JP4314991B2 - Car body rear structure - Google Patents

Description

  The present invention relates to a vehicle body rear structure.

  The following patent documents are known about the vehicle body rear part structure provided with the retractor which winds up a seatbelt, and the striker latched to a vehicle body member.

  In Patent Document 1 (see FIG. 6), a rear pillar is provided behind a vehicle body opening that is opened and closed by a door member (not shown), and a front end wall is provided so as to face the vehicle body opening on the vehicle front side of the rear pillar. A striker capable of locking the door member is provided so as to protrude from the front end wall to the vehicle body opening. On the other hand, a rear pillar inner is disposed on the vehicle body inner side of the rear pillar toward the rear of the vehicle, and the rear pillar and the rear pillar inner Discloses a vehicle body rear structure in which a retractor for winding a seat belt is fastened to a rear pillar inner and a stiffener via a bracket, which is joined via a stiffener having an L-shaped cross section, whereby rigidity around a striker mounting portion of the rear pillar is disclosed. It is said that the strength and rigidity of the rear part of the vehicle body can be improved.

  Seat belt retractors are known to be subject to extremely high loads on their mountings to restrain passengers when the vehicle is in an accident such as a collision.If sufficient mounting strength is not secured, Deformation of the attachment part occurs, and in the worst case, the attachment part is broken, and the function of restraining the occupant may be impaired. From this point, the retractor of Patent Document 1 below is divided into a rear pillar inner and a stiffener. It is considered that the attachment strength has been improved.

  By the way, many structures for reinforcing the pillar by disposing the reinforcement in the pillar have been proposed. However, in the following Patent Document 1, the reinforcement is not disposed in the pillar but temporarily disposed. Even if an attempt is made, since there is an L-shaped stiffener at the portion corresponding to the height of the door striker, the reinforcement has to be arranged by dividing it into upper and lower parts, resulting in a complicated structure. Therefore, the vehicle body rear structure disclosed in Patent Document 1 is insufficient for the safety required for recent automobiles, and a new structure such as a retractor can be attached with sufficient strength and the vehicle body rear part has a simple structure. A structure is required.

JP 7-329827 A

  Accordingly, it is an object of the present invention to provide a vehicle body rear structure in which a seatback striker and a seat belt retractor are close to each other, and these can be attached to the vehicle body with a simple structure and the attachment strength can be improved.

  The first structure of the vehicle body rear structure relating to the present invention is an anchor plate in which a retractor for a rear seat belt is joined to a rear inner panel on the vehicle interior side of a rear inner panel disposed in the vicinity of the rear rear opening of the rear side door. The vehicle body rear structure has an inner wheel house portion that is joined to the rear inner panel so as to protrude toward the vehicle interior from the rear rear door opening rear portion to the vicinity of the rear end of the vehicle. The vehicle front side portion of the anchor plate is joined to the rear pillar reinforcement that is disposed and joined in the rear pillar, and the vehicle rear side portion of the anchor plate is joined to the inner wheel house portion. Suspension housing gusset flange joined to the top of the rear and the rear inner panel It is intended to be joined across the rear inner panel.

  According to the first configuration, the anchor plate is joined to the inner side of the inner panel, so that the joint between the anchor plate and the rear inner panel is not affected even when a load that pulls the retractor toward the inner side of the passenger compartment is applied. This is advantageous because it receives a compressive load rather than a tensile load, so that the joint does not come off. In addition, since the anchor plate is joined to the inner side of the inner panel, the front side of the anchor plate can be joined to the rear pillar reinforcement that is disposed and joined in the rear pillar to reinforce the vehicle body. The side part is joined to the flange part of the suspension housing gusset joined to the rear inner panel and the inner wheel house part joined so as to protrude from the rear inner panel toward the vehicle interior. Is structured to be joined to the flange portion of the suspension housing gusset across the rear inner panel. Therefore, both the vehicle front side portion and the rear side portion of the anchor plate are firmly joined to improve the rigidity.

  Further, the attachment strength of the retractor of the seat belt attached to the anchor plate can be improved with a simple structure without using another member such as a stiffener to reinforce the anchor plate.

  In a second configuration according to the present invention, the lower portion of the rear pillar reinforcement is an extended portion that extends toward the outer wheel house that is integrally formed so as to protrude from the rear inner panel toward the outside of the passenger compartment. The extended portion distal end portion is joined to the outer wheel house portion.

  According to the second configuration, the distal end portion of the extending portion extending downward of the rear pillar reinforcement is joined to the outer wheel house portion of the rear inner panel, and the rear pillar reinforcement is joined to the rear pillar to reinforce it. It is assumed that the structure. Therefore, since the rear pillar reinforcement is joined to the vehicle body member from the upper part to the lower end part thereof, the mounting rigidity is improved. Accordingly, the anchor plate vehicle is attached to the extending part extending below the rear pillar reinforcement. In the structure in which the front side portion is joined and the retractor of the seat belt is attached to the anchor plate, the effect of improving the attachment strength can be further promoted.

  In a third configuration relating to the present invention, a striker base member to which a striker for seat back locking is attached is also attached to the anchor plate.

  According to the third configuration, as described in the first configuration, the front and rear sides of the anchor plate are joined to the rear pillar reinforcement and the suspension housing gusset, which are vehicle body reinforcing members, respectively. The striker pedestal member attached to the anchor plate is also attached to the vehicle body via the anchor plate with high strength, and the attachment strength of the seat back locking striker attached to the striker pedestal member can also be improved.

  According to a fourth configuration of the present invention, the striker pedestal member has a substantially hat-shaped cross section having attachment portions to the anchor plates on both sides across the retractor, and faces the vehicle interior side of the striker pedestal member. A seatback locking striker is erected on a substantially hat-shaped top surface.

  According to the fourth configuration, it is possible to solve the problem of interference associated with the arrangement of the retractor and the striker, and to effectively improve the mounting strength of the striker with a simple structure. In addition, the length in the vehicle width direction of the striker for locking the seat back can be shortened by the protruding height of the striker base in the vehicle width direction compared to the case where it is directly assembled to the inner panel, thus improving its rigidity. In addition, a structure suitable for locking the seat back can be obtained.

  Further, according to the fourth configuration, since the retractor is covered with the striker base member, it is possible to increase the retractor protection as compared with the case where the retractor is covered only with the resin trim.

  As described above, according to the present invention, in the rear structure of the vehicle body in which the seat back striker and the seat belt retractor are close to each other, they can be attached to the vehicle body with a simple structure and the mounting strength can be improved.

  Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing an interior rear side surface of a vehicle according to the present invention. According to FIG. 1, the vehicle 1 is provided with a retractable rear seat 3, and a rear side door 5 is disposed on the side of the rear seat 3 so as to be openable and closable with respect to the rear side door opening 7. A recess 3c is provided in the back surface portion 3b of the seat back 3a, which is a constituent member of the rear seat 3 and can be tilted toward the front of the vehicle, and a lock member (not shown) is provided in the recess 3c. When the seat back 3a is raised, it engages with a seat back locking striker 21 (hereinafter referred to as a striker 21) that is fixed to the vehicle body side surface and protrudes in the vehicle width direction. The standing state of the seat back 3a usually refers to a state in which the seatback 3 is tilted slightly to the rear side of the vehicle from the vertical state. And is connected to the striker base member 21 (see FIG. 2) at a predetermined angle from the horizontal state.

  A rear upper side trim 9 and a rear lower side trim 11 facing the vehicle interior cover a vehicle body member (details will be described later) disposed on the outer side of the vehicle behind the rear side door opening 7. It is arranged.

  The rear upper side trim 9 has a front portion 9a close to the rear of the vehicle on the rear side door opening 7, and a seat belt webbing 27 for restraining an occupant seated on the rear seat 3 is inserted into the front portion 9a so as to be able to be extended. An insertion port 9b is formed. The front portion 9a of the rear upper side trim 9 covers an upper portion of a rear pillar inner (detailed later) constituting the vehicle rear portion of the rear side door opening 7.

  On the other hand, the rear lower side trim 11 is slightly inward in the vehicle width direction at the front part 11a covering the lower part of a rear pillar inner (detailed later) constituting the rear part of the rear side door opening 7 and the front part 11a. A first projecting portion 11b projecting from the upper portion of the projecting portion 11b, a second projecting portion 11d projecting toward the cargo compartment 17 at a lower portion of the projecting portion 11c, A rear end portion 11e that is curved from the vehicle rear end portion of the two protruding portions 11d and extends inward in the vehicle width direction is integrally formed.

  A rear end trim 13 is disposed in the vehicle width direction from the inner end in the vehicle width direction of the rear end portion 11e of the rear lower side trim 11, and a flat cargo room floor facing the front of the vehicle from the lower end portion of the rear end trim 13. A member 15 is provided. Therefore, the cargo compartment 17 is formed by the rear upper side trim 9, the rear lower side trim 11, the rear end trim 13, and the cargo compartment floor member 15. Reference numeral 19 denotes a cargo compartment rear opening that is opened and closed by a back door (not shown).

  A striker pedestal member 23 for fixing the striker 21 is provided on the outer side of the first projecting portion 11b provided at the rear of the front portion 11a of the rear lower side trim 11 and slightly projecting inward in the vehicle width direction. A seat belt retractor 25 (hereinafter referred to as the retractor 25) for winding the seat belt webbing 27 is provided, and the details of the structure will be described with reference to FIG. FIG. 2 shows the vehicle body structure before the rear upper side trim 9 and the rear lower side trim 11 shown in FIG. 1 are assembled.

  According to FIG. 2, the vehicle rear portion of the rear side door opening 7 is integrally disposed so that the rear inner panel 33 faces the vehicle rear. The vehicle inner end of the rear inner panel 33 is a rear pillar inner 31 and faces the rear side door opening 7. A rear outer panel (not shown) is disposed outside the rear inner panel 33 in the vehicle front-rear direction, and a vehicle front end portion of the rear outer panel serves as a rear pillar outer (not shown) and a rear pillar inner 31. The rear pillar outer and the rear pillar inner 31 are joined to form a rear pillar (not shown).

  An anchor plate 45 is joined to the outer side of the rear inner panel 33. The retractor 25 and the striker pedestal member 23 that supports the striker 21 are connected to the overlapping portion 46 where the anchor plate 45 and the rear inner panel 33 are overlapped and joined.

  Specifically, as shown in FIG. 2 or FIG. 3 showing the AA cross-section of FIG. 2, the striker base member 23 has a vehicle width from the front fixing surface portion 23b, the rear fixing surface portion 23c, and both the fixing surface portions 23b, 23c. It consists of standing parts 23d, 23d standing inward in the direction and a top surface part 23a connecting the inner end parts in the vehicle width direction of the compatible parts 23d, 23d, and a front fixing surface part 23b and a rear fixing surface part 23c, respectively. The anchor plate 45 and the rear inner panel 33 are fixed to the overlapping portion 46 by fastening members T1, T1. Therefore, the striker base member 23 is a member formed in a substantially hat-shaped cross section, and the striker 21 is fastened to the top surface portion 23a.

  Therefore, as compared with the case where the striker 21 is directly fastened to the overlapping portion 46, the striker 21 extends in the vehicle width direction by the amount fastened to the top surface portion 23a (that is, the height in the vehicle width direction of the standing portions 23d and 23d). The length can be shortened, the rigidity is improved, and a structure suitable for locking the seat back can be obtained.

  Moreover, the retractor 25 is arrange | positioned so that it may straddle by the standing parts 23d and 23d of the striker base member 23, and the top surface part 23a, and it is fastened with the fastening member T2 with respect to the overlap part 46. FIG.

  Further, according to FIG. 2, the inner wheel house 39 is joined to the lower portion of the rear inner panel 33 so as to protrude inward in the vehicle width direction, that is, toward the vehicle interior. The inner wheel house 39 has an upper surface portion 39a, and a suspension housing gusset 41 is joined to the upper surface portion 39a.

  The suspension housing gusset 41 includes a lower surface portion 41 a that is installed and joined along the upper surface portion 39 a of the inner wheel house 39, an upper portion that is bent substantially perpendicularly from the lower surface portion 41 a and extends upward, and is spaced apart from the rear inner panel 33. The extended surface portion 41c, the upright surface portion (not indicated) extending from the vehicle front-rear direction end portion of the upper extended surface portion 41c toward the rear inner panel 33, and the rear inner panel 33 at the vehicle outer end of the upright surface portion. It has flange portions 41b and 41b joined in contact with each other.

  A part of the vehicle front side flange portion 41b of the suspension housing gusset 41 is also joined to the rear side portion 45R (see FIG. 5) of the anchor plate 45 with the rear inner panel 33 interposed therebetween. The front side portion 45F (see FIG. 5) of the anchor plate 45 is joined to the rear pillar inner 31 that is the vehicle front end portion of the rear inner panel 33 and the lower portion of the rear pillar reinforcement 35 that is connected to the rear pillar outer. ing.

  Next, the structure of the rear pillar reinforcement 35 will be described with reference to FIG. 3 and FIG. 4 which is a perspective view of the rear pillar reinforcement 35 from the outside of the vehicle. The connection structure of the side part 45F is demonstrated in detail using FIG.3 and FIG.5. 5 is a view in the direction of the arrow B in FIG. 2, that is, a side view from the cargo compartment 17 side toward the outside of the vehicle. In FIG. 5, the striker base member 23, the striker 21, the retractor 25, and the seat The belt webbing 27 is omitted. Further, for easy understanding of the figure, the rear pillar reinforcement 35 is indicated by an imaginary line.

  First, as shown in FIG. 3, a rear pillar reinforcement 35 is joined to the front side portion 45 </ b> F of the anchor plate 45. As can be seen from FIGS. 3 and 4, the rear pillar reinforcement 35 has a vehicle outer end surface portion 35a, a connection surface portion 35b, and a vehicle inner end surface portion 35c, and extends in the vehicle width direction. 35b is a member formed integrally with a vehicle outer end surface portion 35a extending rearward from the vehicle outer end and a vehicle inner end surface portion 35c extending forward from the vehicle inner end of the connecting surface portion 35b. The entire rear pillar reinforcement 35 has a long shape extending in the vehicle vertical direction. 3 is a cross section taken along the line AA in FIG. 2, the upper part of the retractor 25 is represented as a cut surface.

  More specifically, as shown in FIG. 4, in the rear pillar reinforcement 35, the vehicle front-rear direction width of the vehicle inner end surface portion 35c is shortened from the middle portion in the height direction, and the vehicle inner end surface portion 35c having a shorter width is formed. The vehicle outer end surface portion 35a and the connecting surface portion 35b form an extending portion 35d extending downward.

  As shown in FIG. 5, the vehicle inner end surface portion 35c of the extending portion 35d and the front side portion 45F of the anchor plate 45 are joined by a welded portion W6 indicated by X with the rear inner panel 33 interposed therebetween, and further welded. In the portion W7, the front side portion 45F of the anchor plate 45 and the rear inner panel 33 are directly joined. The upper portion of the vehicle inner end surface portion 35c of the rear pillar reinforcement 35 is joined to the rear pillar inner 31 of the rear inner panel 33 by a plurality of welds W4 indicated by X, and the upper portion of the vehicle outer end surface portion 35a is It joins to an outer panel by the some welding part W8 shown by X mark.

  Further, the distal end portion 35e of the extended portion 35d shown in FIG. 4 is in contact with an outer wheel house 37 (see FIG. 3) that is integrally provided so as to protrude toward the outside of the passenger compartment at the rear inner 33. It is bent and joined by a plurality of welds W5 indicated by X.

  Therefore, since the rear pillar reinforcement 35 is joined to the rear pillar inner 31, the rear outer panel, and the outer wheel house 37, the mounting rigidity is improved. Accordingly, the attachment strength of the retractor 25 can be improved.

  On the other hand, as shown in FIG. 5, the rear side portion 45 </ b> R of the anchor plate 45 is joined to the outer surface of the rear inner panel 33. Specifically, the inner wheel house 39 protruding toward the cargo compartment 17 side, that is, toward the passenger compartment, is formed with a flange 39b. The flange 39b is joined to the rear inner panel 33 by a plurality of welds W2 indicated by X, The suspension housing gusset 41 to be joined on the inner wheel house 39 has a flange portion 41b on the vehicle front side joined to the rear inner panel 33. The rear side portion 45R of the anchor plate 45 and the vehicle of the suspension housing gusset 41 The front flange portion 41b is joined at a plurality of welds W3 indicated by X with the rear inner panel 33 interposed therebetween.

  Therefore, the anchor plate 45 has a rear side portion 45R joined to the rear pillar reinforcement 35 and the rear inner panel 33, and a rear side portion 45R of the suspension housing gusset 41 on the vehicle front side flange portion 41b and the rear inner panel. Thus, the structure is extremely high in bonding strength. As a result, even if the retractor 25 and the striker base member 23 are coupled to the overlapping portion 46, they can be supported with high strength.

  Although the embodiment according to the present invention has been described above, according to this, the anchor plate 45 is joined to the outer side portion of the rear inner panel 33 and the vehicle front side portion 45F of the anchor plate 45 is connected to the rear inner panel. 33, an outer wheel house 37, and a rear pillar reinforcement 35 joined to the rear outer panel 35 are joined together with the rear inner panel 33 together with the rear inner panel 33, and the vehicle rear side portion 45R of the anchor plate 45 is connected to the suspension housing gusset 41. Since the structure is joined to the flange portion 41b and the rear inner panel 33, the joining strength with the vehicle body is extremely high. The retractor 25 and the striker pedestal member 23 formed so as to straddle the retractor 25 are joined by overlapping the anchor plate 45 and the inner panel 33 having a very high joint strength with the vehicle body as described above. Since it is connected to the overlapping portion 46, the mounting strength can be improved. Furthermore, a simple structure in which the retractor 25 and the striker base member 23 do not interfere with each other is obtained.

The perspective view which shows the indoor back side part of the vehicle which concerns on this invention The perspective view which shows the vehicle body structure before assembling the trim member shown in FIG. The figure which shows the AA cross section of FIG. Perspective view of rear pillar reinforcement from outside of vehicle B direction arrow view of FIG. Diagram showing conventional technology

Explanation of symbols

5 ... rear side door 7 ... rear side door opening 21 ... striker 23 for seat back locking ... striker base member 23a ... top surface 25 of striker base member ... retractor 27 ... seat Belt webbing (rear seat belt)
33 ... Rear inner panel 35 ... Rear pillar reinforcement 35d ... Extension part 35e ... Rear pillar reinforcement extension part 37 ... Outer wheel house 41 ... Suspension housing gusset 41b: Flange 45 of suspension housing gusset ... Anchor plate 45F ... Vehicle front side 45R of anchor plate ... Vehicle rear side of anchor plate

Claims (4)

A retractor for a rear seat belt is attached to an interior side of a rear inner panel disposed near the rear rear opening of the rear side door together with an anchor plate joined to the rear inner panel. In the rear structure of the vehicle body having an inner wheel house portion that is joined to the rear inner panel so as to protrude toward the vehicle interior over the vicinity of the rear end of the vehicle.
The anchor plate is joined to an outer side portion of the rear inner panel, and a vehicle front side portion of the anchor plate is joined to a rear pillar reinforcement disposed and joined in the rear pillar. A vehicle body rear structure, wherein a rear side portion is joined to a flange portion of a suspension housing gusset joined to an upper portion of the inner wheel house portion and the rear inner panel with the rear inner panel interposed therebetween.   The lower portion of the rear pillar reinforcement according to claim 1 is an extending portion that extends toward the outer wheel house portion that is integrally formed so as to protrude outward from the rear inner panel. The rear structure of the vehicle body is characterized in that a front end portion of the installation portion is joined to the outer wheel house portion.   The vehicle body rear part structure according to claim 1 or 2, wherein a striker base member to which a seatback locking striker is attached is also attached to the anchor plate.   4. The striker pedestal member according to claim 3, wherein the striker pedestal member has a substantially hat-shaped cross section having attachment portions to the anchor plate on both sides across the retractor, and substantially faces the vehicle interior side of the striker pedestal member. A rear structure of a vehicle body, wherein the seatback locking striker is erected on a hat-shaped top surface.

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