JP2013063703A - Fixing structure of sheet metal member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the fixing structure of the sheet metal member which can avoid the fall of the fixed strength of a superposed part, while enabling to prevent the generation of a rust in the superposed part of the bottom of the box-like first sheet metal member and the second sheet metal member and can improve the appearance quality of the superposed part.SOLUTION: The bottom 10T of the box-like first sheet metal member 10 laps over the second sheet metal member 6 and a plurality of fix parts 20 of the first sheet metal member 10 are fixed to a plurality of fixed parts 30 of the second sheet metal member 6 respectively, and the gap S is formed between the first sheet metal member part 55 other than a plurality of fix parts 20 and the second sheet metal member part 56 other than a plurality of fixed parts 30. The annular sealer 40, which surrounds a plurality of fix parts 20 and a plurality of fixed parts 30, is applied between the bottom 10T of the first sheet metal member 10 and the second sheet metal member 6, and the drainage part, which discharges the water in the area surrounded by the toroidal sealer 40 to outside of area, is formed.

Description

The present invention
The bottom of the box-shaped first sheet metal member is overlaid on the second sheet metal member,
The present invention relates to a sheet metal member fixing structure in which a plurality of fixing portions of the first sheet metal member are separately fixed to a plurality of fixed portions of the second sheet metal member.

As an example of the above-described fixing structure of the sheet metal member, there is a fuel supply part structure of an automobile disclosed in Patent Document 1. In this fuel refueling part structure, rainwater enters through a gap between the fuel lid and the side body outer panel, so that the outer surface (exposed surface) of each part of the fuel refueling part structure is subjected to electrodeposition coating. However, electrodeposition coating is not possible on both overlapping surfaces of the bottom portion of the fuel box as the first sheet metal member and the overlapping portion of the wheel house outer panel as the second sheet metal member, and the overlapping surfaces are not painted. .
Conventionally, the fuel box has been in close contact with the wheel house outer panel almost entirely on the bottom. Therefore, when the rainwater permeates between the two overlapping surfaces, the rainwater stays between the two overlapping surfaces for a long time, and rust is easily generated on the overlapping surfaces.
In recent years, a self-refueling system has been adopted in which a passenger fills a car at a gas station. If rust occurs on the overlapping surface, the rust can be seen when the passenger opens the fuel lid, reducing the commercial value of the car. It was. In addition, rust is generated on the overlapping surface, which may reduce the fixing strength of the bottom of the fuel box and the wheel house outer panel.
As disclosed in Patent Document 2, there is also a means for preventing water from entering the overlapping portion by externally fitting a resin waterproof ring to the fuel neck. According to this means, The number of parts increases and the manufacturing cost increases.
There is also a means for separating the entire bottom surface of the fuel box from the wheel house outer panel, but this means reduces the fixing strength of the fuel box to the vehicle body.

JP-A-9-109701 JP 2010-254254 A

  The present invention has been made in view of the above-described actual condition, and the object thereof is to prevent the occurrence of rust at the overlapping portion of the bottom portion of the box-shaped first sheet metal member and the second sheet metal member, and the overlapping portion. It is possible to suppress the deterioration of the external appearance quality, avoid the decrease of the fixing strength of the overlapped portion, and obtain these effects while suppressing the increase in the number of parts and reducing the production cost. It is in the point which provides the fixing structure of the sheet-metal member which can do.

The feature of the present invention is that
The bottom of the box-shaped first sheet metal member is overlaid on the second sheet metal member,
The fixing structure of the sheet metal member, wherein the plurality of fixing portions of the first sheet metal member are separately fixed to the plurality of fixed portions of the second sheet metal member,
The first sheet metal member portion other than the plurality of fixing portions and the second sheet metal member portion other than the plurality of fixed portions are separated from each other, and is used for drainage between the first sheet metal member portion and the second sheet metal member portion. Gap is formed,
An annular sealer surrounding the plurality of fixed portions and the plurality of fixed portions when viewed from the direction in which the bottom portion of the first sheet metal member and the second sheet metal member overlap, the bottom portion of the first sheet metal member and the second Applied between sheet metal members,
A drainage part for discharging water in the region surrounded by the sealer to the outside of the region is formed. (Claim 1)

According to said structure, seeing from the direction where the bottom part of a 1st sheet metal member and a 2nd sheet metal member overlap, the cyclic | annular sealer which surrounds these fixed parts and these fixed parts is said 1st sheet metal member. The sealer prevents water from entering between the overlapping surfaces of the bottom portion of the first sheet metal member and the overlapping portion of the second sheet metal member. be able to.
Then, a drainage gap is formed between the first sheet metal member portion other than the plurality of fixed portions and the second sheet metal member portion other than the plurality of fixed portions, and the water in the region surrounded by the sealer Since the drainage part for discharging the water outside the area is formed, even if rainwater enters between the bottom part of the first sheet metal member and the second sheet metal member in the area surrounded by the sealer, It can be smoothly discharged from the drainage part through the gap between the bottom part and the second sheet metal member. That is, drainage of the overlapping portion can be improved and rusting can be prevented from occurring on the overlapping surface.
In addition, since the first sheet metal member portion other than the plurality of fixing portions and the second sheet metal member portion other than the plurality of fixed portions are separated from each other, the fixing portion of the first sheet metal member and the second sheet metal are separated. Since at least one of the fixed parts of the member is formed in a convex shape, when fixing the fixed part to the fixed part, an operator can easily grasp the positions of the fixed part and the fixed part, The fixing part can be easily aligned with the fixed part, and the workability of the fixing work can be improved.
And since the whole bottom part of a 1st sheet metal member and a 2nd sheet metal member are not spaced apart, the fall of the fixed strength of a 1st sheet metal member and a 2nd sheet metal member can be suppressed. (Claim 1)

In the present invention,
The first sheet metal member is an automobile fuel box,
The second sheet metal member is an automobile wheel house outer panel,
A fuel neck insertion hole is formed in the bottom portion of the fuel box and the wheel house outer panel that are overlapped with each other,
A predetermined number of fixed portions among the plurality of fixed portions of the fuel box are welded and fixed separately to a predetermined number of fixed portions of the wheel house outer panel,
The opening end of the fuel neck is inserted through the fuel neck insertion hole,
When the remaining fixing portion of the fuel box is fastened and fixed to the remaining fixed portion of the wheel house outer panel by a fastening member together with the fuel neck holder that is formed to protrude from the opening end of the fuel neck, The effect | action can be show | played. (Claim 2)

A lamp may be disposed above the fuel box, and a mounting hole for the lamp may be formed in the vehicle body panel. And there is a risk that rainwater may enter between the overlapping surface of the overlapping portion of the bottom of the fuel box and the wheel house outer panel from the mounting hole of the lamp, according to the above configuration of the present invention. The sealer can prevent water from entering between the overlapping surfaces of the bottom portion of the fuel box and the overlapping portion of the wheel house outer panel.
Even if rainwater enters between the bottom of the fuel box and the wheel house outer panel in the region surrounded by the sealer, the rainwater is smoothly discharged from the drainage through the gap between the bottom of the fuel box and the wheel house outer panel. Can be discharged. (Claim 2)

In the present invention,
When the opening of the wheel house outer panel that forms the fuel neck insertion hole is formed to have a larger diameter than the opening at the bottom of the fuel box that forms the fuel neck insertion hole, the following effects may be achieved. it can. (Claim 3)

The opening of the wheel house outer panel that forms the fuel neck insertion hole is formed to have a larger diameter than the opening of the bottom of the fuel box that forms the fuel neck insertion hole. The peripheral edge of the opening of the wheel house outer panel can be covered with the peripheral edge.
As a result, even if rust occurs on both overlapping surfaces of the bottom part of the fuel box and the overlapping part of the wheel house outer panel, the rust can be masked by the peripheral edge of the opening of the bottom part of the fuel box. It is possible to suppress a decrease in the appearance quality of the mating portion.
Further, since the opening of the wheel house outer panel has a large diameter, water can be more easily discharged from the overlapping portion, and rust is less likely to occur on the overlapping surface of the overlapping portion. be able to. (Claim 3)

In the present invention,
The fastening member is a bolt;
The remaining fixing part is formed by forming a bolt insertion hole in the bottom part of the fuel box,
If the bolt insertion hole is formed in a cutout shape communicating with the fuel neck insertion hole, the following effects can be achieved. (Claim 4)

Generally, water tends to collect between adjacent screw threads of the bolt, but the remaining fixing portion is formed by forming a bolt insertion hole at the bottom of the fuel box, and the bolt insertion hole communicates with the fuel neck insertion hole. Therefore, it is possible to easily discharge rainwater between adjacent screw threads of the bolt to the fuel neck insertion hole side. Thereby, rust can be made difficult to occur on both overlapping surfaces of the overlapping portion.
Further, since the bolt insertion hole is formed in a notch shape that communicates with the fuel neck insertion hole, it is possible to easily absorb the error of the bolt tightening position at the time of assembly, and improve the assembly performance. be able to. (Claim 4)

In the present invention,
If the drainage portion is formed by forming an opening that allows the inside and outside of the region to communicate with each other at the lower end portion of the annular sealer, the following effects can be achieved. (Claim 5)

  The drainage part can be easily formed, the manufacturing cost can be reduced, and the structure of the drainage part can be simplified. (Claim 5)

According to the present invention,
It is possible to improve the appearance quality of the overlapped portion by preventing the rust from occurring at the overlapped portion of the bottom of the box-shaped first sheet metal member and the second sheet metal member, and to improve the fixing strength of the overlapped portion. It is possible to provide a sheet metal member fixing structure capable of avoiding a decrease and obtaining these effects in a state in which an increase in the number of parts is suppressed and the manufacturing cost is reduced.

Perspective view of the left rear of the car (A) is a longitudinal cross-sectional view of the fuel supply part structure, (b) is an enlarged cross-sectional view of part A of FIG. (A) is the perspective view which looked at the fuel supply part structure from the vehicle body inside side, (b) is the exploded perspective view of Fig.3 (a). Cross-sectional view of fuel refueling part structure (cross-sectional view of the bottom of the fuel box as seen from the outside of the vehicle body) The longitudinal cross-sectional view which shows the positional relationship of the peripheral part of the fuel neck insertion hole of a fuel box, and the peripheral part of the fuel neck insertion hole of a wheel house outer panel Perspective view of fuel box Perspective view of the fuel box assembled to the wheel house outer panel

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 1, 2A, and 2B, the side body outer panel 2 is located above one end of the rear bumper 1 of the automobile. The symbol Fr in FIG. 1 is the vehicle front side, and Rr is the vehicle rear side. The side body outer panel 2 is provided with a fuel refueling part 100, the lamp receiving recess 3 is formed in the side body outer panel 2 above the fuel refueling part 100, and the arcuate lamp 5 along the wheel arch is accommodated in the lamp. It is attached to the recess 3.

  The fuel supply section 100 is configured by fixing a bottom portion 10T of a fuel box 10 (corresponding to a box-shaped first sheet metal member) to a wheel house outer panel 6 (corresponding to a second sheet metal member). Specifically, the bottom portion 10T of the fuel box 10 is superimposed on the wheel house outer panel 6 obliquely from above, and the plurality of fixing portions 20 and 21 (see FIG. 4) of the fuel box 10 are the plurality of fixed portions of the wheel house outer panel 6. 30 and 31 (see FIGS. 5 and 3B). The wheel house outer panel 6 is joined to the wheel house inner panel 7 to form a wheel house panel 8 together with the wheel house inner panel 7.

[Structure of fuel box 10]
The bottom portion 10T of the fuel box 10 is inclined so as to be positioned at the lower side in the vehicle width direction outer side W2, and the peripheral wall 10S rises from the peripheral portion of the bottom portion 10T. And the box opening 10K of the fuel box 10 is opening toward the vehicle width direction outer side W2. The box opening 10K is inclined so as to be positioned downward as it becomes the vehicle width direction outer side W2 in the longitudinal section, and a flange 10F projecting radially outward from the peripheral edge of the box opening 10K is formed on the side body outer panel 2. It is in contact with the back surface of the peripheral edge of the formed panel opening 2K.
Then, the fuel lid 70 that opens and closes the panel opening 2K (and the box opening 10K) is formed by fitting (externally fitting) the peripheral edge of the box opening 10K to the connecting cylinder portion 2T that protrudes from the peripheral edge of the panel opening 2K to the vehicle interior side. The side body outer panel 2 is connected via a hinge.

  As shown in FIGS. 2 (a) and 2 (b), circular fuel neck insertion holes H (FIG. 3 (b) and FIG. 7 are also formed in the bottom portion 10T of the fuel box 10 and the wheel house outer panel 6 that are overlapped with each other. 4 and FIG. 5, a predetermined number of fixing portions 20 of the plurality of fixing portions 20, 21 of the fuel box 10 are replaced by a predetermined number of fixed portions 30 of the wheel house outer panel 6. Are fixed by welding (spot welding).

  In the present embodiment, the predetermined number is three (not limited to this number), and two fixing portions 20 and one fixing portion 20 are positioned with the axis of the fuel neck insertion hole H interposed therebetween, Corresponding to each fixing portion 20, two fixed portions 30 and one fixed portion 30 are positioned with the axis of the fuel neck insertion hole H interposed therebetween. Each of the predetermined number (three) of the fixed portions 20 is configured by forming a dish-like convex portion that protrudes toward the inside of the vehicle body at the bottom portion 10T of the fuel box 10.

  As shown in FIGS. 4 and 5, the circular first opening 6H of the wheel house outer panel 6 that forms the fuel neck insertion hole H is a circular first portion of the bottom portion 10T of the fuel box 10 that forms the fuel neck insertion hole H. The second opening 10H has a larger diameter and is concentric with the second opening 10H.

  Then, the opening end 25A of the fuel neck 25 is inserted into the fuel neck insertion hole H from the inside of the vehicle body (see FIGS. 3A and 3B), and the remaining fixing portion 21 of the fuel box 10 is connected to the fuel. Along with the rhombus-shaped fuel neck holder 29 that projects from the open end 25A of the neck 25, it is fastened and fixed to the remaining fixed part 31 of the wheel house outer panel 6 by bolts (corresponding to a fastening member). A nut N that is screwed onto the bolt is welded and fixed to the surface of the fuel neck holder 29 on the inner side of the vehicle body. As shown in FIG. 2 (a), the fuel neck 25 is inclined so as to be positioned at the lower side in the vehicle width direction W1, and the end of the fuel neck 25 on the vehicle body inner side is connected to the fuel tank.

  In the present embodiment, the number of the remaining fixed portions 21 is two, and the number of the remaining fixed portions 31 is two. The remaining two fixing portions 21 are positioned across the axis of the fuel neck insertion hole H, and the remaining two fixed portions 31 are positioned across the axis of the fuel neck insertion hole H. doing. The remaining fixing portion 21 is configured by forming a bolt insertion hole 23 in the bottom portion 10T of the fuel box 10, and the bolt insertion hole 23 is formed in a notch shape communicating with the fuel neck insertion hole H ( (See FIGS. 6 and 7). As shown in FIG. 3B, the remaining fixed portion 31 is configured by forming a bolt insertion hole 35 in the wheel house outer panel 6.

  A disk-shaped attachment portion 27 of the fuel neck packing 26 is interposed between the fuel neck holder 29 and the wheel house outer panel 6, and a cylindrical seal portion 28 rising from the attachment portion 27 of the fuel neck packing 26 is provided on the fuel neck 25. The outer end is in close contact with the opening end 25A. As shown in FIG. 2B, annular convex portions 27A for sealing are formed on both surfaces of the attachment portion 27. As shown in FIG.

  As shown in FIG. 5, the fuel box portion 55 other than the plurality of fixing portions 20 and 21 and the wheel house outer panel portion 56 other than the plurality of fixed portions 30 and 31 are separated from each other, and the fuel box portion A drainage gap S is formed between the wheel house outer panel portion 55 and the wheel house 55. 4 and 5, when viewed from the direction in which the bottom 10T of the fuel box 10 and the wheel house outer panel 6 overlap, the plurality of fixed portions 20, 21 and the plurality of fixed portions 30, 31 are A single annular sealer 40 is applied between the bottom 10T of the fuel box 10 and the wheel house outer panel 6, and is in close contact with the bottom 10T of the fuel box 10 and the wheel house outer panel 6.

  Moreover, the drainage part 50 which discharges the water in the area | region enclosed by the said sealer 40 out of an area | region is formed. The drainage part 50 is configured by forming an opening for communicating the inside and outside of the area at the lower end of the annular sealer 40. An arrow X in FIG. 4 indicates the flow of drained water.

With the above configuration,
(1) When viewed from the direction in which the bottom portion 10T of the fuel box 10 and the wheel house outer panel 6 overlap, an annular sealer 40 surrounding the plurality of fixed portions 20 and 21 and the plurality of fixed portions 30 and 31 is a fuel. Since it is applied between the bottom portion 10T of the box 10 and the wheel house outer panel 6, it is assumed that water permeates between both overlapping surfaces of the bottom portion 10T of the fuel box 10 and the overlapping portion of the wheel house outer panel 6. The sealer 40 can prevent this.
A drainage gap S is formed between the fuel box portion 55 other than the plurality of fixed portions 20 and 21 and the wheel house outer panel portion 56 other than the plurality of fixed portions 30 and 31, and the sealer 40. Since the drainage part 50 which discharges the water in the area surrounded by the outside of the area is formed, rainwater enters between the bottom 10T of the fuel box 10 and the wheel house outer panel 6 in the area surrounded by the sealer 40. However, rainwater can be smoothly discharged from the drainage portion 50 through the gap S between the bottom portion 10T of the fuel box 10 and the wheel house outer panel 6. That is, drainage of the overlapping portion can be improved and rusting can be prevented from occurring on the overlapping surface.
Further, the fuel box 10 can be fixed by separating the fuel box portion 55 other than the plurality of fixing portions 20 and 21 and the wheel house outer panel portion 56 other than the plurality of fixed portions 30 and 31 from each other. Since the portion 20 is formed in a convex shape (see FIG. 5), when the fixing portion 20 is fixed to the fixed portion 30 by welding, the operator can easily grasp the position of the fixing portion 20, and the fixing portion 20 is fixed. Positioning to the fixed part 30 can be facilitated, and the workability of the fixing work can be improved.
And since the whole bottom part 10T of the fuel box 10 and the wheel house outer panel 6 are not separated, the fall of the fixed strength of the fuel box 10 and the wheel house outer panel 6 can be suppressed.

(2) Since the lamp 5 is disposed above the fuel box 10 and a mounting hole for the lamp 5 is formed in the vehicle body panel, the bottom 10T of the fuel box 10 and the wheel house outer panel 6 are formed from the mounting hole for the lamp 5. However, according to the above-described configuration of the present invention, the bottom portion 10T of the fuel box 10 and the overlapping portion of the wheel house outer panel 6 may be in contact with each other. The sealer 40 can prevent water from entering between the two overlapping surfaces.

(3) The circular first opening 6H of the wheel house outer panel 6 that forms the fuel neck insertion hole H is larger in diameter than the circular second opening 10H of the bottom 10T of the fuel box 10 that forms the fuel neck insertion hole H. In addition, since it is formed concentrically with the second opening 10H, the peripheral edge of the first opening 6H of the wheel house outer panel 6 is covered with the peripheral edge of the second opening 10H of the bottom 10T of the fuel box 10. Can be hidden.
As a result, even if rust is generated on the overlapping surface of the overlapping portion of the bottom portion 10T of the fuel box 10 and the wheel house outer panel 6, the rust is covered by the peripheral portion of the second opening 10H of the bottom portion 10T of the fuel box 10. It is possible to improve the appearance quality of the overlapping portion.
In addition, since the first opening 6H of the wheel house outer panel 6 is formed to have a large diameter, water can be easily discharged from the overlapping portion, and rust is less likely to occur on the overlapping surface of the overlapping portion. can do.

(4) In general, water tends to collect between adjacent screw threads of the bolt, but according to the above configuration of the present invention, the remaining fixing portion 21 has the bolt insertion hole 23 in the bottom portion 10T of the fuel box 10. Since the bolt insertion hole 23 is formed in a notch shape communicating with the fuel neck insertion hole H, it is easy to discharge rainwater between adjacent screw threads of the bolt to the fuel neck insertion hole H side. can do. Thereby, rust can be made harder to occur on both overlapping surfaces of the overlapping portion.
Further, since the bolt insertion hole 23 is formed in a notch shape communicating with the fuel neck insertion hole H, it is possible to easily absorb the error of the bolt tightening position at the time of assembly. Can be improved.

(5) Since the drainage part 50 is formed by forming an opening for communicating the inside and outside of the area at the lower end of the annular sealer 40, the drainage part 50 can be easily formed and manufactured. Cost can be reduced and the structure of the drainage part 50 can be simplified.

6 Second sheet metal member (wheel house outer panel)
6H Opening of wheel house outer panel 10 First sheet metal member (fuel box)
10T Bottom portion 10H of first sheet metal member Opening 20 at bottom portion of fuel box 20 Fixed portion (predetermined number of fixed portions)
21 fixed part (remaining fixed part)
23 Bolt insertion hole 25 Fuel neck 25A Fuel neck opening end 29 Fuel neck holder 30 Fixed part (predetermined number of fixed parts)
31 Fixed parts (remaining fixed parts)
40 Sealer 50 Drainage part 55 First sheet metal part (fuel box part)
56 Second sheet metal part (wheel house outer panel part)
H Fuel neck insertion hole S Drainage gap

Claims (5)

The bottom of the box-shaped first sheet metal member is overlaid on the second sheet metal member,
The fixing structure of the sheet metal member, wherein the plurality of fixing portions of the first sheet metal member are separately fixed to the plurality of fixed portions of the second sheet metal member,
The first sheet metal member portion other than the plurality of fixing portions and the second sheet metal member portion other than the plurality of fixed portions are separated from each other, and is used for drainage between the first sheet metal member portion and the second sheet metal member portion. Gap is formed,
An annular sealer surrounding the plurality of fixed portions and the plurality of fixed portions when viewed from the direction in which the bottom portion of the first sheet metal member and the second sheet metal member overlap, the bottom portion of the first sheet metal member and the second Applied between sheet metal members,
The fixing structure of the sheet metal member in which the drainage part which discharges | emits the water in the area | region enclosed by the said sealer outside an area | region is formed. The first sheet metal member is an automobile fuel box,
The second sheet metal member is an automobile wheel house outer panel,
A fuel neck insertion hole is formed in the bottom portion of the fuel box and the wheel house outer panel that are overlapped with each other,
A predetermined number of fixed portions among the plurality of fixed portions of the fuel box are welded and fixed separately to a predetermined number of fixed portions of the wheel house outer panel,
The opening end of the fuel neck is inserted through the fuel neck insertion hole,
2. The remaining fixing portion of the fuel box is fastened and fixed to a remaining fixed portion of the wheel house outer panel by a fastening member together with a fuel neck holder that is formed to protrude from an opening end portion of the fuel neck. The fixing structure of the sheet metal member as described.   The fixing of the sheet metal member according to claim 2, wherein an opening of the wheel house outer panel forming the fuel neck insertion hole is formed to have a larger diameter than an opening at a bottom portion of the fuel box forming the fuel neck insertion hole. Construction. The fastening member is a bolt;
The remaining fixing part is formed by forming a bolt insertion hole in the bottom part of the fuel box,
The sheet metal member fixing structure according to claim 2 or 3, wherein the bolt insertion hole is formed in a cutout shape communicating with the fuel neck insertion hole.   The sheet metal member fixing structure according to any one of claims 1 to 4, wherein the drainage portion is configured by forming an opening that communicates the inside and the outside of the region at a lower end portion of the annular sealer.

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