JP2006213262A - Car body bonding structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To adequately prevent an adhesive from protruding from the external edge of a flange while suppressing the generation of smoke or bad smells accompanying the burning of the adhesive by welding. <P>SOLUTION: One cabin side flange 3 has a swelling section 12 being away from the other cabin side flange 2 facing the cabin side flange 3 at a section being pinched by two adjacent welding sections 10 and 10. By the swelling section 12, a gap 13 between the flange 3 and the other flange 2 is formed. A pair of end contour lines 12b which extends in the cross direction of the flange 3 from both ends of a central contour line 12a which extends in the longitudinal direction of the swelling section 12 to the internal edge 3a of the flange 3 tilt in directions separating from each other to the internal edge 3a of the flange 3. The adhesive 11 is applied to the swelling section 12 of the first flange 3 or a corresponding section of a second flange 4. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to joining of panel members constituting a vehicle body, and more particularly to a vehicle body joining structure using a combination of an adhesive and welding for joining panel members.

  Welding is generally used to join panel members constituting the vehicle body. For example, a pillar constituting a door opening generally has a closed cross-sectional structure, and is made by joining flanges of an inner pillar member and an outer pillar member by spot welding. And the sealing performance between doors is achieved by the sealing member fitted to the flange of the pillar.

  As another method for joining panels together, a joining method using welding and an adhesive in combination is known. In this joining method, spot welding is performed after an adhesive is applied to the joining surface of one panel member and then the joining surface of the other panel member is overlapped.

  However, such a method has a problem that the adhesive protrudes from the outer edge of the panel member. If the adhesive leaked from the outer edge of the panel member is, for example, a pillar, the seal member cannot be fitted to the pillar as designed due to the presence of the adhesive that has leaked outside from the joint flange of the pillar and solidified. For this reason, problems such as deterioration in sealing performance occur. In addition, since the welding is performed in a state where the adhesive is interposed between the panels at the site of spot welding, the adhesive is burnt by the spot welding, so that smoke and odor are generated and the working environment is deteriorated. ing.

In order to solve this problem in the joining method using both welding and an adhesive, Patent Document 1 forms a plurality of convex portions spaced from each other on the joint surface of one panel, and the bottom of this convex portion is formed. It has been proposed that a gap is formed at a portion other than the convex portion by being brought into contact with the joint surface of the other panel so as to be separated from the joint surface of the other panel member. According to this, in the convex part to which spot welding is performed, when the panel members are brought into contact with each other, the adhesive can spread at a gap portion between the panel members, so that the adhesive is spread from the outer edge of the panel member. There is an advantage that the protrusion of can be reduced.
Japanese Utility Model Publication No. 02-0559880

  According to the proposal of Patent Document 1, although the possibility of the adhesive protruding from the side edge of the panel can be reduced by providing a gap between the panels, for example, if the position where the adhesive is applied is shifted, the side edge of the panel The possibility of the adhesive sticking out cannot be denied. Moreover, since the adhesive is interposed in the welded portion (bottom of the convex portion) according to the proposal of Patent Document 1, the problem that the adhesive is burnt by welding and deteriorates the working environment such as smoke is still unsolved. .

  By the way, the protrusion of the adhesive from the panel member is particularly problematic as the adhesive protrudes from the outer edge of the panel member. This is particularly true when the flanges are joined together. That is, the adhesive that protrudes from the inner edge of the flange is located on the inside of the panel member and is not exposed to the outside, so there is almost no harm, but the adhesive that protrudes from the outer edge of the flange is solidified in a state of being exposed to the outside. Therefore, there is a problem in terms of fitting and appearance of the sealing member described above.

  The present invention has been made in view of this point. The purpose of the present invention is to prevent the generation of smoke and bad odor caused by the burning of the adhesive by welding when the flanges are joined together by using adhesive and welding together. An object of the present invention is to provide a vehicle body joint structure capable of accurately preventing the adhesive from protruding from the outer edge of the flange while suppressing it.

According to the present invention, such a technical problem is
A vehicle body joint structure for joining the vehicle compartment side flange of the vehicle compartment side vehicle body panel member using an adhesive and welding together,
At least one flange of the passenger compartment side flange is spaced apart in the longitudinal direction and intermittently raised, and an adhesive part for placing the adhesive and the passenger compartment flange sandwiched between the adhesive part are in contact with each other A welding site,
The adhesion portion is achieved by providing a vehicle body joining structure characterized in that a gap that is closed with respect to the outer edge of the flange and opened with respect to the inner edge is formed by the protrusion.

  That is, according to the present invention, since the gap in which the adhesive spreads is closed with respect to the outer edge of the flange, it is possible to prevent the adhesive from protruding from the outer edge of the flange. Moreover, since the adhesion part which forms a clearance gap between vehicle interior side flanges is arrange | positioned between the welding parts which a flange mutually contacts, in a welding part, it can weld without an adhesive intervening, Therefore, it is possible to prevent the generation of malodor and smoke associated with welding, which has been a problem in the past.

  In a preferred embodiment of the present invention, the adhesion part is offset to the inner edge side in the width direction of the casing side flange with respect to the welding part, and this makes it difficult to avoid by the spot welding alone. The opening phenomenon in which the inner edge portions of the flange tend to be separated from each other can be effectively prevented by the adhesive.

  Further, in a preferred embodiment of the present invention, the ridge forming the adhesion site extends in the center portion in the longitudinal direction at the center portion in the width direction of the flange, and extends from both ends of the center step portion toward the inner edge of the flange. A configuration is adopted in which the pair of end step portions are widened toward the inner edge of the flange.

  By adopting this configuration, it is possible not only to prevent the adhesive overflowing from the gap from protruding from the inner edge of the flange, but also to prevent the adhesive from overflowing from the outer edge of the flange. In this case, the area to be joined with the adhesive can be enlarged, so that the opening phenomenon described above can be effectively suppressed, and thereby the rigidity of the vehicle body, particularly the torsional rigidity can be improved. Therefore, the rigidity of the vehicle body can be effectively improved by applying the joining method of the present invention to the corner portion of the opening that is widely opened, such as the door opening of the vehicle body.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 shows an example in which the joining structure of the embodiment is applied to the flanges 2 and 3 of the side sill 1, and FIG. 1 is a cross-sectional view taken along the line II of FIG. For example, as shown in FIG. 2, the joint structure of the embodiment is preferably applied to corner portions 4a and 4b of the side door opening 4 of the vehicle body and corner portions of the back door opening not shown. As will be understood from the following explanation, by applying a joint structure using a combination of an adhesive and welding to the corner portion of the opening of the vehicle body such as the side door opening 4, it is compared with the case where this is joined by spot welding alone. Thus, since the phenomenon in which the flanges 2 and 3 open and the vehicle body rigidity is lowered can be suppressed, the vehicle body rigidity, particularly the vehicle body torsional rigidity can be improved.

  In FIG. 1, reference numeral 5 indicates a side door, and 6 indicates a floor panel. The side sill 1 has a closed cross section 9 formed by joining two panel members 7 and 8 on the passenger compartment side.

  The first panel member 7 is formed with the vehicle compartment side flange 2 and the vehicle outer side flange 7a, and the second panel member 8 is provided with the vehicle compartment side flange 3 and the vehicle outer side flange 7a. 8a is formed, and the joining structure of the embodiment is applied to the joining to the flanges 2 and 3 on the passenger compartment side, and spot welding is applied to the joining to the flanges 7a and 8a on the outside of the vehicle as in the prior art. However, the present invention is not limited to this, and the joining structure of the embodiment may be applied to the joining of the second flanges 7a and 8a outside the vehicle.

  3 and 4 show the cabin side flanges 2 and 3 to which the joining structure of the embodiment is applied, FIG. 3 is a partial perspective view, and FIG. 4 is a plan view of the flange portion from above. FIG.

  With reference to FIGS. 3 and 4, the passenger compartment side flanges 2 and 3 are spot welded to the portions where the welded portions 10 spaced apart in the longitudinal direction, that is, the passenger compartment side flanges 2 and 3 contact each other, Adjacent welds 10 and 10 are joined by an adhesive 11. In other words, the adhesive 11 is intermittently applied along the longitudinal direction of the passenger compartment side flanges 2 and 3 and spot-welded in a region between the adjacent adhesives 11 and 11. Here, the adhesive 11 is made of a thermosetting resin as in the prior art, and more specifically, an adhesive mainly composed of an epoxy resin.

  One casing-side flange 3 has a raised portion 12 that is spaced from the opposite other casing-side flange 2 at a portion sandwiched between two adjacent welded portions 10, 10. A gap 13 is formed between the other casing side flange 2 (FIGS. 1 and 5). As can be seen from FIGS. 1 and 5, the gap 13 is opened toward the inside of the side sill 1. In other words, the raised portion 12 has a hat-like contour shape in which both ends are in contact with the inner edge 3 a of the flange 3 between the adjacent welded portions 10 and 10. More specifically, the raised portion 12 includes a central contour line extending in the longitudinal direction at the central portion in the width direction of the flange 3, that is, a central step portion 12a, and a transverse direction of the flange 3 from both ends of the central contour line 12a toward the inner edge 3a. And a pair of end contour lines, that is, end step portions 12b.

  The pair of end contour lines (end step portions) 12b are arranged so as to be inclined away from each other toward the inner edge 3a from the central portion of the flange 3 in the width direction. The pair of end contour lines 12b and 12b may be constituted by straight lines, or may be curved in a direction away from each other or in a direction approaching. The center contour line (center step portion) 12a may be disposed at a position close to the outer edge 3b of the flange 3, but is preferably positioned substantially at the center in the width direction of the flange 3.

  In order to join the passenger compartment side flanges 2 and 3, first, the adhesive 11 is applied to the raised portions 12 of the one flange 3 that are intermittently disposed or the opposing portions of the other flange 2. Next, spot welding is performed on the welded portion 10 in a state where these two casing side flanges 2 and 3 are overlapped. When the casing side flanges 2 and 3 are overlapped, the adhesive 11 applied to the raised portion 12 spreads in the gap 13 and fills the gap 13. However, the central step portion 12a of the raised portion 12 It becomes a central dam and can prevent the adhesive agent 11 from protruding outside from the outer edges of the flanges 2 and 3. Moreover, it can prevent that the edge step part 12b becomes an end dam and the adhesive agent 11 protrudes into the welding part 10. FIG. And since the protruding part 12 is open | released toward the inside of the side sill 1, the adhesive agent 11 which filled the clearance gap 13 overflows from the flange inner edge 3a, and the dam of said center step part 12a or end step part 12b is carried out. The effect can be ensured.

  The dam effect is effective by providing the central step 12a at the center portion in the width direction of the flange 3 and applying the adhesive 11 in a state of being displaced toward the inner edge side of the flanges 2 and 3. That is, in the joining structure of the embodiment, as can be understood well from FIG. 4, the arrangement position of the spot welding portion 10 and the adhesive 11 is offset in a staggered manner in the width direction of the flanges 2 and 3 when viewed in plan. The adhesive 11 is applied in a state of being relatively displaced toward the inner side of the side sill 1. In addition, since the pair of end step portions 12b of the raised portion 12 are arranged so as to expand toward the inside of the side sill 1, when the adhesive 11 overflows from the gap 13, it faces toward the inside of the side sill 1. Can be allowed to flow out, thereby not only making the above-mentioned dam effect more certain, but also increasing the area joined by the adhesive at the sites along the inner edges of the flanges 2 and 3 can do. Further, since the adhesive 11 is offset to the inner edge side of the flanges 2 and 3, the opening phenomenon of the flanges 2 and 3, which is difficult to avoid by spot welding alone, that is, the inner edge portions of the flanges 2 and 3 tend to be separated from each other. This phenomenon can be prevented by the adhesive 11.

  In addition, as can be seen from FIG. 2, the raised portion 12 described above is formed on the flange 8 of the panel member 8 located on the vehicle interior side, but instead of this, it is formed on the flange 2 of the panel member 7 located on the vehicle exterior side. The raised portions 12 may be formed, or the raised portions 12 may be formed at portions corresponding to each other of both flanges 2 and 3.

  As can be seen from the above description, according to the joining structure of the embodiment, since the adhesive 11 is not interposed in the welded portion 10 of the casing side flanges 2 and 3, the adhesive burns during welding. Therefore, it is possible to prevent the generation of smoke and odor. Further, since the adhesive 11 can be prevented from protruding from the outer edges of the vehicle interior side flanges 2 and 3, the vehicle interior side flange 2 joined together with the solidified adhesive 11 leaking to the outside, For example, when a seal member is fitted to 3, it is possible to prevent the occurrence of a seal failure due to the mounting failure of the seal member.

  In the preferred embodiment of the present invention described above, the end contour line 12b of the raised portion 12 provided at a distance in the longitudinal direction of the flange 3 is in contact with the inner edge 3a of the flange 3. The end contours 12b of the raised ridges 12 are connected to each other by an additional contour line extending in the longitudinal direction so that the plurality of ridges 12 provided in the longitudinal direction of the flange 3 are connected to each other in a pulsed manner. Good.

It is sectional drawing along the II line | wire of FIG. It is a figure for demonstrating the site | part to which the joining structure of an Example is applied suitably. It is the fragmentary sectional perspective view for showing the example which applied the joining structure of an example to the compartment side flange of the side sill of closed section structure, and explaining the joining structure of an example. It is the figure which planarly viewed the flange of FIG. It is sectional drawing along the VV line of FIG. It is sectional drawing along the VI-VI line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Side sill 2 Cabin side flange 3 Cabin side flange 7 1st panel member 8 2nd panel member 9 Closed cross section 10 Welding part 11 Adhesive 12 Raised part 12a Central outline of raised part (central step part)
12b End contour line of protruding part (end step part)
13 Clearance

Claims (5)

A vehicle body joint structure for joining the vehicle compartment side flange of the vehicle compartment side vehicle body panel member using an adhesive and welding together,
At least one flange of the passenger compartment side flange is spaced apart in the longitudinal direction and intermittently raised, and an adhesive part for placing the adhesive and the passenger compartment flange between the adhesive part abut each other. A welding site,
The vehicle body joint structure according to claim 1, wherein a gap that is closed with respect to the outer edge of the flange and open with respect to the inner edge is formed by the bulge.   The vehicle body joint structure according to claim 1, wherein the adhesion portion is offset to the inner edge side in the width direction of the casing-side flange with respect to the welding portion.   The vehicle body joint structure according to claim 2, wherein the adhesion part and the welding part are arranged in a staggered manner in a longitudinal direction of the flange when the flange is viewed in plan.   The ridges forming the adhesion site include a central step portion extending in the longitudinal direction at a central portion in the width direction of the flange, and a pair of end step portions extending from both ends of the central step portion toward the inner edge of the flange. The vehicle body joint structure according to claim 3, wherein the pair of end step portions expands toward the inner edge of the flange.   The vehicle body joint structure according to any one of claims 1 to 4, wherein the passenger compartment side flange constitutes a corner portion of the vehicle body opening.

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