the stay (support portion) 2 formed on the sunroof peripheral edge Sa of the automobile body 1 and the peripheral edge of the sunroof lid 3 constituting the sunroof S.

The stay 2 is provided with a weather strip mounting portion 2 a that is parallel to the sun roof lid 3 and fits and mounts the weather strip 4. The weather strip mounting portion 2 a is formed so as to be located outside the end portion of the sun roof lid 3. Has been. The weather strip 4 is fitted to the weather strip mounting portion 2a of the stay 2 by the solid rubber base portion 4b, and at the same time, the one side covers the sun roof lid 3 with the cover portion 4a covering the upper surface of the sun roof lid 3 and sandwiching it. A hollow seal portion 4c is provided on the other side so as to bulge outward from the sunroof lid 3, and is configured to elastically contact the opening end portion of the automobile body 1 to ensure sealing performance ( For example, see Patent Document 1).
JP 2002-219947 A

  However, in recent years, due to a strong demand for weight reduction of vehicles, the use of a lighter transparent resin sunroof lid instead of the glass sunroof lid is being considered instead of the sunroof lid, but the transparent sunroof lid is compared with the glass sunroof lid. The dimensional change amount with respect to the temperature change is large, and the maximum dimensional change amount due to the temperature change in the four seasons is about 3 mm for the glass sunroof lid, and about 6 mm for the transparent sunroof lid. Therefore, it is necessary to lengthen the clamping margin (width of the cover portion 4f) a of the sunroof lid 3 shown in FIG. 5 to about 6 mm, and the distance b from the fitting portion to the stay 2 requires about 9 to 10 mm. . In this way, if the clamping allowance a is lengthened, the corrugated unevenness is unavoidably generated in the cover portion 4f at the corners even if it is subjected to squeeze forming (which means that shape holding processing is performed while heating), and the appearance is impaired. At the same time, there was a problem that the sealing performance deteriorated, and there was a strong demand for improvement.

  In addition, a pool of water may be formed between the sunroof lid 3, the weather strip 4, and the body 1 due to rain or the like, and water may stay in the seal portion between the sunroof lid 3 and the weather strip 4 due to capillary action. It may invade the 2 side. Conventionally, since there is no drainage channel on the stay side, a water pool is generated up to the stay 2 side. As a result, the adhesive may be peeled off by hydrolysis, and water corrosion and the generation of odor due to this may occur. Furthermore, a gap may be generated between the sunroof lid 3 and the weather strip 4 due to long-term use, and the sealing performance may deteriorate. As a result, as described above, the rain that has entered may stay in the space 6 and cause a fall into the room, and it is difficult to detect the gap, so that partial repair is difficult. The replacement is complicated and has a problem in terms of cost.

  Accordingly, the present invention provides a weather strip that can efficiently process moisture mixed in the vehicle by a simple method, and that does not easily cause unevenness at the corner, and its mounting structure. The purpose is to provide.

  As a result of intensive studies, the present inventors have found that the above object can be achieved by the weather strip and its mounting structure described below, and have completed the present invention.

The present invention provides a weather strip that is attached to a stay joined to the indoor surface side of a sunroof lid and seals by elastic contact with a body when the sunroof is closed, and at least a part of a solid rubber base that is fitted and fixed to the stay has one or more through holes, with the through hole can be fixed with a predetermined inclination angle with respect to the perpendicular, wherein the weather strip, and the solid rubber base, the central portion side of the sunroof lid A lip seal portion that is erected so as to be positioned at the end of the sunroof lid so that at least a tip portion thereof is inclined toward the end portion direction of the sunroof lid and elastically contacts the indoor side surface of the sunroof lid; A hollow seal portion formed so as to be located on the side of the body and elastically contacting the opening end of the body when the sunroof is closed, and the through hole Provided on the stay side lower surface, and characterized by having a stay and the dimensionally elastic-contact with the water diverter valve unit, and at least one or more of the cored hole in one of said solid rubber base or hollow seal portion .

The present inventor has one of the most obstacles to the treatment of rainwater mixed in from the outside when the weatherstrip is mounted. The stay to which the weatherstrip is attached is attached to the weatherstrip. It has been found that a puddle may be created, and smooth drainage can be easily performed by providing a through hole having a predetermined slope in the solid rubber base forming the weather strip. That is, with this configuration, it has become possible to efficiently treat moisture mixed in the vehicle by a simple method. Moreover, according to this structure, the drainage function by said through hole and core core hole is complemented, and the water | moisture content permeated into the stay side can be guide | induced to a through hole exactly, and more reliable drainage processing can be performed. At the same time, it is possible to construct a weather strip which is another problem of the present invention and in which unevenness at the corners hardly occurs. In other words, since the lip seal part is elastically contacted and sealed from the bottom surface of the sunroof lid fitted into the sunroof, the slidable seal between them is merely slid at the elastic contact position even when the sunroof lid temperature changes. Therefore, it is not necessary to increase the width of the weatherstrip, so that the unevenness that occurs when bending along the corners of the sunroof is reduced, and there is no need to perform squeeze molding. Moreover, since the lip seal part is in contact with the indoor surface of the sunroof lid, at least the tip part is inclined and elastically contacted toward the end part of the sunroof lid, so that the jet of high pressure water used for washing such as a car wash is used. Therefore, the pressure of the water to be invaded generates a force for pressing the lip seal against the sunroof lid, and it is convenient to reliably prevent the high pressure water from entering the sunroof.

  Further, the present invention is the above-mentioned weather strip, characterized in that a part of the solid rubber base has a mold forming part fitted to the stay, and the through hole is provided in the mold forming part. To do.

  The weather strip requires a part of the molded part in order to ensure its function, such as circular formation or secure fixing, but the molded part should be formed with a shape or hardness different from other parts. Is possible. By providing the through hole, which is a constituent feature of the present invention, in the molded part, it is possible to ensure a predetermined angle and strength of the through hole without affecting other parts. Further, by limiting the mounting position on such a stay, it is possible to fix the through hole at an optimal position where the drainage function is exhibited.

The present invention relates to a mounting structure of a weather strip attached to one of the weather strip to the sunroof lid, it said weatherstrip is mounted by fitting the solid rubber base to stay, cut a part of the stay A notch portion is provided, and a molded portion is fitted into the notch portion, and the hollow seal portion bulges outward from the end portion of the sunroof lid, and when the sunroof is closed, the hollow seal portion becomes the open end of the body. parts in elastic contact, the molded part, in the mounted state is located in the most lower of the weather strip, said coring holes, provided in the downward direction of the solid rubber base or hollow seal portion, the through-hole lower and core A water receiver is arranged below the punch hole.

  According to this configuration, the through hole, the core hole, and the water receiver are efficiently linked to each other, and a weather strip having a reliable drainage function can be formed. In particular, the mounting position of the entire weather strip can be determined based on the mounting position of the molded part, and smooth drainage treatment is possible. Moreover, even when using a sunroof lid for the sunroof, it is possible not only to provide a weatherstrip mounting structure that is less prone to unevenness at the corners, but also when cleaning. It is possible to prevent high pressure water from entering the sunroof even when high pressure water is used.

  As described above, according to the present invention, it is attached in a state that can sufficiently perform each function required for the weather strip, and moisture mixed in the vehicle can be efficiently processed by a simple method. It has become possible to provide a weather strip that does not easily cause unevenness in the corners without being subjected to squeeze molding, and a mounting structure thereof.

  Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 illustrates an automobile M having a sunroof S to which a weather strip according to this embodiment is attached. The sunroof S is provided with a sunroof lid 3. In the application of the present invention, the material of the sunroof lid 3 is not limited to glass or resin, but as described above, resin has become the mainstay in recent years. Moreover, the sunroof lid 3 should just be transparent and may be formed with the colored resin.

  FIG. 2 exemplifies the overall structure of the weather strip according to the present invention, which has two mold forming portions K and two core punched holes C, and is formed so as to fit the shape of the sunroof S. When the weather strip is mounted on the body of the automobile M, it is preferable to arrange the mold forming portion K so as to be the lowest position of the weather strip.

  FIGS. 3A and 3B show a cross-sectional structure of the rubber weather strip 4 according to this embodiment, and FIGS. 3C and 4D show a cross-section of the mounting structure of the weather strip 4 and the sunroof lid 3. The configuration is shown.

  As shown in FIG. 3 (a), the portion other than the mold forming portion K of the weather strip 4 has a groove that can be fitted to the weather strip mounting portion 2a of the stay 2, has a convex portion, and has a wide top portion. A solid rubber base portion 4b having a substantially U-shaped cross section, and a lip seal portion 4a and a solid rubber base portion 4b so as to be positioned on the center side of the sunroof lid 3 after being attached to the stay 2 on the top portion 4d of the solid rubber base portion 4b. A hollow seal portion 4c is formed in a loop shape with an end in the vicinity of the upper end of the side surface portion of the rim, and bulges outward from the end portion of the sunroof lid 3 after being attached to the stay 2. Moreover, the case where the water guidance valve part 4e is provided so that it may face the lower surface of the through-hole 7 provided in the shaping | molding part K is illustrated. Details of the water guide valve portion 4e will be described later.

  Further, in the mold forming portion K, as shown in FIG. 3 (b), the weather strip mounting portion 2a of the stay 2 is shortened, and the solid rubber base portion 4b has a shallow groove that can be fitted thereto, and a space. A through hole 7 penetrating the 6 side and the hollow seal portion 4c side is formed. Further, a water guide valve portion 4e is provided on the space 6 side of the through hole 7. Since it is relatively easy to arbitrarily set the shape and thickness of the molded part K, in the present invention, the shape of the through hole 7 is maintained even when the weather strip 4 is attached. An optimum shape and thickness is formed.

  The shape of the through hole 7 can be arbitrarily set according to the specification, but the cross-sectional area preferably has a size of φ2 or more in order to ensure the drainage function by the dead weight of the generated water droplet. In addition, a variety of cross-sectional shapes such as a circle, an ellipse, or a polygon can be used. However, as shown in FIG. Moreover, the case where the water guidance valve part 4e is provided so that it may face the lower surface of the through-hole 7 is illustrated. Details of the water guide valve portion 4e will be described later.

  Further, the through hole 7 is preferably provided so as to have an inclination of 5 to 45 ° in the state after the weather strip 4 is mounted in order to increase the efficiency of the discharge function.

  Here, the weather strip 4 is continuously manufactured by an extrusion molding method using rubber materials such as polychloroprene rubber and ethylene propylene rubber (EPDM) that are generally used. The lip seal portion 4a, the hollow seal portion 4c, and the water induction valve portion 4e are preferably formed of foamed rubber.

  FIGS. 3C and 3D show a cross-sectional configuration of the mounting structure of the weather strip 4 and the sunroof lid 3 when the sunroof S is closed.

  As shown in FIG. 3C, in the portion other than the mold forming portion K of the weather strip 4, the groove portion of the solid rubber base portion 4b is fitted to the weather strip mounting portion 2a of the stay 2, and the lip seal portion 4a The front end portion is in elastic contact with the indoor surface of the sunroof lid 3 and the hollow seal portion 4c is elastically in contact with the opening end portion of the body 1, so that the sunroof S has a waterproof function. The water guide valve portion 4 e has a function of guiding rainwater in the space 6 to the through hole 7 by elastically contacting the stay 2 in a plane.

  Further, in the molded part K, as shown in FIG. 3 (d), the groove part of the solid rubber base 4b having the through hole 7 is fitted into the part where the weatherstrip mounting part 2a of the stay 2 is shortened. The tip portion of the seal portion 4a is in elastic contact with the indoor surface of the sunroof lid 3, and the hollow seal portion 4c is elastically in contact with the opening end portion of the body 1, so that it has a waterproof function in the sunroof S. 6 has the function of draining rainwater that has invaded. Further, since the water guide valve portion 4e is elastically contacted with the stay 2 in a planar manner, rainwater in the space 6 can be guided to the through hole 7 to ensure a smooth drainage function.

  Here, the water guide valve part 4e is not necessarily required in the entire circumference of the weather strip 4 in the present invention, and the inclination of the sunroof S, the shape of the stay 2, Depending on conditions such as the angle of the through hole 7, it can be omitted except in the vicinity of the through hole 7, or can be omitted in the entire circumference of the weather strip 4.

  When the weather strip 4 is mounted, the mold forming portion K is arranged so as to be at the lowest position, so that rainwater flowing into the space 6 is received by its own weight through the through hole 7, the hollow seal portion 4c and the core hole C. 8 can be discharged to the outside of the vehicle. The water receiver 8 also makes it possible to prevent water collected in the sunroof S from falling directly into the vehicle when the sunroof lid 3 is opened.

  Here, the lip seal portion 4a is assembled to the sunroof lid 3 by attaching the weather strip 4 to the stay 2, and as shown in FIGS. 3 (c) and 3 (d), the lower surface of the sunroof lid 3 (indoor side) It comes into elastic contact with the surface) and exhibits sealing properties. Therefore, it is necessary that the tip of the lip seal portion 4a is formed so as to protrude above the position of the lower surface of the sunroof lid 3 after assembly, and the protrusion height varies in the thickness of the sunroof lid 3. In consideration of the above, it is preferable that the sunroof lid 3 is formed to have a height that protrudes upward by 0.5 mm or more from the lower surface position. According to this configuration, the lip seal portion and the lower surface of the sunroof lid are in line contact with each other, and the sealing performance is excellent. Further, the spring elasticity of the elastic contact between the lip seal portion and the lower surface of the sunroof lid can be easily set by changing the thickness of the lip seal portion or the like. Although the lip seal portion 4a has an example in which the cross-sectional shape is “<”, at least the tip portion is inclined toward the end portion with respect to the sunroof lid 3, and the tip portion is the end of the sunroof lid. The shape is not limited as long as it can be elastically contacted to the part side.

  Moreover, it is preferable that the front-end | tip cross section of the lip seal part 4a is formed in circular arc shape, and it is preferable that R of an arc-shaped part is 0.3-1.0 mm, and is about 0.5-0.7 mm. More preferably. The smaller the R of the arc-shaped portion in the tip cross section, the better the sealing performance, but it is preferable that the radius is less than 0.3 mm. However, if it is in the above range, the production yield can be kept high. When the radius R of the arcuate portion in the tip cross section exceeds 1.0 mm, the sealing performance at the time of elastic contact with the sunroof lid tends to be lowered. R is more preferably 0.5 to 0.7 mm. However, the shape of the lip seal portion only needs to be inclined toward the end portion side of the sunroof lid, and the shape of the lip seal portion does not necessarily need to be a “shape”.

  The hollow seal portion 4c is formed in a loop shape having a cavity inside, and a space capable of maintaining a sealing property is widened between the hollow seal portion 4c and the automobile body 1 to be elastically contacted. That is, as shown in FIGS. 3 (c) and 3 (d), if it is elastically contacted with the automobile body 1 in a bent state, even if the sunroof lid 3 contracts when it is closed, the contracting action is reduced. Accordingly, the hollow seal portion 4c follows and the sealing performance is maintained. The size of the hollow seal portion 4c is set to a size that can be sufficiently sealed even if the dimensional change of the sunroof lid 3 occurs.

  The shape of the stay 2 is not particularly limited. In the example shown in FIGS. 3C and 3D, the stay 2 has an adhesive portion 2b parallel to the sunroof lid 3 and a weather strip mounting portion 2a. The weather strip mounting portion 2a is erected substantially perpendicular to the direction of the sunroof lid 3, and is formed so as to be positioned closer to the center of the indoor side surface than the end of the sunroof lid 3 after assembly. Further, in the present invention, as shown in FIG. 4, a structure having a notch portion is provided so that the mold forming portion K can be easily mounted, and the mold forming portion K and means such as a clip stopper are provided. Therefore, the weather strip is prevented from being displaced in the circumferential direction to ensure the fixing.

  Further, the fixing of the sunroof lid 3 is not particularly limited. However, in the example shown in FIGS. 3C and 3D, the sunroof lid 3 is fixed to the stay 2 by the adhesive 5. The adhesive is not particularly limited as long as the sunroof lid 3 and the stay 2 are bonded to each other with a predetermined strength, and the adhesive layer may be provided on both end surfaces of the vulcanized rubber. It is also possible to use an elastic adhesive that is entirely cured by reaction, such as a sealant. It is more preferable to use a commercially available elastic adhesive.

[Another embodiment]
In the present invention, the hollow seal portion may be in elastic contact with the lower surface position of the sunroof lid regardless of whether the sunroof lid is opened or closed, and the sunroof lid is closed so that the hollow seal portion is positioned at the lower surface position or the lower surface of the sunroof lid. It may be configured to exhibit sealing properties by elastic contact in the vicinity of the position.

  Although the weather strip used for the sunroof has been described above, it is needless to say that the same technique can be applied to members that can be opened and closed other than the sunroof, and is not limited to the above.

1 is a perspective view of an automobile to which a weather strip mounting structure according to the present invention is attached. Overall view of weather strip according to the present invention Sectional view of weather strip according to the present invention and sectional view of an installed state Explanatory drawing of the notch part of the stay for the attachment of the weather strip which concerns on this invention Partial sectional view of a conventional weatherstrip mounting structure

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Body 2 Stay 2a Weather strip mounting part 3 Sunroof lid 4 Weather strip 4a Lip seal part 4b Solid rubber base part 4c Hollow seal part 4d Solid rubber top part 4e Water guide valve part 6 Space 7 Through hole 8 Water receptacle C Core hole K Molding part M Car S Sunroof

Claims (3)

In the weather strip that is attached to the stay joined to the indoor surface side of the sunroof lid and seals against the body elastically when the sunroof is closed,
The solid rubber base part fitted and fixed to the stay has at least one or more through holes, and the through holes can be fixed with a predetermined inclination angle with respect to the perpendicular ,
The weather strip is erected so as to be positioned on the solid rubber base and the central portion side of the sunroof lid, and at least a tip portion thereof is inclined toward the end portion direction of the sunroof lid so as to be indoor side of the sunroof lid A lip seal portion elastically contacting the surface, a hollow seal portion formed so as to be positioned on the end of the sunroof lid of the solid rubber base, and elastically contacting the opening end of the body when the sunroof is closed, and a stay in the through hole A weather guide valve provided on a side lower surface and elastically contacting the stay in a planar manner, and at least one core punched hole in either the solid rubber base or the hollow seal portion strip. The weather strip according to claim 1, wherein a part of the solid rubber base part has a molding part fitted into the stay, and the through hole is provided in the molding part. The weather strip according to claim 1 or 2 a mounting structure of a weather strip attached to the sunroof lid, said weatherstrip is mounted by fitting the solid rubber base to stay, the stay one A cut-out portion is formed in the cut-out portion, and a molded portion is fitted into the cut-out portion, and the hollow seal portion bulges outward from the end portion of the sunroof lid so that the hollow seal portion is the body when the sunroof is closed. elastic contact with the open end of the molded part is disposed in the lowest-order of the weather strip in the mounted state, the coring holes are provided down the solid rubber base or hollow seal portion, the through hole A weatherstrip mounting structure, characterized in that a water receiver is arranged below the lower part and the core hole.

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