JP2016107807A - Vehicle panel structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a vehicle panel structure which enables a paint to be spreaded in a coupled portion of panels during electrodeposition painting.SOLUTION: A panel structure 20 has an upper panel 22 and a floor pan 26. The upper panel 22 has: an inclination wall 22D which inclines along an inclination direction K intersecting with a vehicle vertical direction; and a rear flange 22E extending from a vehicle vertical direction lower end part of the inclination wall 22D in a vehicle fore and aft direction. The floor pan 26 has a body part 26A and an extension part 26B. The body part 26A is coupled to a lower surface of the rear flange 22E when viewed in the vehicle vertical direction by adhesion of an adhesive 32 and spot welding. The extension part 26B extends from one vehicle fore and aft direction end part of the body part 26A along the inclination direction K to be coupled to the inclination wall 22D through the adhesive 32.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a vehicle panel structure.

  In Patent Document 1, in a pair of panels provided with a pair of flanges bonded by adhesive bonding and spot welding, a hole penetrating in the plate thickness direction is formed in one flange, and from the hole during electrodeposition coating, A vehicle panel structure in which air is discharged is disclosed.

JP 2013-136076 A

  However, in the above prior art, the shape of the adhesive that spreads by pressing at the time of spot welding is not necessarily the shape as intended. That is, there is a possibility that the recessed portion of the adhesive (portion where the adhesive does not spread) is formed shifted from the target position in the longitudinal direction of the flange. Here, when the position of the concave portion of the adhesive and the position of the hole of the flange are deviated, the amount of air that is not discharged during electrodeposition coating increases, and it becomes difficult to spread the paint to the joint portion of the flange. Therefore, there is room for improvement in spreading the paint to the bonding site of the panel during electrodeposition coating.

  An object of the present invention is to obtain a vehicle panel structure in which the above facts are taken into consideration and the paint can be spread over the joint portion of the panel during electrodeposition coating.

  According to a first aspect of the present invention, there is provided a vehicular panel structure that projects in the vehicle front-rear direction from an inclined portion that is inclined along an intersecting direction that intersects the vehicle vertical direction, and a vehicle vertical direction lower end portion of the inclined portion. A first panel having a flange, a main body portion bonded to the lower surface of the flange in the vehicle vertical direction by bonding with an adhesive and spot welding, and one end portion of the main body in the vehicle front-rear direction along the intersecting direction. And a second panel having an extending portion that is extended to be coupled to the inclined portion via the adhesive.

  In the vehicle panel structure according to the first aspect of the present invention, the flange of the first panel and the main body of the second panel along the longitudinal direction of the vehicle are coupled in the vertical direction of the vehicle by bonding with an adhesive and spot welding. ing. Further, the inclined portion of the first panel and the extending portion of the second panel along the intersecting direction are coupled with an adhesive. In addition, when spot welding is performed at a plurality of locations in the vehicle width direction of the flange, the manner in which the adhesive is crushed differs between the portion pressurized by spot welding and the portion not pressurized. That is, in the cured adhesive, a portion having a high pressure applied by spot welding is widened and a portion having a low pressure applied is narrowed, thereby forming a hollow portion opened in the vehicle front-rear direction.

  Here, when the vehicle is tilted and placed in the electrodeposition tank for electrodeposition coating, the main body of the second panel is tilted in a direction intersecting the vehicle longitudinal direction. At this time, since the extending part of the second panel extends obliquely upward with respect to the main body part, it is located on the upper side in the vehicle vertical direction with respect to one end part in the vehicle front-rear direction of the main body part. That is, between the inclined portion of the first panel and the extended portion of the second panel, the opening direction of the concave portion of the adhesive is obliquely upward, so that air (bubbles) existing in the concave portion moves obliquely upward. To do. Thus, since an air pocket is suppressed from being formed in the depression of the adhesive, it is possible to spread the coating material on the bonding portion of the panel during electrodeposition coating.

  As described above, the vehicle panel structure according to the first aspect has an excellent effect that the paint can be distributed to the joint portion of the panel during electrodeposition coating.

1 is a perspective view illustrating a part of a vehicle to which a panel structure according to an embodiment is applied. (A) It is a partial expansion perspective view of the panel structure concerning this embodiment. (B) It is a partial expanded longitudinal cross-sectional view (2B-2B sectional drawing of FIG. 1) of the panel structure concerning this embodiment. It is explanatory drawing which shows the state to which a bubble moves from the hollow part of an adhesive agent in the panel structure which concerns on this embodiment. It is a perspective view which shows the panel structure which concerns on contrast. (A) It is a partial expansion perspective view of the panel structure which concerns on proportionality. (B) It is a partial expanded longitudinal cross-sectional view (5B-5B sectional drawing of FIG. 4) of the panel structure which concerns on contrast.

  Hereinafter, an example of an embodiment of a vehicle panel structure according to the present invention will be described with reference to FIGS. Note that an arrow RR appropriately shown in each drawing indicates the rear of the vehicle, an arrow UP indicates the upper side of the vehicle, and an arrow IN indicates the inner side in the vehicle width direction. Hereinafter, when simply using the front-rear, up-down, left-right directions, unless otherwise specified, the front-rear direction of the vehicle, the up-down direction of the vehicle, the left-right direction of the vehicle width when facing the traveling direction are shown. Shall. Moreover, the x mark in a figure means the spot-welded location.

  FIG. 1 shows a part of the rear side of the vehicle 10 in the longitudinal direction of the vehicle. The vehicle 10 includes a floor cross member 12 extending in the vehicle width direction, a floor pan 26 coupled to the floor cross member 12, and a floor side member (not shown) coupled to both ends of the floor pan 26 in the vehicle width direction. It is comprised including. The floor side member is a long member arranged with the vehicle front-rear direction as a longitudinal direction. The floor pan 26 is an example of a second panel. Furthermore, the vehicle 10 has a panel structure 20 as an example of a vehicle panel structure.

<Floor cross member>
As shown in FIG. 1, the floor cross member 12 includes an upper panel 22 as an example of a first panel, and a lower panel 24 that is disposed below the upper panel 22 in the vehicle vertical direction and coupled to the upper panel 22. It is a skeleton member comprised including.

(Upper panel)
The upper panel 22 has a top wall 22A, a front wall 22B, a front flange 22C, an inclined wall 22D, and a rear flange 22E. Further, the top wall 22A, the front wall 22B, the front flange 22C, the inclined wall 22D, and the rear flange 22E each extend in the vehicle width direction. The inclined wall 22D is an example of an inclined portion. The rear flange 22E is an example of a flange.

  The top wall 22A is formed in a rectangular shape with the vehicle longitudinal direction as the short direction and the vehicle width direction as the long direction when viewed in the vehicle vertical direction. Further, the top wall 22A has a rear end in the vehicle front-rear direction that is slightly above the front end in the vehicle vertical direction when viewed in the vehicle width direction. The front wall 22B is a vertical wall that extends downward from the front end of the top wall 22A in the vehicle front-rear direction. The front flange 22C is a plate-like portion that protrudes forward from the vehicle vertical direction lower end portion of the front wall 22B with the vehicle vertical direction as the plate thickness direction.

  As shown in FIG. 2B, the inclined wall 22D is inclined rearward and downward in the vehicle front-rear direction from the rear end of the top wall 22A in the vehicle front-rear direction when viewed in the vehicle width direction. In other words, the inclined wall 22D is inclined upward in the vehicle front-rear direction front side from the vehicle front-rear direction front end portion of the rear flange 22E. Here, an angle θ1 (acute angle) formed by the lower surface of the inclined wall 22D in the vertical direction of the vehicle and the lower surface of the rear flange 22E in the vertical direction of the vehicle is defined as the inclination angle of the inclined wall 22D.

  In the following description, the inclination direction of the inclined wall 22D with respect to the vehicle vertical direction is referred to as the inclination direction K in a state where the lower surface of the rear flange 22E is disposed along the vehicle front-rear direction. The inclination direction K is an example of an intersecting direction that intersects the vehicle vertical direction. The inclined wall 22D is shorter in the vehicle vertical direction than the front wall 22B (see FIG. 1) in the vehicle vertical direction when viewed in the vehicle longitudinal direction.

  The rear flange 22E is a plate-like portion that protrudes rearward from the vehicle vertical direction lower end portion (vehicle longitudinal direction rear end portion) of the inclined wall 22D with the vehicle vertical direction as the plate thickness direction. In other words, the rear flange 22E protrudes rearward of the vehicle so that the angle formed with the inclined wall 22D is an obtuse angle when viewed in the vehicle width direction.

(Lower panel)
As shown in FIG. 1, the lower panel 24 has a bottom wall 24A, a front wall 24B, a front flange 24C, a rear wall 24D, and a rear flange 24E. Further, the bottom wall 24A, the front wall 24B, the front flange 24C, the rear wall 24D, and the rear flange 24E each extend in the vehicle width direction.

  The bottom wall 24A is formed in a rectangular shape with the vehicle longitudinal direction as the short direction and the vehicle width direction as the long direction when viewed in the vehicle vertical direction. The front wall 24B extends from the front end in the vehicle front-rear direction of the bottom wall 24A to the upper front side in the vehicle front-rear direction. The front flange 24C is a plate-like portion that protrudes forward from the upper end of the front wall 24B in the vehicle vertical direction with the vehicle vertical direction as the plate thickness direction. The length of the front flange 24C in the vehicle front-rear direction is substantially the same as the length of the front flange 22C in the vehicle front-rear direction. Furthermore, the front flange 22C is overlapped with the front flange 24C from the upper side in the vehicle vertical direction and joined by spot welding.

  The rear wall 24D extends from the rear end in the vehicle front-rear direction of the bottom wall 24A to the rear upper side in the vehicle front-rear direction. Further, the rear wall 24D has a vehicle vertical direction length that is longer than the vehicle vertical direction length of the front wall 24B when viewed in the vehicle longitudinal direction. The rear flange 24E is a plate-like portion that protrudes rearward from the upper end of the rear wall 24D in the vehicle vertical direction with the vehicle vertical direction as the plate thickness direction. Further, the length of the rear flange 24E in the vehicle front-rear direction is substantially the same as the length of the rear flange 22E in the vehicle front-rear direction.

[Panel structure]
Next, the panel structure 20 will be described.

  The panel structure 20 shown in FIG. 1 has the above-described upper panel 22 and floor pan 26.

<Floor bread>
As shown in FIGS. 1 and 2B, the floor pan 26 includes a plate-like main body portion 26A that extends in the vehicle front-rear direction and the vehicle width direction, and an extension that extends from the front end portion of the main body portion 26A in the vehicle front-rear direction. And a protruding portion 26B.

  The front end in the vehicle front-rear direction of the main body 26A is sandwiched and bonded between the rear flange 22E and the rear flange 24E in the vehicle vertical direction, and is joined to the rear flange 22E and the rear flange 24E by spot welding. Specifically, in the vehicle vertical direction, the upper surface of the front end portion of the main body portion 26A and the lower surface of the rear flange 22E are bonded by the adhesive 32, and the lower surface of the front end portion of the main body portion 26A and the rear flange 24E The upper surface is bonded by an adhesive 32. Furthermore, the main body portion 26A, the rear flange 22E, and the rear flange 24E are joined by spot welding at a plurality of positions spaced in the vehicle width direction.

  The extension portion 26B extends from the front end portion of the main body portion 26A in the vehicle front-rear direction to the front side in the vehicle front-rear direction and is inclined when viewed in the vehicle width direction. Here, an angle θ2 (acute angle) formed between the lower surface of the extending portion 26B in the vehicle vertical direction and the lower surface of the main body portion 26A in the vehicle vertical direction is defined as the inclination angle of the extending portion 26B. In the present embodiment, as an example, the angle θ2 is substantially the same as the angle θ1 of the inclined wall 22D. That is, the extending part 26B extends along the inclination direction K from the front end part of the main body part 26A. The angle θ1 and the angle θ2 are set so that the opening direction of a hollow portion 32A described later is upward from the horizontal direction when the vehicle 10 is placed in an electrodeposition tank (not shown).

  Further, the extension part 26B is disposed inside a closed cross section formed by the upper panel 22, the lower panel 24, and the main body part 26A when viewed in the vehicle width direction. Furthermore, the extending portion 26B is disposed to face the inclined wall 22D in a direction orthogonal to the inclined direction K when viewed in the vehicle width direction. In addition, the upper surface of the extending portion 26B is bonded (coupled) to the lower surface of the inclined wall 22D via the adhesive 32. In addition, the extension part 26B and the inclined wall 22D are not spot-welded. The adhesive 32 that joins the front end portion of the main body 26A and the rear flange 22E is connected to and integrated with the adhesive 32 that joins the extending portion 26B and the inclined wall 22D. The front end portion of the extending portion 26B in the vehicle front-rear direction is not in contact with the upper panel 22.

(welded part)
As shown in FIG. 2 (A), in this embodiment, a plurality of welded portions 34 (x mark portions shown in the figure) formed by spot welding the rear flange 22E, the front end portion of the main body portion 26A, and the rear flange 24E. ) Is set at an interval in the vehicle width direction of the rear flange 22E. At the periphery of each welded portion 34, the adhesive 32 is crushed by being pressurized by a pair of spot guns (not shown) during spot welding. Specifically, the adhesive 32 is provided between the rear flange 22E and the main body portion 26A around the welded portion 34, between the inclined wall 22D and the extension portion 26B, and between the main body portion 26A and the rear flange 24E. Thus, the width is wide in the direction orthogonal to the coupling direction.

  On the other hand, since the pressurization (pressing force) of a spot gun (not shown) does not act or the pressing force is low between the plurality of welds 34, the adhesive 32 is difficult to spread and is narrow. That is, the manner in which the adhesive 32 is crushed differs between the welded portion 34 where the applied pressure by spot welding is high and the portion other than the welded portion 34 where the applied pressure is low. For this reason, between the plurality of welded portions 34, a constricted depression 32 </ b> A and a constricted portion 32 </ b> B (a portion where the adhesive 32 does not reach the end portion) are formed in the adhesive 32. In addition, the site | part opened to the vehicle front-back direction front side is made into the hollow part 32A, and the site | part opened to the rear side is made into the hollow part 32B.

[Comparison]
Next, the proportional panel structure 200 will be described with reference to FIGS. 4 and 5A and 5B.

  In FIG. 4, a proportional panel structure 200 is shown. The panel structure 200 includes an upper panel 202 and a floor pan 204.

  The upper panel 202 has a top wall 202A, a front wall 202B, and a front flange 202C. The top wall 202A is formed in a rectangular shape with the vehicle longitudinal direction as the short direction and the vehicle width direction as the long direction when viewed in the vehicle vertical direction. Further, the top wall 202A has a vehicle front-rear direction rear end located slightly above the vehicle vertical direction as viewed in the vehicle width direction. The front wall 202B is a vertical wall that extends downward from the front end of the top wall 202A in the vehicle front-rear direction. The front flange 202C is a plate-like portion that protrudes forward from the vehicle vertical direction lower end portion of the front wall 202B with the vehicle vertical direction as the plate thickness direction. The upper panel 202 and the lower panel 206 constitute a floor cross member 210.

  The lower panel 206 has a bottom wall 206A, a front wall 206B, a front flange 206C, a rear wall 206D, and a rear flange 206E. 206 A of bottom walls are formed in the rectangular shape seeing a vehicle front-back direction as a transversal direction and a vehicle width direction as a longitudinal direction seeing in the vehicle up-down direction. The front wall 206B extends from the front end in the vehicle front-rear direction of the bottom wall 206A to the front front side in the vehicle front-rear direction. The front flange 206C protrudes forward from the upper end of the front wall 206B in the vehicle vertical direction with the vehicle vertical direction as the plate thickness direction. Further, a front flange 202C is overlapped with the front flange 206C from the upper side in the vehicle vertical direction and is joined by spot welding.

  The rear wall 206D extends upward from the rear end of the bottom wall 206A in the vehicle front-rear direction. The rear flange 206E protrudes rearward from the upper end of the rear wall 206D in the vehicle vertical direction with the vehicle vertical direction as the plate thickness direction. Further, the rear flange 206E is disposed to face the rear end portion in the vehicle front-rear direction of the top wall 202A along the inclination direction of the top wall 202A of the upper panel 202.

  The floor pan 204 is formed in a plate shape that extends in the vehicle front-rear direction and the vehicle width direction. Further, the front end portion of the floor pan 204 in the vehicle front-rear direction is sandwiched between the rear end portion of the top wall 202A in the vehicle front-rear direction and the rear flange 206E along the inclination direction of the top wall 202A of the upper panel 202. And the front-end part of the floor pan 204 is couple | bonded with the top wall 202A and the rear flange 206E by the adhesive agent 32 and spot welding.

  As shown in FIG. 5A, in the proportional panel structure 200, a plurality of welds 208 (not shown) formed by spot welding the top wall 202A, the front end of the floor pan 204, and the rear flange 206E. (X mark part) is set at intervals in the vehicle width direction. At the periphery of each welded portion 208, the adhesive 32 is crushed and widened by being pressed by a pair of spot guns (not shown) during spot welding.

  On the other hand, since the pressurization (pressing force) of a spot gun (not shown) does not act or is low between the plurality of welds 208, the adhesive 32 is difficult to spread and is narrow. As a result, a constricted depression 32 </ b> A and a constricted part 32 </ b> B are formed in the adhesive 32. In addition, the site | part opened to the vehicle front-back direction front side is made into the hollow part 32A, and the site | part opened to the rear side is made into the hollow part 32B.

  Here, in order to perform electrodeposition coating on a vehicle (not shown) having a proportional panel structure 200, it is assumed that the vehicle is placed in the electrodeposition tank from the front side. At this time, the floor pan 204 is disposed to be inclined downward in the front-rear direction of the vehicle. Accordingly, as shown in FIG. 5B, the opening direction of the recessed portion 32 </ b> A is obliquely downward with respect to the horizontal direction H as the horizontal direction H and the vertical direction V orthogonal to the horizontal direction H. For this reason, the movement of air (bubbles B) that is about to move upward around the recess 32A is restricted by the top wall 202A and the adhesive 32, and accumulates in the recess 32A. As described above, in the comparative panel structure 200, the bubbles B accumulate in the recess 32A (an air reservoir is formed), so that the paint does not spread to the joint portion between the upper panel 202 and the floor pan 204 during electrodeposition coating. there is a possibility.

<Action and effect>
Next, the operation and effect of the panel structure 20 of the present embodiment will be described.

  As shown in FIG. 3, in order to apply electrodeposition coating to the vehicle 10 having the panel structure 20, it is assumed that the vehicle 10 is placed in an electrodeposition tank (not shown) from the front side. At this time, the main body portion 26A of the floor pan 26 is disposed so as to be inclined downward in the front and rear direction of the vehicle.

  On the other hand, the extension part 26B of the floor pan 26 is inclined upward in the front-rear direction of the vehicle from the front end part of the main body part 26A when viewed in the vehicle width direction. For this reason, the extension part 26B is located above the vehicle front-rear direction front end of the main body part 26A. That is, as the horizontal direction H and the vertical direction V, the opening direction of the recessed portion 32 </ b> A is obliquely upward with respect to the horizontal direction H. For this reason, the air (bubble B) around the depression 32A moves obliquely upward with respect to the horizontal direction without accumulating in the depression 32A.

  Since the bubble B that has moved obliquely upward from the recess 32A is prevented from contacting the adhesive 32, movement in the vehicle width direction is less likely to be restricted. For this reason, the air bubbles B move to the outside of the upper panel 22 by inclining the upper panel 22 obliquely with respect to the vehicle width direction (changing the left and right heights) inside the electrodeposition tank.

  Thus, in the panel structure 20 of this embodiment, it is suppressed that the bubble B which exists in the hollow part 32A moves diagonally upward, and an air pocket is formed in the hollow part 32A. For this reason, the coating material can be spread over the joint portion (particularly, the periphery of the recessed portion 32A) between the upper panel 22 and the floor pan 26 at the time of electrodeposition coating. In addition, about the hollow part 32B, since it is opening diagonally upward with respect to the horizontal direction, it is suppressed that an air pocket is formed and a coating material can be spread.

  The present invention is not limited to the above embodiment.

  In order to suppress air accumulation at the joint portion between the floor pan 26 and the lower panel 24, an extension portion extending along the extension portion 26B of the floor pan 26 is formed from the front end portion of the rear flange 24E in the vehicle front-rear direction. do it. Thereby, since the hollow part 32A of the adhesive agent 32 is obliquely upward with respect to the horizontal direction H, the bubbles B are moved obliquely upward, and the formation of air pockets in the hollow part 32A is suppressed. Then, the paint can be spread over the joint portion between the floor pan 26 and the lower panel 24.

  In the panel structure 20, the floor cross member 12 may be disposed on the rear side in the vehicle front-rear direction, and the floor pan 26 may be disposed on the front side in the vehicle front-rear direction. In this case, the vehicle 10 may be put into the electrodeposition tank from the rear side.

  As described above, the vehicle front structure according to the embodiment and the modified example of the present invention has been described. However, the embodiment and the modified example may be appropriately combined and used without departing from the gist of the present invention. Of course, it can be implemented in any manner.

10 vehicle 20 panel structure (an example of a vehicle panel structure)
22 Upper panel (example of first panel)
22D inclined wall (an example of an inclined part)
22E Rear flange (an example of a flange)
26 Floor pan (example of second panel)
26A body part 26B extension part

Claims (1)

A first panel having an inclined portion that is inclined along an intersecting direction that intersects with the vehicle vertical direction, and a flange that projects from the vehicle vertical direction lower end of the inclined portion in the vehicle longitudinal direction;
A main body portion bonded to the lower surface of the flange in the vehicle vertical direction by bonding and spot welding with an adhesive, and extending from the vehicle front-rear direction one end portion of the main body portion along the intersecting direction through the adhesive. A second panel having an extension portion coupled to the inclined portion;
A vehicle panel structure comprising:

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