JP2006327327A - Drainage structure for back door - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drainage structure for a back door capable of improving design flexibility on a vehicle body side by accurately regulating a position of water drops from the back door side. <P>SOLUTION: A guide member 7 is attached to a corner part of the back door body 2. A water receiving wall 9 having the width in a periphery portion outside direction of the back door body 2 and a dam wall 10 protruded from an outer edge of the water receiving wall 9 to the back door body front surface side are formed at the guide member 7. The water receiving wall 9 and the dam wall 10 are continuously provided to cross over a door upper edge from the door side edge of the back door body 2. Through-holes 12a, 12b penetrated through the water receiving wall 9, guiding the water drops on the back door body back surface side are formed in the water receiving wall 9. A guide wall 11 protruded on the back door body back surface side is formed on at least the periphery of the through holes 12a, 12b of the guide member 7, thus dropping the water drops passing through the through-holes 12a, 12b onto the drainage part on a door opening side. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a drainage structure for a flip-up type back door disposed on a rear surface of a vehicle.

  In vehicles with a back door such as a wagon car, when the back door is flipped up and opened in rainy weather etc., water droplets such as rainwater adhering to the front of the back door will wrap around the side of the back door body. A drainage structure is provided to prevent this.

As this drainage structure, for example, a structure in which a guide member having a catching groove along a door side is attached to a back door body is known (see Patent Documents 1 and 2).
In this drainage structure, when a guide member having a catching groove is attached to the side edge of the door panel and the back door is flipped upward and opened, water drops that have flowed down from the front side of the back door body to the side are collected in the catching groove. It drains through the catch groove. Specifically, the catching groove of the guide member is continuous to the vicinity of the upper end of the door side of the back door, and the water receiving portion on the door opening side from the terminal on the upper side of the door, which is at the lowest level due to the door panel flipping up (Drain part) is dripped.
JP 2004-203071 A Japanese Patent Laid-Open No. 2004-217152

  However, in this conventional drainage structure, the opening at the end of the catch groove formed in the guide member faces the water receiving part on the door opening side when the back door is flipped up and opened. Depending on the flow rate of the water droplets flowing into the catching grooves, the water droplet dropping position on the door opening side varies. For this reason, conventionally, the water receiving portion has to be enlarged in order to prevent water droplets from being scattered around the water receiving portion on the door opening side, which is disadvantageous in terms of vehicle layout.

  Therefore, the present invention is intended to provide a drainage structure for a back door that can accurately regulate the dropping position of water droplets from the back door side, and can increase the degree of freedom of design on the vehicle body side.

  As means for solving the above-mentioned problems, the invention according to claim 1 is a back door provided in a door opening (for example, a door opening 4 in an embodiment described later) on the rear surface of the vehicle body so as to be opened and closed in the vertical direction. For example, in the back door 1) in the later-described embodiment, when the back door is flipped upward and opened, it flows down from the front side of the back door body (for example, the back door body 2 in the later-described embodiment). In the drainage structure of the back door that captures water droplets at the side edge of the back door body and drops the water droplets onto the drainage portion at the periphery of the door opening, a water receiving wall having a width in the outer peripheral portion direction of the back door body ( For example, a water receiving wall 9) in an embodiment described later and a dam wall (for example, a dam wall 10 in an embodiment described later) protruding from the outer end portion of the water receiving wall to the front side of the back door body. The cross-sectional shape obtained is continuously provided so as to straddle the door upper side from the door side edge of the peripheral edge portion of the back door body, and the water receiving wall penetrates the water receiving wall and drops water on the back door body back side. Guide holes (for example, guides in the embodiments described later) are formed at the periphery of the through-holes at the back side of the back door body while forming through holes (for example, through holes 12a and 12b in the embodiments described later) to be guided. Wall 11) was formed.

  In the case of this invention, since the water receiving wall and the dam wall are continuously provided from the door side of the back door body to the upper side of the door, the water flows from the front side of the back door body to the peripheral edge when the back door is flipped up. After the water droplets are captured by the water receiving wall and the dam wall and guided to the back side of the back door body through the through hole formed in the water receiving wall, the guide wall passes through the inside of the guide wall protruding to the back side. It is dripped at a predetermined position on the door opening side from the tip of the door. And since the guide wall which protrudes in the back surface side is formed in the outer side position of a through-hole, scattering of the water droplet to the circumference | surroundings from a through-hole is controlled by this guide wall.

The invention according to claim 2 is the invention according to claim 1, wherein a plurality of the through holes are formed in the water receiving wall.
In this case, since there are a plurality of through-holes, it is possible to eliminate the problem that water droplets trapped on the water receiving wall and the dam wall overflow over the dam wall without increasing the area of each through-hole. it can.

According to a third aspect of the present invention, in the invention of the first or second aspect, the through hole is formed in a long hole shape.
In this case, the flow rate of the water droplets passing through the through hole is limited by the surface tension acting on the shape of the long hole of the through hole.

The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the guide wall is formed continuously along the peripheral edge of the back door body, and the protrusion height of the guide wall is The height is gradually increased toward the vicinity of the formation position of the through hole.
In this case, since the protruding height of the guide wall continuously changes, water droplets that have traveled along the guide wall are reliably guided to the vicinity of the formation position of the through hole. For this reason, water droplets that have traveled along the guide wall can be accurately dropped at a predetermined position on the door opening side.

  According to this invention, water droplets are captured by the water receiving wall and the dam wall continuous from the door side edge of the back door body to the door upper side, and the water droplets are passed through the through holes formed in the water receiving wall and the back door body back side. In addition, since the water droplets that have passed through the through hole can be guided to the dropping position by the guide wall, the dropping position and the dropping amount of the water droplet from the back door side can always be accurately regulated. Therefore, since the drainage part on the door opening side can be made small, the degree of freedom in design on the vehicle body side can be further increased.

An embodiment of the present invention will be described below with reference to FIGS.
FIG. 1 is a rear view of a wagon-type vehicle having a back door 1, and FIG. 2 is a perspective view of the back door 1 as seen from the direction A in FIG. The back door 1 is supported at the center of the upper end portion of the back door main body 2 via the hinge 3 at the upper part of the door opening 4 on the rear surface of the vehicle body, and can be opened and closed with respect to the door opening 4 around the hinge 3. The back door body 2 includes a skin (symbol omitted) which is a panel material on the outside of the vehicle, a door panel 5 formed by joining a frame material (symbol omitted) on the vehicle interior side, and a door glass 6 provided on the top of the door panel 5. It has. In this embodiment, the door glass 6 has substantially the same width as the exposed portion of the door panel 5 outside the vehicle, and the vehicle outer side of the substantially upper half of the back door body 2 is constituted only by the door glass 6. . Although omitted in FIG. 2, a gas damper is interposed between the back door body 2 and the door opening 4, and the open state of the back door body 2 is maintained by this gas damper.

  In this back door 1, rainwater or the like attached to the front side of the back door body 2 when the back door 1 is flipped up to the left and right upper corners of the vehicle body extending from the door side of the back door body 2 to the upper side of the door. A resin guide member 7 for dropping water droplets at a predetermined position on the door opening 4 side is attached. The guide member 7 is attached to the back surface side of the door glass 6, and the outer edge portion thereof is formed along the door glass 6 as shown in FIGS. Has been.

  Further, the portion of the guide member 7 positioned on the inner side of the door glass 6 is an attachment base 8. In this embodiment, the attachment base 8 is adhered to the back surface of the door glass 6, and the door glass 6 is attached to the door panel. 5 is sandwiched between the door glass 6 and the door panel 5. However, the attachment base portion 8 of the guide member 7 may be merely adhered to the back surface of the door glass 6 without being sandwiched between the door glass 6 and the door panel 5. In this case, the door panel 5 can be reduced in weight and the guide member 7 can be easily attached.

  The guide member 7 has a water receiving wall 9 in an outer region of the mounting base 8 (a region extending outside the outer shape of the door glass 6), and the water receiving wall 9 is disposed outside the water receiving wall 9. The dam wall 10 protruding to the front side of the back door body and the guide wall 11 protruding to the back side of the back door body are integrally formed. The dam wall 10 and the guide wall 11 surround the outer peripheral side of the water receiving wall 9, and the dam wall 10, together with the outer peripheral end of the door glass 6, forms a groove-shaped water capturing part extending from the door side to the door upper side. Yes. A pair of through holes 12 a and 12 b are formed in the vicinity of the corner of the water receiving wall 9 so as to penetrate the water receiving wall 9 in the vertical direction. In the case of this embodiment, as shown in FIG. 3, one through hole 12a is formed in a long hole shape near the door upper side, and the other through hole 12b is formed in a perfect circle shape near the door side. . The guide wall 11 is formed so that the protruding height from the water receiving wall 9 gradually increases toward the corner portion where the through holes 12a and 12b are formed (see FIGS. 5 and 6).

  On the other hand, in a portion of the door opening 4 that is located immediately below the through holes 12a and 12b when the back door is flipped up, the water droplets dropped downward through the through holes 12a and 12b are captured and discharged outside the vehicle. A drainage part 13 as shown in FIG. 2 is provided.

  In the case of this embodiment, the end portion on the upper side of the guide member 7 extends to the position of the hinge 3, and the peripheral molding 14 of the back door body 2 is abutted. The end of the guide member 7 on the hinge 3 side slightly protrudes in the direction of the hinge 3, and at this protruding portion, the dam wall 10 bends in the direction of the hinge 3 and drops of water that has flowed down from the upper surface side of the hinge 3 together with the terminal of the peripheral molding 14. It guides on the receiving wall 9. Further, the terminal portion on the side side of the guide member 7 is abutted against the peripheral molding 14 in the same manner as the upper side.

  As described above, in this vehicle, the cross section including the water receiving wall 9 and the dam wall 10 is formed by the guide member 7 so as to be continuous from the side to the upper side of the back door main body 2, and near the corner of the water receiving wall 9. Since the through-holes 12a and 12b are formed in the front door, when the back door 1 is flipped up and opened, water droplets dropped from the front surface of the door glass 6 are captured by the water receiving wall 9 and the dam wall 10, and the water receiving wall 9 is By passing through the through holes 12a and 12b penetrating, it can be accurately dropped onto the drainage portion 13 on the door opening 4 side by the guide wall 11.

  At this time, the guide wall 11 projecting downward functions to drop water droplets that have passed through the through holes 12a and 12b at an accurate position on the door opening 4 side. Since it is formed so as to gradually increase in the vicinity of the positions where the positions 12a and 12b are formed, water droplets or the like attached to the dam wall 10 or the guide wall 11 and transmitted downward are accurately guided to the position of the drainage section 13. be able to.

The number of through holes formed in the water receiving wall 9 may be one, but when a plurality of through holes are formed as in this embodiment, the area per through hole 12a, 12b is increased. Therefore, a sufficient amount of water can be accurately guided to the lower drainage section 13. Then, as in this embodiment, when one through-hole 12a is formed near the door upper side of the water receiving wall 9 and the other through-hole 12b is formed near the door side, the hinge Water droplets flowing from the third side can flow downward from one through hole 12a, and water droplets flowing from the side edge side of the back door body 2 to the front end side can flow downward from the other through hole 12b.
Further, when the through holes 12a and 12b are formed in a long hole shape as in this embodiment, the amount of water droplets can be easily limited by the surface tension.

  The above is an embodiment in the case where the outer edge of the door glass 6 is expanded to the outside of the door panel 5, but when the door glass is smaller than the door panel, for example, as shown in FIGS. be able to.

  In this embodiment, a door glass 106 is bonded to the front surface of the door panel 105 on the skin 105a side, and a strip-shaped guide member 107 is bonded to the lower surface of the bonding flange 19 of the skin 105a of the door panel 105 and the frame 105b. The guide member 107 has an outer shape different from that described above, but is formed in a cross-section having a water receiving wall 9, a dam wall 10, and a guide wall 11 as in the above embodiment. 12a and 12b are formed. An extension member 20 to be bonded to the lower surface of the bonding flange 19 is bonded to the end of the guide member 107.

  In addition, this invention is not limited to the said embodiment, A various design change is possible in the range which does not deviate from the summary. For example, the guide member is not necessarily formed of a resin material, and a structure similar to that of the above-described embodiment can be integrally formed with the door panel. Moreover, you may form the guide wall which protrudes in the back door back surface side of a water receiving wall along the periphery of a through-hole.

The rear view of the vehicle which shows one Embodiment of this invention. The perspective view which showed the same embodiment and was seen from the A arrow direction of FIG. 1 in the state which flipped up the back door. The top view of the guide member which shows the embodiment. Sectional drawing which follows the DD cross section of FIG. 3 which shows the same embodiment. The arrow B view of FIG. 2 which shows the same embodiment. The C arrow line view of FIG. 2 which shows the same embodiment. The rear view of the vehicle which shows other embodiment of this invention. The disassembled perspective view of the component of an equivalent part to the E section of FIG. 7 which shows the embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Back door 2 ... Back door main body 4 ... Door opening 9 ... Water receiving wall 10 ... Dam wall 11 ... Guide wall 12a, 12b ... Through-hole 13 ... Drainage part

Claims (4)

A back door that can be opened and closed in the vertical direction at the door opening on the rear surface of the vehicle body, and when the back door is flipped upward and opened, water drops that have flowed down from the front side of the back door body In the drainage structure of the back door that captures at the edge and drops the waterdrop on the drainage part at the periphery of the door opening,
A cross-sectional shape including a water receiving wall having a width in the outer peripheral direction of the back door body and a dam wall protruding from the outer end of the water receiving wall to the front side of the back door body Are provided continuously from the door side to the top of the door,
While forming a through hole in the water receiving wall to guide water droplets to the back side of the back door body through the water receiving wall,
A drainage structure for a back door, characterized in that a guide wall projecting toward the back side of the back door body is formed at least on the periphery of the through hole.   The back door drainage structure according to claim 1, wherein a plurality of the through holes are formed in the water receiving wall.   The backdoor drainage structure according to claim 1 or 2, wherein the through hole is formed in a long hole shape. The guide wall is formed continuously along the peripheral edge portion of the back door body, and the protruding height of the guide wall is gradually increased toward the vicinity of the formation position of the through hole. The drainage structure of the back door as described in any one of 1-3.

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