JP2008063742A - Water splash-preventing structure of drain passage - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water splash-preventing structure of a drain passage, which can efficiently prevent the splash of a water drop falling from a closed portion between an opening/closing body and an opening, without making a side wall of a drain passage high. <P>SOLUTION: Irregular portions 30 for fractionating the water drop Wd, intruding and falling from the closed portion 10, are provided on the bottom surfaces 21 of the drain passages 20 which are arranged at predetermined intervals below the closed portion 10 between a lid 4 and the opening 3, respectively. Thus, the falling energy of the water drop Wd is absorbed by the fractionation of the water drop Wd, so that the splash of the crushed water drop Wd can be lowered. Further, the size of the drain passage 20 is prevented from increasing in the height direction so that a ceiling of a cabin can be prevented from becoming lower. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  In the present invention, when rain water or car wash water that has entered from a closed portion of an opening provided in a roof portion of a vehicle and an opening / closing body that opens and closes the opening falls into a drain passage, the dropped water droplets are surrounded by the surroundings. The present invention relates to a water splash prevention structure for a drain passage that is prevented from jumping.

  A sunroof device is provided in the roof portion of a vehicle such as an automobile so that the opening formed in the roof portion can be opened and closed with a lid which is an opening and closing body. In this case, a closed portion between the lid and the opening portion In this case, a weather strip is provided at the end of the lid, and the weather strip is brought into contact with the inner periphery of the opening to achieve liquid tightness.

However, even when the weather strip is provided in this manner to make the closed portion liquid-tight, rainwater may enter the vehicle interior side through the contact portion between the weather strip and the opening. For this reason, a saddle-shaped drain passage that receives rainwater that has passed through the closed portion is provided on the inner side of the closed portion between the lid and the opening (see, for example, Patent Document 1).
Japanese Examined Patent Publication No. 6-88502 (2nd page, FIG. 1)

  However, since the drain passage of such a conventional sunroof device has a predetermined distance between the closed portion of the lid and the opening and the drain passage, the rainwater that has passed through the contact portion between the weather strip and the opening is provided. When the water droplets fall into the drain passage, the water droplets jump on the bottom surface of the drain passage and scatter around.

  When water droplets are thus scattered, the droplets get over the side wall of the bowl-shaped drain passage and splash on the vehicle interior side, that is, the back side of the head lining covering the vehicle interior side of the roof panel.

  For this reason, in order to prevent the splash from splashing from the drain passage, it is necessary to raise the side wall of the drain passage, which inevitably increases the size of the drain passage in the vertical direction and lowers the headlining position. The ceiling height will be low.

  Therefore, the present invention provides a water splash prevention structure for a drain passage that can efficiently prevent water droplets falling from the closed portion of the opening and closing body and the opening without increasing the side wall of the drain passage.

  The present invention includes an opening formed in the roof portion and an opening / closing body that opens and closes the opening, and the opening / closing body and the opening are provided below a closing portion of the opening / closing body and the opening. The vehicle is provided with a bowl-shaped drain passage for receiving rainwater or the like that has passed through the closed portion, and provided with a water droplet crushing means for subdividing the water droplets entering from the closed portion and falling on the bottom surface of the drain passage. Is the most important feature.

  According to the present invention, water droplets falling from the closed portion of the opening and closing body and the opening are received by the drain passage. At that time, when the dropped water droplets reach the bottom surface of the drain passage, the water droplet crushing means provided on the bottom surface Since the water droplets are subdivided by the above, the drop energy of the water droplets is absorbed by the subdivision at that time, and the jumping height of the crushed water droplets can be lowered.

  Therefore, it becomes possible to prevent the splashes of crushed water droplets from splashing outside the drain passage without increasing the side wall of the drain passage. It can be prevented from lowering.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  1 to 5 show a first embodiment of a water splash prevention structure for a drain passage according to the present invention, FIG. 1 is an overall perspective view showing a drainage structure of a sunroof device to which the present invention is applied, and FIG. FIG. 3 is an enlarged perspective view of a portion B in FIG. 1 and FIG. 4 is an enlarged view of a portion C in FIG. 2. A sectional view and FIG. 5 are enlarged perspective views of the water droplet crushing means.

  The water splash prevention structure of the drain passage according to the present embodiment is applied to a sunroof device 1 provided in a roof portion of an automobile as shown in FIG. 1, and the sunroof device 1 is a roof panel 2 as shown in FIG. And a lid 4 as an opening / closing body that opens and closes the opening 3. In FIG. 1, the opening 3 is not shown because the roof panel is omitted, and the lid 4 is also omitted for convenience.

  Both sides of the lid 4 in the vehicle width direction are fixed to a lid bracket 5 shown in FIG. 1, and the opening 3 is opened and closed while the lid 4 is fixed to the lid bracket 5.

  Further, as shown in the figure, the lower side of the sunroof device 1, that is, the vehicle interior side is covered with a headlining 6. The headlining 6 has an indoor opening 6a at a position corresponding to the opening 3. The indoor opening 6a is formed and can be opened and closed by a sunshade (not shown).

  In the sunroof device 1, a pair of left and right guide rails 7 are opposed to each other in the vehicle width direction, and the tilt mechanism 8 and the slide mechanism 9 are interposed between the guide rails 7 and the lid bracket 5. The tilt mechanism 8 opens and closes the opening 3 by tilting the rear end of the lid 4 upward, and the slide mechanism 9 opens and closes the lid 4 by moving the lid 4 back and forth along the guide rail 7. 3 is opened and closed.

  When either the tilt mechanism 8 or the slide mechanism 9 is used, when the opening 3 is closed by the lid 4, the rear edge of the lid 4 is behind the opening 3 as shown in FIG. The closed portion 10 is brought into contact with the peripheral edge.

  A weather strip 11 is attached to the peripheral edge of the lid 4, while the peripheral edge of the opening 3 is bent downward in a substantially U-shaped cross section, and the tip of the weather strip 11 is the opening 3. It is contact | abutted to the front-end | tip part bent in the U-shape of the peripheral part.

  A drain passage 20 is disposed at a predetermined interval below the closing portion 10 between the rear edge of the lid 4 and the opening 3, and the drain passage 20 receives rainwater leaking from the closing portion 10. ing.

  As shown in FIG. 2, the drain passage 20 is formed in a substantially U-shaped cross section by a bottom surface 21 and front and rear side walls 22, 23 rising from both front and rear sides of the bottom surface 21. It extends in the vehicle width direction so as to straddle. A weather strip 24 is attached to the upper end portion of the front side wall 22.

  Further, on the outer side in the vehicle width direction of the guide rail 7, a side drain passage 25 having a substantially U-shaped cross section is formed in the vehicle front-rear direction along the guide rail 7, as shown in FIG. Both ends 20a of the drain passage 20 are positioned above the concave portion 25a through which rainwater or the like flows in the side drain passage 25.

  That is, a drooping piece 21 a is formed at both ends 20 a of the drain passage 20 by extending the bottom surface 21 and bending downward. The drooping piece 21 a is inserted into the recess 25 a of the side drain passage 25.

  Accordingly, rainwater or the like flowing in the direction of the both ends 20a through the drain passage 20 falls from the hanging piece 21a of the both ends 20a to the recess 25a of the side drain passage 25 and then to the front and rear end portions of the side drain passage 25. It is discharged out of the vehicle through the provided drain hose 26.

  Here, as a cause of rainwater etc. leaking from the closed portion 10, as shown in FIG. 2, there is a portion where the contact force is weak at the contact portion between the weather strip 11 and the peripheral portion of the opening 3 bent in a U shape. If there is, rainwater W collected on the upper side of the contact portion may penetrate rainwater W or the like from a portion with weak contact force and pass to the interior of the closed portion 10.

  In this way, rainwater or the like that has passed through the contact portion (the closed portion 10) of the weather strip 11 falls into the bottom surface 21 of the drain passage 20 as a water droplet Wd.

  Here, according to the present invention, the bottom surface 21 of the drain passage 20 is provided with a concavo-convex portion 30 as water droplet crushing means for subdividing the water droplet Wd that enters and falls from the closed portion 10.

  As shown in FIG. 4, the uneven portion 30 is formed by a large number of convex portions 31 protruding from the bottom surface 21 of the drain passage 20. In this case, as for the said uneven | corrugated | grooved part 30, as shown in FIG. 5, the convex part 31 is independently formed in the forest stand shape.

  In addition, each protruding portion 31 is formed so that the protruding tip side is tapered at an acute angle. In addition, although the front-end | tip of the convex part 31 tapered to acute angle may be sharp, in this embodiment, it is the shape which excised the front-end | tip part so that it may become a cross-sectional trapezoid shape.

  With the above configuration, according to the water splash prevention structure of the drain passage of the present embodiment, when the water droplet Wd falls from the closed portion 10 between the lid 4 and the opening 3, the water droplet Wd is received by the drain passage 20, It can prevent falling directly on the headlining 6.

  At this time, when the water droplet Wd dropped from the closed portion 10 reaches the bottom surface 21 of the drain passage 20, the water droplet Wd is subdivided by the uneven portion 30 provided on the bottom surface 21. The falling energy of the water is absorbed, and the jumping height of the crushed water droplet Wd can be lowered.

  Therefore, the drain passage 20 can prevent the smashed water droplets Wd from splashing outside the drain passage 20 without increasing the side walls 22 and 23, and thus the drain passage 20 can be enlarged in the height direction. It is possible to prevent the ceiling height in the vehicle interior from being lowered.

  In the present embodiment, since the uneven portion 30 is formed by a large number of convex portions 31 protruding from the bottom surface 21 of the drain passage 20 as shown in FIG. 4, the dropped water droplets Wd can be subdivided more efficiently. Is possible.

  Furthermore, since the concavo-convex portions 30 are individually formed in a forested manner as the convex portions 31 as shown in FIG. 5, the dropped water droplets Wd are distributed in all directions along the bottom surface 21 of the drain passage 20. It becomes possible to subdivide, and the effect of crushing the water droplets Wd can be further enhanced.

  Furthermore, since the projecting tip side of each convex portion 31 is tapered at an acute angle, the dropped water droplet Wd or the water droplet Wd subdivided at the tip portion of the convex portion 31 is temporarily separated from the bottom surface 21 side by the side surface of the convex portion 31. Therefore, it is possible to prevent the water droplet Wd colliding with the convex portion 31 from directly splashing upward, and to enhance the diffusion preventing effect of the crushed water droplet Wd.

  FIG. 6 shows a second embodiment of the present invention, in which the same components as those in the first embodiment are denoted by the same reference numerals and redundant description is omitted, and FIG. 6 is an enlarged perspective view of the water droplet crushing means. It is.

  The water splash prevention structure of the drain passage according to this embodiment is basically the same as that of the first embodiment, and a predetermined interval is provided below the closing portion 10 between the lid 4 and the opening 3 as shown in FIG. A drain passage 20 is provided, and a bottom surface 21 of the drain passage 20 is provided with a concavo-convex portion 30 for crushing the water droplet Wd leaking from the closed portion 10. The concavo-convex portion 30 is provided on the bottom surface 21 of the drain passage 20. It is formed by a large number of convex portions 32 protruding from.

  In the present embodiment, as shown in FIG. 6, the convex portion 32 is formed continuously in the length direction of the drain passage 20.

  That is, the protrusions 32 are formed as protrusions that are continuous in the length direction of the drain passage 20, and a large number of the protrusions 32 are arranged over substantially the entire width of the bottom surface 21 of the drain passage 20.

  Further, even in the present embodiment, as in the first embodiment, the protruding tip side of each convex portion 32 has an acute angle tapered shape.

  With the above configuration, according to the water splash prevention structure of the drain passage of the present embodiment, by providing the uneven portion 30 as in the first embodiment, it is possible to reduce the height at which the dropped water droplets Wd are crushed and jumped. At the same time, since the concavo-convex portion 30 is formed by a large number of convex portions 32, the dropped water droplets Wd can be crushed more efficiently, and the protruding tip side of the convex portions 32 is tapered at an acute angle. Thus, the effect of preventing diffusion of the crushed water droplets Wd can be enhanced.

  And in this embodiment, since the said convex part 32 was formed continuously in the length direction of the drain channel | path 20, since the rain water W accumulates substantially equally among the many convex parts 32 continuous in these length directions, Even when a large acceleration in the front-rear direction is applied during sudden start or braking of the automobile, it is possible to prevent the rainwater W in the drain passage 20 from being concentrated on the front side wall 22 or the rear side wall 23 and being offset. It is possible to prevent rainwater or the like W from getting over the side walls 22 and 23 and spilling on the headlining 6.

  Therefore, the front and rear side walls 22 and 23 can be formed low by making the convex portion 32 continuous in the length direction, and thus the drain passage 20 can be downsized in the height direction. The interior space can be expanded by increasing the height.

  By the way, the water splash prevention structure of the drain passage of the present invention has been described by taking the first and second embodiments as examples. However, the present invention is not limited to these embodiments, and other embodiments are within the scope of the present invention. For example, as shown in FIG. 3, the present invention can also be applied to the bottom surface of the recess 25 a of the side drain passage 25 where rain water or the like W falls from both ends 20 a of the drain passage 20.

  Further, without being limited to the sunroof device 1, in the vicinity of the flip-up type back door provided on the rear surface of the vehicle body, the hinge side (upper side) end of the back door and the upper edge of the back door opening at the rear end of the roof panel A drain passage is also provided between the two, but the present invention can be applied to the bottom of the drain passage.

The whole perspective view showing the drainage structure of the sunroof device to which the present invention is applied. The expanded sectional view of the closing part of the opening-closing body and opening made into a cross section from the site | part corresponding to the AA line in FIG. The expansion perspective view of the B section in FIG. The expanded sectional view of the C section in FIG. The expansion perspective view of the water droplet crushing means in 1st Embodiment of this invention. The expansion perspective view of the water droplet crushing means in 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Sunroof apparatus 2 Roof panel 3 Opening part 4 Lid (opening-closing body)
10 Closed portion 20 Drain passage 21 Bottom surface 30 Concavity and convexity (water droplet crushing means)
31, 32 Convex part W Rain water Wd Water drop

Claims (5)

Rain water or the like that has an opening formed in the roof portion and an opening / closing body that opens and closes the opening, and that passes through the closing portion between the opening / closing body and the opening, below the closing portion between the opening / closing body and the opening. A vehicle provided with a bowl-shaped drain passage for catching
A water splash preventing structure for a drain passage, characterized in that a water droplet crushing means for subdividing a water droplet that enters and falls from the closed portion is provided on a bottom surface of the drain passage.   2. The water splash preventing structure for a drain passage according to claim 1, wherein the water droplet crushing means is a concavo-convex portion in which a large number of convex portions protrude from the bottom surface of the drain passage.   The water splash prevention structure for a drain passage according to claim 2, wherein the projections and depressions are individually independent in a forested manner.   The water splash prevention structure for a drain passage according to claim 2, wherein the projections and depressions are continuous in the length direction of the drain passage.   The water splash prevention structure for a drain passage according to any one of claims 2 to 4, wherein the protrusions and recesses are formed such that the protruding tip side of the protrusions is tapered at an acute angle.

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