JP2015157594A - Vehicle body structure of automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure the rigidity of a door opening part while suppressing an increase of part items and weight to the minimum when joining a resin-made side outer panel to a frame of a vehicle body side part of an automobile.SOLUTION: A resin-made side outer panel 13 joined to a roof side rail 15 integrally comprises a panel main body part 13b, an extension part 13f protruding from an end part of the panel main body part 13b, and a vehicle body fastening part 13g arranged at a tip of the extension part 13f. Since the vehicle body fastening part 13g is fastened to the roof side rail 15 in a state in which the extension part 13f is folded and made to adhere W4, W5 to an internal face of the panel main body part 13b, the rigidity of an end part of the panel main body part 13b is enhanced by the extension part 13f and the vehicle body fastening part 13g, and not only the support rigidity of the side outer panel 13 with respect to the roof side rail 15 is improved, but also it becomes possible to eliminate a special bracket for joining the side outer panel 13 to the roof side rail 15, and to reduce its size since the extension part 13f and the vehicle body fastening part 13g function as brackets.

Description

  The present invention relates to an automobile body structure in which a resin side outer panel is joined to a vehicle body side frame.

  A pipe member having a closed cross-section is three-dimensionally bent to constitute a frame member in which the A pillar and the roof side rail are integrally continuous, and the frame member supports a side outer panel made of a steel plate via a bracket. This is known from US Pat.

JP 2013-6519 A

  In this way, if the side outer panel is supported on the frame member via the bracket, the distance between the frame member and the side outer panel can be arbitrarily adjusted by changing the dimensions of the bracket. The degree of freedom of the shape of the side outer panel can be increased without being constrained by.

  However, if a large number of brackets are placed between the frame member and the side outer panel, there is a problem that the parts and weight increase accordingly, especially when the side outer panel is made of a synthetic resin whose rigidity is lower than that of the steel plate. Since there is a need to reinforce the door opening of the side outer panel, there is a possibility that the advantage of weight reduction by making the side outer panel made of synthetic resin cannot be fully utilized.

  The present invention has been made in view of the above-described circumstances. When joining a resin side outer panel to a vehicle body side frame, the rigidity of the door opening is minimized while minimizing the increase in the number of parts and weight. It aims at securing.

  In order to achieve the above object, according to the first aspect of the present invention, there is provided a vehicle body structure in which a resin side outer panel is joined to a vehicle body side frame, wherein the side outer panel is a panel body. Part, an extension projecting from the end of the panel body, and a vehicle body fastening part provided at the tip of the extension, and the extension is bent and joined to the inner surface of the panel body A vehicle body structure is proposed in which the vehicle body fastening portion is fastened to the vehicle body side frame in a state.

  According to a second aspect of the present invention, in addition to the structure of the first aspect, the vehicle body fastening portion is formed in a hollow closed cross section and is joined to the inner surface of the panel main body portion. A vehicle body structure is proposed.

  According to a third aspect of the present invention, in addition to the structure of the first or second aspect, the joint is an adhesive joint, a melt joint, or a mechanical joint. Is proposed.

  According to the invention described in claim 4, in addition to the configuration of any one of claims 1 to 3, the extension portion protrudes from the door opening portion of the panel main body portion, is bent, and is A vehicle body structure is proposed in which the portion joined to the panel main body portion in a two-ply manner constitutes a flange that fixes a door seal to the door opening.

  According to the invention described in claim 5, in addition to the structure of any one of claims 1 to 4, the vehicle body fastening portion is fastened to the lower end of the roof side rail of the vehicle body side frame. The upper end of the panel body covering the outer side in the vehicle width direction of the roof side rail is overlapped and joined to the upper surface of the outer end in the vehicle width direction of the roof panel joined to the upper part of the roof side rail. A featured vehicle body structure is proposed.

  According to the configuration of the first aspect, the resin side outer panel joined to the vehicle body side frame is provided at the panel main body, the extension projecting from the end of the panel main body, and the tip of the extension. The body fastening part is fastened to the vehicle body side frame with the extension part bent and joined to the inner surface of the panel body part, so that the rigidity of the end of the panel body part is the extension part. In addition to improving the support rigidity of the side outer panel with respect to the vehicle body side frame by being enhanced by the vehicle body fastening portion, the extension portion and the vehicle body fastening portion serve as a bracket, thereby making the side outer panel a vehicle body side frame. Special brackets for joining can be eliminated or miniaturized.

  According to the second aspect of the present invention, since the vehicle body fastening portion has a hollow closed cross section and is joined to the inner surface of the panel main body portion, the rigidity of the vehicle body fastening portion originally having high rigidity due to the hollow closed cross section is the panel. By being further increased by being joined to the inner surface of the main body, the support rigidity of the side outer panel with respect to the vehicle body side frame is further improved.

  According to the third aspect of the present invention, since the bonding is adhesive bonding, fusion bonding, or mechanical bonding, the extension portion with respect to the panel main body portion and the vehicle body fastening portion can be firmly bonded.

  According to a fourth aspect of the present invention, the extension portion protrudes from the door opening portion of the panel main body portion, and the portion that is bent and joined to the panel main body portion by overlapping two sheets has a flange that fixes the door seal to the door opening portion. Since it comprises, it becomes unnecessary to provide the special flange for fixing a door seal, and a number of parts is reduced.

  According to the fifth aspect of the present invention, the vehicle body fastening portion is fastened to the lower end of the roof side rail of the vehicle body side frame, and the upper end of the panel body that covers the outside of the roof side rail in the vehicle width direction is the upper portion of the roof side rail. The roof panel joined to the upper surface of the outer edge in the vehicle width direction is overlapped and joined, so it is not necessary to remove the roof panel from the roof side rail when removing and replacing the damaged side outer panel. Time and cost can be reduced.

The side view of the vehicle body side part structure of a motor vehicle. (First embodiment) FIG. 2 is an enlarged sectional view taken along line 2-2 in FIG. 1. (First embodiment) FIG. 3 is a three-direction arrow view of FIG. 2. (First embodiment) FIG. 4 is an enlarged sectional view taken along line 4-4 of FIG. (First embodiment) FIG. 5 is an enlarged sectional view taken along line 5-5 in FIG. (First embodiment) The figure corresponding to FIG. (Second Embodiment)

First embodiment

  Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. In the present specification, the front-rear direction, the left-right direction (vehicle width direction), and the up-down direction are defined with reference to an occupant seated in the driver's seat.

  As shown in FIG. 1, a vehicle body side structure 11 of a five-door vehicle includes a vehicle body side frame 12 positioned on the inner side in the vehicle width direction, and a side made of synthetic resin that covers the vehicle width direction outer side of the vehicle body side frame 12. It consists of an outer panel 13. The side outer panel 13 is formed with door openings 13a and 13a into which the front door and the rear door are fitted.

  The vehicle body side frame 12 includes an A pillar upper 14 and a roof side rail 15 that are integrally connected and extend in the front-rear direction, a side sill 16 and a rear side frame 17 that are integrally connected and extend in the front-rear direction, and the A pillar upper 14 and the side sill. A pillar lower 18 that connects 16 in the vertical direction, B pillar 19 that connects the roof side rail 15 and the side sill 16 in the vertical direction, and C pillar 20 and D pillar that connect the roof side rail 15 and the rear side frame 17 in the vertical direction. 21 etc.

  As shown in FIG. 2, the roof side rail 15 facing the upper side of the door opening 13a of the side outer panel 13 made of synthetic resin is formed by roll forming a steel plate in a closed cross section, and an upper joining flange 15a and a lower joining flange. 15 b is overlapped in the vertical direction and joined by welding W <b> 1, and the outer side in the vehicle width direction is covered with the panel body portion 13 b of the side outer panel 13. A joining flange 13d, in which the upper end of the panel body 13b is folded downward and the lower end of the stepped part 13c is folded inward in the vehicle width direction, is superimposed on the upper surface of the joining flange 15a on the upper side of the roof side rail 15 and bonded. Joined by G1. A joining flange 22b in which a lower end of a step portion 22a obtained by bending the outer end in the vehicle width direction of the roof panel 22 downward is overlapped with an upper surface of the joining flange 13d of the side outer panel 13 in the vertical direction. Joined by the adhesive G2. And the inner surface of the panel main-body part 13b of the side outer panel 13 is joined to the flat part 15c of the roof side rail 15 by adhesion | attachment G3.

  As shown in FIGS. 2 and 3, a strip-shaped extension 13f is projected from the door opening 13a of the side outer panel 13 through a thin hinge 13e, and a triangular closed cross section at the tip of the extension 13f. The vehicle body fastening portion 13g having the above is integrally formed. The vehicle body fastening portion 13g having a closed cross section is molded by using a slide mold when the synthetic resin side outer panel 13 is molded. The extension portion 13f is folded back in the vehicle width direction at the hinge portion 13e, overlapped with the inner surface of the door opening portion 13a and joined by the adhesive G4, and the vehicle body fastening portion 13g is overlapped with the inner surface of the panel main body portion 13b to be bonded G5. Are joined together. Then, the vehicle body fastening portion 13g of the side outer panel 13 is fastened to the lower end of the stay 23 whose upper end is welded W2 to the lower portion of the roof side rail 15 through the tapping screw 24 from the inner side in the vehicle width direction.

  As shown in FIG. 4, the door opening 13a of the front door that continues to the front end of the panel main body 13b of the side outer panel 13 that covers the outer surface of the B pillar 19 in the vehicle width direction is also an extension 13f having the same structure as described above. And the vehicle body fastening portion 13g, the extension portion 13f is bonded to the door opening portion 13a G4, and the vehicle body fastening portion 13g is bonded to the inner surface of the panel main body portion 13b. It is fastened to a stay 23 welded to the front surface of 19 via a tapping screw 24. On the rear surface of the B pillar 19, an extension portion 13f and a vehicle body fastening portion 13g provided in a door opening portion 13a of the rear door continuous with the rear end of the panel main body portion 13b are fastened through a tapping screw 24 in the same manner.

  In this way, the door opening 13 a of the front door of the side outer panel 13 is joined to the rear edge of the A pillar lower 18, the lower edge of the roof side rail 15, and the front edge of the B pillar 19, and the side outer panel 13. The door opening 13a of the rear door is joined at two locations on the rear edge of the B pillar 19, the lower edge of the roof side rail 15, and the front edge of the C pillar 20 (see FIG. 1). At this time, the portion where the door opening portion 13a and the extension portion 13f are bonded in a stacked manner constitutes a flange 26 for attaching the door seal 25 (see FIGS. 2 and 4).

  As shown in FIG. 5, the side sill 16 is hollow by overlapping the upper and lower joining flanges 27a and 27b of the side sill outer 27 and the upper and lower joining flanges 28a and 28b of the side sill inner 28 and joining them by welding W4 and W5. Constructed in a closed section. The panel body 13b of the side outer panel 13 that covers the outer side in the vehicle width direction of the side sill 16 overlaps the upper and lower joining flanges 13h and 13i with the outer side in the vehicle width direction of the upper and lower joining flanges 27a and 27b of the side sill outer 27, Joined by adhesion G6, G7.

  Next, the operation of the first embodiment of the present invention having the above configuration will be described.

  Since the synthetic resin side outer panel 13 has lower rigidity than a general steel plate side outer panel, there is a problem that particularly the rigidity of the door opening 13a is lowered and the sealing performance of the door seal becomes insufficient. However, according to the present embodiment, the extension portion 13f and the vehicle body fastening portion 13g are integrally projected from the door opening portion 13a of the side outer panel 13 via the hinge portion 13e, and bent at the hinge portion 13e. Since the vehicle body fastening portion 13g is fastened to the vehicle body side frame 12 with the tapping screw 24 in a state where the vehicle body fastening portion 13g is adhered to the inner surfaces of the door opening 13a and the panel main body portion 13b, respectively, the side outer panel 13 is secured. The rigidity of the door opening portion 13a is increased by the extension portion 13f and the vehicle body fastening portion 13g, so that the support rigidity of the side outer panel 13 with respect to the vehicle body side frame 12 is improved, and the extension portion 13f and the vehicle body fastening portion 13g are bracketed. The side outer panel 13 can be Can or miniaturized or eliminated special bracket for joining the over arm 12.

  Further, since the vehicle body fastening portion 13g has a hollow closed cross section and is bonded G5 to the inner surface of the panel main body portion 13b, the rigidity of the vehicle body fastening portion 13g originally having a high rigidity is the inner surface of the panel main body portion 13b. By further bonding to G5, the support rigidity of the side outer panel 13 with respect to the vehicle body side frame 12 is further improved. Moreover, since the distance between the vehicle body side frame 12 and the side outer panel 13 can be set arbitrarily by simply changing the size of the vehicle body fastening portion 13g, the vehicle body side frame 12 is not restricted by the shape. The degree of freedom in selecting the shape of the side outer panel 13 is increased.

  Further, the portion where the extension portion 13f of the side outer panel 13 is adhered to the door opening portion 13a in a stacked manner W4 constitutes a flange 26 for fixing the door seal 25 to the door opening portion 13a, so that the door seal 25 is fixed. It is not necessary to provide a special flange, and the number of parts is reduced.

Second embodiment

  Next, a second embodiment of the present invention will be described with reference to FIG.

  In the first embodiment, the bonding flange 13d of the side outer panel 13 is bonded G1 to the upper surface of the bonding flange 15a of the roof side rail 15, and the bonding flange 22b of the roof panel 22 is bonded G2 to the upper surface of the bonding flange 13d. However, in the second embodiment, the joining flange 22b of the roof panel 22 is bonded G1 to the upper surface of the joining flange 15a of the roof side rail 15, and the joining flange 13d of the side outer panel 13 is attached to the upper surface of the joining flange 22b. G2 is adhered.

  When the side outer panel 13 damaged due to a side collision of the vehicle is replaced for repair, in the second embodiment, the side outer panel 13 is overlaid on the outer side of the roof panel 22, so that the roof panel 22 is not peeled off. The side outer panel 13 can be replaced, and the time and cost required for repair can be reduced.

  The embodiments of the present invention have been described above, but various design changes can be made without departing from the scope of the present invention.

  For example, in the embodiment, the extension portion 13f is bonded to the door opening portion 13a G4, and the vehicle body fastening portion 13g is bonded to the panel body portion 13b. However, instead of bonding, welding is used, rivets, bolts, etc. It is possible to adopt the mechanical joining.

  The vehicle to which the present invention is applied is not limited to the five-door vehicle of the embodiment, and may be any vehicle such as a four-door vehicle, a three-door vehicle, and a two-door vehicle.

12 Car body side frame 13 Side outer panel 13a Door opening part 13b Panel body part 13f Extension part 13g Car body fastening part 15 Roof side rail 22 Roof panel 25 Door seal 26 Flange

Claims (5)

A vehicle body structure for joining a resin side outer panel (13) to a vehicle body side frame (12),
The side outer panel (13) includes a panel body (13b), an extension (13f) protruding from an end of the panel body (13b), and a vehicle body provided at a tip of the extension (13f). The vehicle body fastening portion (13g) is integrally provided with a fastening portion (13g), and the extension portion (13f) is bent and joined to the inner surface of the panel main body portion (13b). A vehicle body structure that is fastened to a vehicle body.   The vehicle body structure according to claim 1, wherein the vehicle body fastening portion (13g) has a hollow closed cross section and is joined to an inner surface of the panel main body portion (13b).   The vehicle body structure according to claim 1, wherein the bonding is adhesive bonding, fusion bonding, or mechanical bonding.   The extension (13f) protrudes from the door opening (13a) of the panel body (13b) and is bent and joined to the panel body (13b) by overlapping the door opening (13f). The vehicle body structure according to any one of claims 1 to 3, wherein a flange (26) for fixing the door seal (25) to 13a) is formed.   The vehicle body fastening portion (13g) is fastened to the lower end of the roof side rail (15) of the vehicle body side frame (12), and the panel body portion (13b) covering the outside in the vehicle width direction of the roof side rail (15). The upper end of the roof is overlapped and joined to the upper surface of the outer end in the vehicle width direction of the roof panel (22) joined to the top of the roof side rail (15). 5. The vehicle body structure according to any one of 4 above.

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