JP2003220831A - Backdoor device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a backdoor device, which makes it possible to form a smooth continuous surface between the outer surface of the vehicle body side including a rear bumper and the outer surface of a backdoor while enlarging the full open angle of the sidewise-opening backdoor, and to prevent the accumulation of frozen water or snow on the swing track of the backdoor upon fully opening it. <P>SOLUTION: According to the sidewise-opening backdoor device, the outline of the lower end of the backdoor 1 is made to be a crank-shape comprising a first vertical side PT1, a horizontal side PT2, and a second vertical side PT3 continuous with the horizontal side PT2 and arranged closer to the vehicle center than the door rotating shaft RS is. Under and opposite to the horizontal side PT2, a drain hole 81w penetrating the bumper facer 81 is formed on the upper surface 81u of the bumper facer 81, where the drain hole 81w is opened from the intersection between a first channel 21 provided above the drain hole and the upper surface 81u of the bumper facer 81 to the position including the swing track of the first vertical side PT1 marked upon its opening and closing. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a back door device, and more particularly to a structure of a door and a vehicle body at a hinge-side lower portion of a laterally opening back door.

[0002]

2. Description of the Related Art Conventionally, in a side-opening back door device, the back door is at the fully closed position, and the door rotation shaft of the hinge member is arranged closer to the indoor side than the outer surface of the back door. A device is known in which the hinge member is not exposed to the outside. Further, in such a back door device, it is known that the lower part of the back door extends below the left and right upper ends of the rear bumper in order to secure a wide opening downward. In this way, in the shape in which the lower end of the back door is lower than the upper left and right ends of the rear bumper, when the back door is opened and closed, the portion above the rear bumper rotates at the rear position of the rear end of the vehicle body, Since the rear bumper projects rearward from the general body part, the lower end of the back door interferes with the rear bumper. Therefore, there are two techniques described below as techniques for increasing the full opening angle (about 90 °) without the lower end of the back door interfering with the rear bumper.

First, as shown in the sectional view of FIG. 8, the first technique is to prevent the outer surface of the back door 02 from interfering with the rear bumper 03 when the back door 02 is fully opened.
This is a technique in which the back door 02 is provided with a cutout portion 04 having a shape in which the door end portion on the hinge mounting side is cut inward. That is, in the drawing, 01 is a door rotating shaft, and this door rotating shaft 01 is arranged inside the outer surface of the back door 02. As a result, the hinge member does not appear on the outside of the vehicle body, the appearance quality is excellent, and wind noise can be suppressed. In this structure, when the outer surface of the back door 02 is formed to be flush with the outer surface of the rear bumper 03, the back door 02 is intended to be rotated by an angle of about 90 ° as shown by an imaginary line in the figure. In this case, the back door 02 interferes with the rear bumper 03. Therefore, the above-mentioned interference is prevented by providing the cutout portion 04 at a portion near the door rotation center 01.

However, in the first technique, the center of rotation of the hinge member, which is originally arranged inside the outer surface of the back door 02, is the outer surface of the vehicle body side and the back door side. While the back door 02 is formed with the gouged portion 04, the outer surface of the back door 02 and the bumper 03 is a smooth continuous surface. There was a problem that a large dent was made in the middle of the process, and the purpose of improving the appearance could not be achieved.

Therefore, the inventors of the present application have considered the following second technique in order to solve the problem of the first description.
The second technique is a technique in which the outer shape of the back door is formed into a crank shape in the vicinity of the hinge mounting portion at the lower end portion thereof. That is, this second technique will be described with reference to FIG. 1, which is a front view of a back door device according to an embodiment of the present invention described later, in the vicinity of the mounting portion of the lower hinge 4 of the back door 1 when viewed from the rear of the vehicle. A first vertical side PT1 is formed at a position on the vehicle outer side of the door rotation axis RS, and the first vertical side P is formed.
A lateral side PT2 extends laterally below the lower hinge 4 in succession to T1, and further to the lateral side PT2, a door rotation axis R.
The external shape is such that the second vertical side PT3 is disposed in the center of the vehicle body with respect to S and extends in the vertical direction. In this way, the second vertical side PT3 at the lower end of the back door 1 passes outside the rear bumper when the back door 1 is opened, and the two do not interfere with each other.

As described above, in the second technique, since the cutout portion 04 is not formed on the back door, the appearance can be secured. However, in this second technique, the body-side facing surface that extends laterally in opposition to the lower side PT2 of the back door has a vehicle body-side facing surface that extends from the upper portion of the vehicle body with the back door closed in winter. Water and snow that have run down may freeze and harden when they are caught by the facing surface on the vehicle body side. If the back door is opened in this state, the first vertical side PT1 of the back door may collide with this lump and the back door may not be opened to the fully open position, or the back door end may be damaged. .

The present invention has been made by paying attention to the above-mentioned conventional problems, and the outer surface of the vehicle body side including the rear bumper and the outer surface of the back door including the rear bumper are increased while increasing the full opening angle of the side opening back door. It is an object of the present invention to provide a backdoor device that can be smoothly continuous with the surface and that can prevent water, snow, etc. from freezing and accumulating on the backdoor rotation trajectory when fully opened. .

[0008]

In order to achieve the above object, in the back door device of the present invention, the back door (1) is opened and closed laterally by the hinge members (3, 4) provided on the side of the vehicle body. The hinge member (3,
When the back door (1) is in the fully closed state, 4) is arranged closer to the interior than the outer surfaces of the back door (1) and the vehicle body (2), and near the hinge mounting portion at the lower part of the back door. The external shape seen from the rear of the vehicle is the door rotation axis (R
S) arranged on the outer side of the vehicle and extending in the longitudinal direction
A vertical side (PT1), a horizontal side (PT2) which is arranged below the hinge member (4) and extends in the horizontal direction continuously with the first vertical side (PT1), and a door rotation axis (RS). A second vertical side (PT3) that is disposed closer to the center of the vehicle body than the horizontal side (PT2) and that extends continuously in the vertical direction from the horizontal side (PT2). Facing below
An upper surface (81u) of a bumper fascia (81) detachable from the vehicle body panel is provided, and a drain hole (81w) is provided through the upper surface (81u).
w) is the upper surface (81u) of the drainage groove (21) and the bumper fascia (81) on the vertical wall on the vehicle body side provided above it.
From the position where and intersect, the first vertical side of the back door (1) (P
The means is characterized in that it is opened up to a position including the opening / closing rotation locus of T1).

The invention described in claim 2 is the same as claim 1.
In the back door device according to the above paragraph, as the drainage groove, a second channel that flows to the surface of the bumper fascia (81) adjacent to the first channel (21) that flows into the drain hole (81w).
A flow path (22) is formed, and the second flow path (22) has a cross-sectional area larger than that of the first flow path (21), and water and snow flowing through the flow path are A means for guiding the back door (1) to a part (81y) which is a relative movement in the direction of leaving when the back door (1) is opened from the fully closed state on the surface of the bumper fascia (81); did.

[0010]

In the back door device of the present invention, the outer shape of the lower door portion near the hinge mounting portion is a crank shape in which the first vertical side, the horizontal side and the second vertical side are continuous. Therefore, when the door is rotated about the door rotation axis inside the back door, the first vertical side arranged outside the door rotation axis when viewed from the rear does not interfere with the vehicle body and does not interfere with the door rotation axis. And between the car body. On the other hand, when viewed from the rear, the second vertical side inside the vehicle body with respect to the door rotation axis moves outside the vehicle body without interfering with the vehicle body. As described above, in the present invention, it is possible to prevent interference with the vehicle body without providing the "dug" on the back door surface.
It can improve the appearance.

Further, water and snow flowing from above the vehicle body through the drainage groove are guided to the upper surface of the bumper fascia facing the side of the back door, but do not collect on the upper surface and fall from the drain hole. Is discharged to. Therefore, water and snow do not freeze and solidify on the upper surface of the bumper fascia facing the side of the back door, and when the back door is opened, the portion of the first vertical side that passes above the upper surface of the bumper fascia. Does not interfere with frozen water or snow clumps that collect on the top surface. Therefore, the effect that the opening degree of the back door cannot be sufficiently obtained and the tip portion of the back door is not damaged is obtained. Also,
In order to obtain the above effect, a water drain hole is made at the base of the side wall of the vehicle body, but since this water drain hole is provided in the bumper fascia that does not contribute to the vehicle body strength, the vehicle body strength is reduced by opening the water drain hole. There is no. Further, since the drain hole is opened up to a position including the rotation trajectory of the first vertical side of the back door, even if water adheres to the periphery of the drain hole and freezes, it hits the frozen mass. Is inside the tip portion of the first vertical side of the back door, and the portion that appears outside the vehicle is not damaged.

According to the second aspect of the present invention, most of the water and snow flowing from the upper part of the vehicle body through the drainage groove flows through the second flow passage having a large cross-sectional area, and the first flow passage The flow rate is low. Therefore, the flow rate toward the upper surface of the bumper facer facing the lateral side of the back door is small, and the possibility that water or snow will be accumulated on this upper surface and further frozen and solidified is further reduced. Further, water and snow flowing in the second flow path flow to the surface of the bumper fascia, but the portion of the bumper fascia surface guided by the second flow path is the movement in the direction in which the back door leaves when the back door is opened. It is a part that becomes. Therefore, even if the water or snow introduced to this part freezes and solidifies on the bumper fascia surface, when the back door is opened, the lower part of the back door moves in a direction away from that part. The bottom edge of the back door does not interfere with the block. Therefore, also in this case, it is possible to prevent the back door from interfering with the lump of water or snow and preventing the opening degree of the back door from being sufficiently obtained or from damaging the lower end portion of the back door.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing a back door device of an embodiment as seen from the rear of the vehicle. In this back door device, the back door 1 is attached to the vehicle body 2, and the upper hinge 3 is attached.
Door hinge axis R
It is supported rotatably in the horizontal direction about S. Further, the back door 1 is formed in a curved shape such that a central portion thereof is low when viewed from the rear of the vehicle, and is provided with a window 5, an outside handle 6, and a key cylinder 7.

A rear bumper 8 is attached to the vehicle body 2. The rear bumper 8 is, for example, a P.I.
A bumper fascia 81 made of a resin such as P is detachably attached to the vehicle body 2. As shown in the figure, the bumper fascia 81 is formed in a curved shape facing the lower end of the back door 1 such that the central portion of the vehicle is lowered, and the left and right ends of the bumper fascia 81 are raised portions 81t that rise upward. Are formed.

Further, at the lower end of the back door 1,
A finisher 1f made of the same resin material as the bumper fascia 81 is attached. As shown in the sectional view of FIG. 7, the finisher 1f is formed so as to bulge outward so as to form an outer surface continuous with the bumper fascia 81, and is screwed to the lower end portion of the back door 1. Further, as shown in FIG. 1, the upper end surface of the finisher 1f is formed in a straight line at the same height as the upper surface of the rising portion 81t of the bumper fascia 81. That is, the bumper fascia 81 and the finisher 1
With f, one bumper is formed so as to have an external shape extending in a substantially horizontal direction. Here, referring to FIG. 7, the bumper fascia 81 has a general portion upper surface 81 that is slightly inclined rearward and downward in the general portion.
x and a rising piece 81y that rises upward from the front end of the upper surface 81x of the general portion.
Further, the back door 1 is formed by joining an outer panel 1b and an inner panel 1c at an outer peripheral portion thereof, and a lower end portion 1k thereof extends to a position overlapping a standing piece 81y of the bumper fascia 81 in the front-rear direction. There is. The vehicle body 2 is also formed by joining the outer panel 2b and the inner panel 2c. Further, a weather strip 9 that abuts on the inner circumference of the back door 1 and seals the inside of the vehicle from the outside of the vehicle is provided at a joint portion between the panels 2b and 2c at a position above the upper end of the upright piece 81y. Furthermore, the vehicle interior side of the inner panel 2c is covered with a resin interior trim 10, and the back door 1 also has the inner panel 1c covered with a resin door trim 11.

Next, the mounting portion of the lower hinge 4 will be described with reference to FIG. 3, which is a sectional view taken along the line S3-S3 in FIG. 1. The vehicle body 2 is provided with pillars 20 arranged on the left and right sides of the back door 1. ing. The pillar 20 is formed in a box shape in which the rear ends of the outer panel 2b and the inner panel 2c are connected by a thick pillar back outer 2d to extend vertically. Further, the pillar 20 is formed with a first flow path 21 and a second flow path 22 as drainage grooves which are continuous with the drainage groove 23 provided above.
Here, if the drainage groove 23 is further described, as shown in FIG. 6 which is a cross-sectional view taken along the line S6-S6 of FIG. 1, it is formed so as to descend downward at the rear end portion of the roof 24 of the vehicle body 2. A weather strip 25 is attached to the stepped portion to form the drainage groove 23. The drainage groove 23 extends in the vehicle width direction and has a first flow path 21 and a second flow path 22 formed in the pillar 20 at both left and right ends thereof.
Is connected to the upper end of the. Further, the second flow path 22 is
As shown in FIG. 3, the cross-sectional area of the first flow path 21 is larger than that of the first flow path 21. In addition, the second flow path 22 is
As shown in FIG. 2, the lower end of the bumper fascia 81 is
7 is disposed at a position closer to the vehicle center in the vehicle width direction than the rising portion 81t of the bumper faucet 81 from the standing piece 81y of the bumper fascia 81 to the general portion upper surface 81x at a position outside the sealing position by the weather strip 9 shown in FIG. It is shaped to guide water. As shown in FIG. 7, the standing piece 81y has a positional relationship in which the lower end 1k moves relatively in the direction in which the lower end 1k moves away when the back door 1 is opened from the fully closed state.

Returning to the description of the lower hinge 4, the outer panel 1b of the back door 1 and the outer panel 2b of the vehicle body 2 have a continuous outer surface at the position of the lower hinge 4, as shown in FIG. Is formed to form. The lower hinge 4 is the back door 1
A door-side member 4b fixed to the pillar by a bolt and a vehicle body-side member 4c fixed to the pillar back outer 2d of the vehicle body 2 by a bolt are provided, and both 4b and 4c are substantially centered around the door rotation axis RS in the rotating portion 4d. It is connected so as to be rotatable in the horizontal direction. Further, the door rotation shaft RS is arranged inside the outer surfaces of the back door 1 and the vehicle body 2.

Returning to FIG. 1, when the back door 1 is viewed from the rear, in the vicinity of the lower hinge 4 which is the lower right end of the back door 1, the outer shape thereof is the door rotation axis R when viewed from the rear of the vehicle.
A first vertical side PT1 arranged on the vehicle outer side of S, a horizontal side PT2 arranged below the lower hinge 4 continuously with the first vertical side PT1, and a door rotation continuous with the horizontal side PT2. The second vertical side PT3 arranged on the vehicle body center side with respect to the axis RS
And is formed in a crank shape having. Since the outer shape of the back door 1 is formed in the crank shape as described above, the portion of the first vertical side PT1 located above the bumper fascia 81 is rotated at the time of opening and closing as shown in FIGS. 3 and 4. The locus is formed in front of the first flow path 21 without interfering with the vehicle body 2. On the other hand, in the portion of the bumper 8 that bulges rearward of the vehicle with respect to the general portion of the vehicle body 2, the turning locus at the time of opening and closing the portion forming the third vertical side PT3 is as shown in FIG. , Bumper fascia 8
1 is formed outside the bumper facer 81 without interfering with 1.

Below the lateral side PT2, a rising portion 81t of the bumper fascia 81 shown in FIG. 2 is provided.
The upper surface 81u of the bumper fascia 81 is opposed to the upper surface 81u of the second vertical side PT3, and the side surface 81s of the rising portion 81t of the bumper fascia 81 is opposed to the upper surface 81u. The upper surface 81u of the rising portion 81t of the bumper fascia 81 has the first flow path 21 formed in the pillar 20.
The water drainage hole 81w is formed so as to penetrate through the upper surface 81u. This drain hole 8
1w is a cross-sectional view taken along the line S4-S4 of FIG. 1, and as shown in FIG. 4, the first flow path 21 and the upper surface 81 of the pillar 20.
From the position where u intersects, the first vertical side PT1 of the back door 1
Is opened to a position including the opening / closing rotation locus R of.

Next, the operation of the embodiment will be described. In the back door device of the embodiment, the outer shape of the lower hinge 4 near the mounting portion of the lower hinge 4 is
Since the first vertical side PT1, the horizontal side PT2, and the second vertical side PT3 have a continuous crank shape, when viewed from the rear of the vehicle when rotated about the door rotation axis RS inside the back door 1. The first vertical side PT1 arranged outside the door rotation axis RS moves between the door rotation axis RS and the vehicle body 2 without interfering with the vehicle body 2 as shown in FIG. On the other hand, as shown in FIG. 5, the second vertical side PT3 on the inside of the vehicle body with respect to the door rotation axis RS when viewed from the rear of the vehicle has the bumper fascia 8 protruding further rearward than the rear end of the general portion of the vehicle body 2.
It moves outside the rising portion 81t without interfering with the rising portion 81t. As described above, the back door device according to the embodiment is capable of preventing interference with the vehicle body 2 when the back door 1 is opened and closed without providing a “grip” on the surface of the back door 1, and can improve the appearance. .

Further, rain or snow that has fallen on the vehicle body 2 is not covered by the roof 2.
The water flows from the drainage groove 23 at the rear end of the nozzle 4 to the left and right thereof, and then flows down through the first flow passage 21 and the second flow passage 22 which are drainage grooves provided in the pillar 20. Here, the first channel 21
The water and snow that have flowed down are guided to the upper surface 81u of the rising portion 81t of the bumper fascia 81 that faces the lateral side PT2 of the back door 1, but are not collected on this upper surface 81u and are discharged downward from the water drain hole 81w. . Therefore,
The upper surface 81u of the bumper fascia 81 facing the lateral side PT2 of the back door 1 does not freeze and solidify on the upper surface 81u, and when the back door 1 is opened, it passes above the upper surface 81u of the bumper fascia 81. The portion of the vertical side PT1 does not interfere with the frozen water accumulated in the upper surface 81u or the lump of snow. Therefore, it is possible to obtain an effect that the opening degree of the back door 1 is not sufficiently obtained and the tip portion of the back door 1 is not damaged. Further, since the water drainage hole 81w is opened up to a position including the rotation locus of the first vertical side PT1 of the back door 1, the water drainage hole 81 is provisionally provided.
Even if water adheres to the periphery of w and freezes, this frozen or pool hits the inside of the tip portion of the first vertical side PT1 of the back door 1 and the portion that appears outside the vehicle is not damaged.

Further, in order to obtain the above effect, the water drain hole 81w is opened on the vehicle body side. However, since the water drain hole 81w is provided in the bumper fascia 81 which does not contribute to the strength of the vehicle body, the water drain hole 81w should be opened. There is no decrease in car body strength. In addition, since the water drainage hole 81w is formed to have the same cross-sectional area as the cross-sectional area of the drainage groove 23 above, the water flowing through the first flow passage 21 can be efficiently drained without overflowing on the upper surface 81u. Therefore, the size of the drainage hole 81w can be set to a necessary minimum size to prevent the appearance from being deteriorated by opening the hole.

Further, as described above, most of the water and snow that flow down from the drainage groove 23 will flow through the second flow path 22 having a large cross-sectional area, and the flow rate in the first flow path 21 will be small. Therefore, the flow rate toward the upper surface 81u of the bumper fascia 81 facing the lateral side PT2 of the back door 1 is small, and the possibility that water or snow will collect on the upper surface 81u and freeze and harden further decreases. Water and snow flowing through the second flow path 22 are first guided to the upright pieces 81y of the bumper fascia 81, and then flow along the general portion upper surface 81x.
When the back door 1 is opened, the back door 1 is erected by a standing piece 8.
It moves away from 1y forward. Moreover, since the general portion upper surface 81x also has a shape that is slightly inclined rearward and inclined, the lower end portion 1k of the back door 1 moves slightly away from the parallel movement with respect to the general portion upper surface 81x. . Therefore, even if the water or snow introduced from the second flow path 22 to the upright pieces 81y of the bumper fascia 81 and the upper surface 81x of the general portion freezes and hardens at this portion, when the back door 1 is opened, the back door 1 Since the lower end portion 1k moves in a direction away from these parts, it does not interfere with the lump of water or snow. Therefore, also in this case, the back door 1 interferes with water or snow and the opening of the back door 1 cannot be sufficiently obtained.
It is prevented that the lower end of the is damaged.

Although the embodiment has been described with reference to the drawings, the present invention is not limited to this. For example, in the embodiment, the rising portion 81t of the bumper fascia 81 is arranged outside the second vertical side PT3 at the lower end portion of the back door 1, but the member forming this portion is
The point is that it is only necessary to form the vehicle body, and is not limited to the bumper fascia.

[Brief description of drawings]

FIG. 1 is a front view of a back door device of an embodiment as seen from the rear of a vehicle.

FIG. 2 is a perspective view showing a main part of a bumper fascia in the back door device according to the embodiment.

FIG. 3 is a sectional view (taken along the line S3-S3 in FIG. 1) showing a main part of the back door device according to the embodiment.

FIG. 4 is a sectional view (taken along line S4-S4 in FIG. 1) showing a main part of the back door device according to the embodiment.

FIG. 5 is a cross-sectional view (taken along line S5-S5 of FIG. 1) showing a main part of the back door device according to the embodiment.

FIG. 6 is a sectional view (taken along line S6-S6 in FIG. 1) showing a main part of the back door device according to the embodiment.

FIG. 7 is a sectional view (taken along the line S7-S7 in FIG. 1) showing a main part of the back door device according to the embodiment.

FIG. 8 is a sectional view showing a conventional technique.

[Explanation of symbols]

1 back door 1b outer panel 1c Inner panel 1f finisher 1k lower end 2 car body 2b outer panel 2c Inner panel 2d pillar back outer 3 upper hinge 4 Lower hinge 4b Door side member 4c Body side member 4d rotating part 5 windows 6 Outside handle 7 key cylinder 8 rear bumper 81 bumper fascia 81x General surface 81w drain hole 81u upper surface 81s side 81t rising part 81y standing piece 9 Weather strip 10 Interior trim 11 door trim 20 pillars 21 First flow path (drain groove) 22 Second channel (drainage groove) 23 Drainage groove 24 roof 25 Weather Strip PT1 First vertical side PT2 side PT3 second vertical side R Open / close rotation trajectory RS door rotation axis

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shun Chimatsu             2909 Ogami, Hiratsuka-shi, Kanagawa N             Within S design

Claims (2)

[Claims] 1. A back door (1) is supported by a hinge member (3, 4) provided on a side portion of a vehicle body such that it can be opened and closed laterally, and the hinge member (3, 4) is a back door (1). ) When fully closed, the back door (1) and the vehicle body (2)
The outer shape of the back door at the lower part of the back door in the vicinity of the hinge attachment part as viewed from the rear of the vehicle body is arranged outside the door rotation axis (RS) and extends in the vertical direction. First vertical side (PT
1) and a horizontal side (P) that is arranged below the hinge member (4) and that extends in the horizontal direction in succession to the first vertical side (PT1).
T2) and a crank shape having a second vertical side (PT3) which is disposed closer to the vehicle body center side than the door rotation axis (RS) and which extends in the vertical direction continuously with the horizontal side (PT2). An upper surface (81u) of a bumper fascia (81) that is detachable from the vehicle body panel and is provided below the lateral side (PT2), and penetrates through the upper surface (81u) to drain the water ( 81w) is provided, and the drainage hole (81w) is provided with a drainage groove (21) and a bumper fascia (8) provided above the vertical wall of the vehicle body side.
The back door device is characterized in that it is opened from a position where the upper surface (81u) of 1) intersects with a position including an opening / closing rotation locus of the first vertical side (PT1) of the back door (1). 2. The back door device according to claim 1, wherein the drainage groove is adjacent to the first flow path (21) flowing into the drain hole (81w) and is adjacent to the bumper fascia (81).
Forming a second flow channel (22) flowing on the surface of the first flow channel (22).
The back door (1) separates when the back door (1) is opened from the fully closed state on the surface of the bumper fascia (81) in addition to forming it larger than the cross-sectional area of 1). (81
A back door device formed so as to lead to y).