JP4888702B2 - Reinforcement structure at the top of the vehicle's rear pillar - Google Patents

Description

  The present invention relates to a reinforcing structure for an upper part of a rear pillar of a vehicle, in which an upper part of a rear pillar composed of a side body outer panel and a quarter inner panel is reinforced by reinforcement.

  The vehicle is equipped with a seat belt as part of safety measures, but the rear seat belt for the rear seat is held by a seat belt anchor fixed to the upper part of the rear pillar. The anchor of the seat belt is fixed to the upper part of the rear pillar by an anchor bolt.

  Thus, since the anchor bolt which receives a big load is fixed to the upper part of a rear pillar, high intensity | strength and rigidity are requested | required of the part. Thus, for example, Patent Document 1 proposes a reinforcing structure for the upper part of the rear pillar as shown in FIGS. 8 and 9.

8 is a partial perspective view showing the rear pillar portion of the vehicle with the side body outer panel removed, and FIG. 9 is a cross-sectional view taken along line FF of FIG. 8. As shown in FIG. 9, the side body outer panel 105 and the quarter are shown. A reinforcement (anchor reinforcing member) 108 is arranged inside the rear pillar 104 formed into a hollow cross-sectional shape with the inner panel 106,
The reinforcement 108 is overlapped with the quarter inner panel 106, and the anchor bolt 112 is fastened to the welding nut 111 welded to the inner surface (the anti-overlap surface), and the overlapping portion of the quarter inner panel 106 and the reinforcement 108 is tightened together. The structure which couple | bonds by is employ | adopted.
Japanese Patent Laid-Open No. 9-216546

  However, in the reinforcement structure shown in FIG. 8 and FIG. 9 disclosed in Patent Document 1, the reinforcement 108 is disposed inside the rear pillar 104 and the attachment position of the anchor bolt 112 is only partially reinforced. In order to increase the support rigidity of the anchor bolt 112, it is necessary to enlarge the reinforcement 108, and it is necessary to increase the rigidity of the rear pillar 104 itself.

  In addition, since the entire reinforcement 108 is disposed inside the rear pillar 104, it is necessary to form a work hole for inserting a welding gun in the quarter inner panel 106, and in addition, a superposition capable of spot welding is possible. There is a problem that the number of parts needs to be considered, and the shape of the parts and the welding thereof are complicated.

  Therefore, an object of the present invention is to provide a reinforcing structure for an upper part of a rear pillar of a vehicle that can increase the rigidity of the upper part of the rear pillar without causing complicated welding of the rear pillar.

  Another object of the present invention is to provide a reinforcing structure for the upper part of the rear pillar of the vehicle that can increase the support rigidity of the anchor bolt on the upper part of the rear pillar.

In order to achieve the above object, the invention according to claim 1 is a reinforcing structure for an upper part of a rear pillar of a vehicle in which an upper part of a rear pillar composed of a side body outer panel and a quarter inner panel is reinforced by reinforcement.
A notch is formed in the upper part of the quarter inner panel on the rear side of the vehicle body, and the periphery of the notch is joined to the reinforcement, and a part of the reinforcement protrudes from the notch of the quarter inner panel toward the vehicle interior side. then,
The front part of the reinforcement is inserted into the rear pillar, the front end lower part is overlaid on the quarter inner panel, and an anchor bolt is fastened to a weld nut welded to the inner surface (anti-overlap part) of the quarter inner panel. And the overlapping part of the reinforcement together
The reinforcement is formed with a vertical wall portion extending from the vehicle interior side through the notch of the quarter inner panel and extending into the rear pillar, and the peripheral edge of the notch of the quarter inner panel is welded to the vertical wall portion. characterized in that it was.

According to a second aspect of the present invention, in the first aspect of the present invention, a front end flange extending in the longitudinal direction of the vehicle body is formed at a front side portion of the reinforcement inserted into the rear pillar from a notch of the quarter inner panel. The front end flange is joined to the inner surface of the side body outer panel.

  According to the first aspect of the present invention, the notch is formed in the upper part of the quarter inner panel on the rear side of the vehicle body, and a part of the reinforcement is protruded from the notch to the vehicle interior side. It does not overlap the panel, making it easy to weld them. In addition, since a part of the reinforcement protrudes toward the interior of the vehicle interior, it is not affected by the shape of the quarter inner panel, and a bulging shape is formed on the thick reinforcement to increase the rigidity of the reinforcement itself. In addition, it is possible to form a large closed cross section at the upper portion of the rear pillar with a thick reinforcement, and the rigidity of the upper portion of the rear pillar can be increased.

In addition , since the overlapping portion of the quarter inner panel and the reinforcement is joined together by fastening the anchor bolt, the anchor bolt is supported by both the quarter inner panel and the reinforcement, and the support rigidity is enhanced.

Furthermore, because the peripheral edge of the notch of the quarter inner panel is welded to the vertical wall formed in the reinforcement, the force from the rear seat belt to the interior of the vehicle interior acting on the anchor bolt and the force in front of the vehicle body are transmitted to the quarter inner panel. And received by the quarter inner panel. In addition, since the vertical wall portion of the reinforcement functions as a bulkhead (partition wall) of the rear pillar, the rigidity of the rear pillar is enhanced by the vertical wall portion.

According to the second aspect of the present invention, the front end flange extending in the longitudinal direction of the vehicle body is formed in the front side portion of the reinforcement inserted into the rear pillar from the notch of the quarter inner panel, and the front end flange is formed on the inner surface of the side body outer panel. Since they are joined, the force acting on the anchor bolt from the rear seat belt is received by the side body outer panel transmitted to the side body outer panel.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  1 is a perspective view of a rear portion of a vehicle to which the present invention is applied, FIG. 2 is a perspective view of an upper portion of a rear pillar of the vehicle as viewed from the passenger compartment side, FIG. 3 is a sectional view taken along line BB in FIG. 2 is a sectional view taken along the line CC of FIG. 2, FIG. 5 is a sectional view taken along the line DD of FIG. 2, FIG. 6 is a sectional view taken along the line EE of FIG.

  A vehicle body rear surface of the vehicle 1 shown in FIG. 1 is opened, and the opening is opened and closed by a back door 3 whose left and right upper ends are supported by a hinge 2 so as to be vertically rotatable. In addition, a pair of rear pillars 4 constituting a part of the basic skeleton structure of the vehicle body are erected on the left and right sides of the rear end of the vehicle body, and the vehicle interior side inner surface of the upper part of each rear pillar 4 (part A in FIG. 1). The anchor bolt 12 (refer FIG. 3) mentioned later is attached to the.

  Here, as shown in FIGS. 3 and 4, each rear pillar 4 includes a side body outer panel 5 constituting a design surface of the vehicle body side portion, a quarter inner panel 6 disposed on the inside thereof, and these side body outer panels. 5 and a quarter inner panel 6 are formed into a closed cross-sectional shape by an extension panel 7 that connects the respective rear end edges of the quarter inner panel 6 and a reinforcement 8 that will be described later as a reinforcing member. Although not shown, the extension panel 7 is divided into two parts in the vertical direction, and the lower part constitutes a housing for the rear combination lamp and forms a closed section with the side body inner rear.

  The extension panel 7 is a panel member exposed to the periphery of the opening at the rear of the vehicle body when the back door 3 shown in FIG. 1 is opened, and both end edges in the width direction are connected to the side body outer panel 5 and the phosphorus as shown in FIG. The rear ends of the force 8 and the quarter inner panel 6 or the respective rear end edges of the side body outer panel 5 and the reinforcement 8 are spot welded as shown in FIG.

  By the way, in the present embodiment, as shown in FIG. 2, a notch 6a is formed along the cut line L at the upper part of the quarter inner panel 6 on the rear side of the vehicle body. Other than being joined to the force 8, the front end portion (the portion indicated by a broken line in FIG. 2) of the reinforcement 8 is inserted into the rear pillar 4 from the notch 6 a of the quarter inner panel 6 and exposed from the notch 6 a. This portion protrudes toward the vehicle interior side.

  Here, the reinforcement 8 has a thickness (1.2 mm in this embodiment) thicker than the thickness (0.7 mm in this embodiment) of the quarter inner panel 6 as shown in FIG. 7 by press working. It is molded into a simple shape.

  As shown in FIGS. 4 and 7, a rear end flange 8a is formed at the rear end edge of the reinforcement 8, and the rear end flange 8a is inclined forward from the rear end flange 8a toward the vehicle interior. A rising slope portion 8b is formed, and a plane portion 8c substantially parallel to the longitudinal direction of the vehicle body is formed in front of the slope portion 8b. A vertical wall portion 8d that is inclined obliquely toward the vehicle body outer side (side body outer panel 5 side) is formed in front of the plane portion 8c of the reinforcement 8, and the front end of the vertical wall portion 8d. A flat front end flange 8e extending in the longitudinal direction of the vehicle body is formed at the edge.

  In addition, two circular holes 9 and 10 are formed along the upper edge of the reinforcement 8, and as shown in FIG. 3, the rear surface of the lower front end of the front end flange 8e (the surface facing the inner surface of the quarter inner panel 6). ) Is welded with a welding nut 11.

  Thus, as shown in FIGS. 3 and 4, the front portion of the reinforcement 8 is inserted into the interior of the rear pillar 4 from the middle of the vertical wall portion 8d from the notch 6a of the quarter inner panel 6, and the rear pillar 4 As shown in FIG. 3, the lower end portion of the front end flange 8e of the reinforcement 8 inserted therein is overlaid on the back surface of the quarter inner panel 6 (the surface facing the rear pillar 4). Therefore, as shown in FIG. 4, a part of the reinforcement 8 (a part of the vertical wall part 8d and the flat part 8c) protrudes from the notch 6a of the quarter inner panel 6 to the vehicle compartment side to form a bulging part. ing.

  The overlapping portion of the quarter inner panel 6 and the front end flange 8e of the reinforcement 8 is joined by spot welding, and an anchor bolt 12 is passed through the joint from the passenger compartment side. The quarter inner panel 6 and the front end flange 8e of the reinforcement 8 are joined together by fastening together with the weld nut 11 welded to the back surface of the front end flange 8e of the reinforcement 8. As shown in FIG. 3, a sleeve 13 and a washer 14 are inserted through the outer periphery of the anchor bolt 12, and a shoulder anchor of a rear seat belt (not shown) is inserted and held in the sleeve 13. Further, the joint portion of the front end flange 8e of the reinforcement 8 to the quarter inner panel 6 is indicated by a hatched portion a in FIG.

As shown in FIG. 4, the other part of the front end flange 8 e inserted into the rear pillar 4 of the reinforcement 8 is overlapped with the inner surface of the side body outer panel 5 and bonded with an adhesive. It may be done by bolting or welding instead of binding to the side body outer panel 5 of the front flange 8e to adhesive bonding.

  On the other hand, as described above, the periphery of the notch 6 a of the quarter inner panel 6 is joined to the reinforcement 8. Specifically, a flange 6b that is bent along the vertical wall portion 8d of the reinforcement 8 is formed on a part of the periphery of the notch 6a of the quarter inner panel 6, as shown in FIG. The flange 6b is superimposed on the vertical wall portion 8d (shaded portion b in FIG. 7) of the reinforcement 8 and joined by spot welding. That is, the quarter inner panel 6 extending in the front-rear direction of the vehicle is abutted and welded to the vicinity of the center in the left-right direction of the vehicle of the vertical wall portion 8d of the reinforcement 8 extending substantially in the left-right direction of the vehicle. Further, the other part of the periphery of the notch 6a of the quarter inner panel 6 is overlapped with the lower end edge (shaded part c in FIG. 7) of the reinforcement 8 and joined by spot welding.

Further, as shown in FIG. 5, the upper end edge of the reinforcement 8 has two locations (hatched portions d and e in FIG. 7) where the circular holes 9 and 10 (see FIG. 7) are formed inside the roof panel 15. The roof end member 16 is overlapped with the roof end member 16 arranged from below, and bolts 17 and 18 inserted into the circular holes 9 and 10 from below are fastened to welding nuts 19 and 20 welded to the back surface of the roof end member 16. 16 is attached. As shown in FIG. 5, the vehicle rear end of the part is spot welded with the roof panel 15, the roof end member 16, and the reinforcement 8 overlapped.

  Further, as shown in FIG. 6, the end edges of the roof panel 15 and the side body outer panel 5 are overlapped and spot-welded to form a drainage groove 21 that is long in the longitudinal direction of the vehicle body (perpendicular to the plane of FIG. 6). The front end flange 8e of the reinforcement 8 is also spot welded so as to be overlapped with the hatched portion f shown in FIG. 7, and the roof end member 16 and the side body outer panel 5 arranged on the inner side of the roof panel 15 are attached. The ends of the reinforcement 8 arranged on the inner side of each other are overlapped with each other, and both are fastened by the bolts 17. The flange 6c of the quarter inner panel 6 disposed further inside the reinforcement 8 is overlapped with the hatched portion f shown in FIG. 7 and joined to the reinforcement 8 by spot welding.

  Further, the rear end flange 8a of the reinforcement 8 and a part of the inclined surface portion 8 (the hatched portion g portion in FIG. 7) are, as shown in FIGS. 3 to 5, the extension panel 7, the quarter inner panel 6, and the roof end member. 16 and joined by spot welding.

  As described above, in the present embodiment, the notch 6a is formed in the vehicle body rear side upper portion of the quarter inner panel 6, and a part of the reinforcement 8 protrudes from the notch 6a to the vehicle interior side. The whole does not overlap the quarter inner panel 6 and the welding of both is facilitated.

  Further, since a part of the reinforcement 8 is protruded toward the vehicle interior side, the reinforcement 8 itself is formed by forming a bulging shape on the thick reinforcement 8 without being influenced by the shape of the quarter inner panel 6. The rigidity of the upper portion of the rear pillar 4 can be increased by forming a large closed cross section at the upper portion of the rear pillar 4 with the thick reinforcement 8.

  Further, since the overlapping portion of the quarter inner panel 6 and the reinforcement 8 is coupled by fastening the anchor bolt 12 together, the anchor bolt 12 is supported by both the quarter inner panel 6 and the reinforcement 8, and its supporting rigidity. Is increased.

  Further, in the present embodiment, a front end flange 8e extending in the longitudinal direction of the vehicle body is formed at the vehicle body front end portion of the reinforcement 8 inserted into the rear pillar 4 from the notch 6a of the quarter inner panel 6, and the front end flange 8e is side-mounted. Since it is joined to the inner surface of the body outer panel 5, the force acting on the anchor bolt 12 from the rear seat belt is transmitted to the side body outer panel 5 and received by the side body outer panel 5.

  Further, since the peripheral edge of the notch 6a of the quarter inner panel 6 is welded to the vertical wall portion 8d formed in the reinforcement 8, the force acting from the rear seat belt to the anchor bolt 12 toward the vehicle interior and the force in the front of the vehicle body is the quarter. It is transmitted to the inner panel 6 and received by the quarter inner panel 6. Since the reinforcement 8 is welded and fixed to the vehicle body rearward and upward with respect to the mounting position of the anchor bolt 12, it is effective against the direction of the force input from the rear seat belt via the anchor bolt 12. Can receive power. Further, since the vertical wall portion 8d of the reinforcement 8 functions as a bulkhead (partition wall) of the rear pillar 4, the rigidity of the rear pillar 4 is enhanced by the vertical wall portion 8d.

  As another form, the vertical wall portion 8d of the reinforcement 8 extends to the side body outer panel 5, and a convex portion that abuts against the back surface of the side body outer panel 5 is formed on the front end flange 8e extending from the front end of the reinforcement 8 in the vehicle longitudinal direction. The convex portion and the side body outer panel 5 may be bonded and fixed.

  Further, as another form, a welding nut is welded to the convex portion formed on the front end flange 8e of the reinforcement 8, and the reinforcement 8 is fastened to the side body outer panel 5 with a bolt screwed to the welding nut. May be. In this case, the head of the bolt is exposed on the side of the vehicle body, but this head can be covered with garnish or the like.

It is a perspective view of the rear part of vehicles to which the present invention is applied. It is the perspective view which looked at the rear-pillar upper part of the vehicle with which this invention is applied from the compartment side. FIG. 3 is a sectional view taken along line B-B in FIG. 2. It is CC sectional view taken on the line of FIG. It is the DD sectional view taken on the line of FIG. It is the EE sectional view taken on the line of FIG. It is a perspective view of a reinforcement. It is a fragmentary perspective view which removes a side body outer panel and shows the rear pillar part of a vehicle provided with the conventional reinforcement structure. It is the FF sectional view taken on the line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Hinge 3 Back door 4 Rear pillar 5 Side body outer panel 6 Quarter inner panel 6a Quarter inner panel notch 6b, 6c Quarter inner panel flange 7 Extension panel 8 Reinforce 8a Reinforce rear flange 8b Reinforce slope Part 8c Plane part of reinforcement 8d Vertical wall part of reinforcement 8e Front end flange of reinforcement 9, 10 Circular hole 11 Welding nut 12 Anchor bolt 13 Sleeve 14 Washer 15 Roof panel 16 Roof end member 17, 18 Bolt 19, 20 Welding Nut 21 Drainage channel

Claims (2)

In the reinforcement structure of the upper part of the rear pillar of the vehicle, in which the upper part of the rear pillar composed of the side body outer panel and the quarter inner panel is reinforced by reinforcement,
A notch is formed in the upper part of the quarter inner panel on the rear side of the vehicle body, and the periphery of the notch is joined to the reinforcement, and a part of the reinforcement protrudes from the notch of the quarter inner panel toward the vehicle interior side. then,
The front part of the reinforcement is inserted into the rear pillar, the front end lower part is overlaid on the quarter inner panel, and an anchor bolt is fastened to a weld nut welded to the inner surface (anti-overlap part) of the quarter inner panel. And the overlapping part of the reinforcement together
The reinforcement is formed with a vertical wall portion extending from the vehicle interior side through the notch of the quarter inner panel and extending into the rear pillar, and the peripheral edge of the notch of the quarter inner panel is welded to the vertical wall portion. reinforcing structure of the rear pillar upper part of the vehicle, characterized in that it has. A front end flange extending in the longitudinal direction of the vehicle body is formed at a front side portion of the reinforcement inserted into the rear pillar from a notch of the quarter inner panel, and the front end flange is joined to the inner surface of the side body outer panel. The reinforcing structure of the upper part of the rear pillar of the vehicle according to claim 1 .

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