JP2019182016A - Vehicle body rear part structure - Google Patents

Abstract

To provide a vehicle body rear part structure which inhibits deformation of a periphery of a retractor attachment part when a load is input to a retractor, prevents load transmission to an opening of a quarter window, and prevents deformation of the opening of the quarter window.SOLUTION: A vehicle body rear part structure includes: back pillars 2 forming left and right side parts of a back door opening 1; and quarter windows 30, each of which is provided at the vehicle rear side of a side body 3. The back pillar 2 comprises a back pillar inner panel 21, a back pillar outer panel 22, and a rear end part of the side body 3. The inner panel 21 is disposed at the vehicle rear side relative to a rear end 30a of the quarter window 30. A front wall part 21A is provided with an opening 23 for retractor attachment. A retractor attachment part 24 is provided around the opening 23 for retractor attachment on a front surface of the front wall part 21A. A seat belt retractor 4 attached to the retractor attachment part 24 is housed in a space S enclosed by the inner panel 21 and the outer panel 22.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicle body rear structure.

  In the conventional rear structure of the vehicle body, a retractor mounting portion is set on the inner panel of the rear pillar portion of the side body constituting the vehicle body, and the retractor that holds the end portion of the webbing so that it can be wound and pulled out on the mounting portion. Can be attached (for example, refer to Patent Document 1). In such a vehicle body rear structure, the retractor mounting rigidity is improved by providing a retractor in the rear pillar.

JP2013-95302A

  However, in the conventional vehicle body rear structure described above, since the rear pillar is a part of the side body and the rear pillar is formed in a shape having a wide surface, the rear pillar itself is easily bent, and the vehicle is applied to the retractor. There was a concern that the area around the mounting portion of the retractor is likely to be deformed by the load.

  The present invention has been made in view of such a situation, and an object of the present invention is to attach a retractor to a location of a back pillar inner panel having high rigidity, so that the area around the retractor mounting portion at the time of load input to the retractor. An object of the present invention is to provide a vehicle body rear structure capable of suppressing deformation, preventing a load from being transmitted to an opening of a quarter window having low rigidity, and preventing deformation of the opening of the quarter window.

  In order to solve the above-described problems of the prior art, the present invention provides a vehicle body rear structure having a back pillar that forms left and right sides of a back door opening, and a quarter window provided on the vehicle rear side of the side body. The back pillar is composed of a back pillar inner panel, a back pillar outer panel, and a rear end portion of the side body, and the back pillar inner panel is disposed on the vehicle rear side from the rear end of the quarter window, and A front wall portion facing the front side of the vehicle, the front wall portion being provided with a retractor mounting opening, and a front surface of the front wall portion of the retractor mounting opening. A retractor mounting portion is provided in the periphery, and in a space surrounded by the back pillar inner panel and the back pillar outer panel. A seat belt retractor mounted to the retractor mounting portion is housed.

As described above, the vehicle body rear structure according to the present invention includes the back pillars forming the left and right sides of the back door opening, and the quarter window provided on the vehicle rear side of the side body, and the back pillar is a back pillar. An inner panel, a back pillar outer panel, and a rear end portion of the side body, and the back pillar inner panel is disposed on the vehicle rear side from the rear end of the quarter window and has a front wall portion facing the vehicle front side. The front wall is provided with a retractor mounting opening, and a front surface of the front wall is provided around the retractor mounting opening. In a space surrounded by the back pillar inner panel and the back pillar outer panel, a chassis mounted on the retractor mounting portion is provided. Safety belt retractor is housed.
Therefore, in the rear structure of the vehicle body of the present invention, the retractor is attached to the back pillar inner panel where the rigidity is high, so that the deformation around the retractor attaching portion that occurs when the load is input to the retractor is effectively suppressed. be able to.
In the rear structure of the vehicle body of the present invention, the retractor is attached at a position on the vehicle rear side from the rear end of the quarter window, so that a structure in which the quarter window is not disposed above the retractor can be obtained. With this structure, when the webbing is pulled forward due to a front collision etc. and a load above the vehicle is applied to the retractor, it becomes possible to prevent load transmission to the opening of the quarter window with low rigidity. The deformation of the quarter window opening can be prevented.

It is the perspective view which looked at the vehicle interior side rear part to which the vehicle body rear part structure which concerns on embodiment of this invention was applied from diagonally upward of the vehicle side. It is a perspective view which expands and shows the Z section in FIG. FIG. 3 is a perspective view seen from the rear of the vehicle in the direction of arrow X in FIG. It is the expansion perspective view which looked at the retractor attachment part in FIG. 2 from the vehicle front. It is an expansion perspective view which shows the bead of the retractor attachment part in FIG. 2, and its periphery. It is a perspective view which expands and shows the seatbelt retractor in FIG. It is a perspective view which expands and shows the shoulder anchor part in FIG. It is the sectional view on the AA line in FIG.

Hereinafter, the present invention will be described in detail based on illustrated embodiments.
1 to 8 show a vehicle body rear portion structure according to an embodiment of the present invention. In the figure, the arrow Fr direction indicates the front of the vehicle, and the arrow U direction indicates the upper side of the vehicle. In FIG. 6, the direction of arrow I indicates the inside of the vehicle, and the direction of arrow O indicates the outside of the vehicle.

The vehicle to which the vehicle body rear structure according to the embodiment of the present invention is applied is an automobile provided with a back door (not shown) that opens and closes the back door opening 1, and the vehicle body rear part is shown in FIGS. As shown in FIG. 3, it has a back pillar 2 that extends along the vehicle vertical direction and forms the left and right sides of the back door opening 1, and a quarter window 30 provided on the vehicle rear side of the side body 3.
The back pillar 2 of the present embodiment includes a back pillar inner panel 21 positioned on the vehicle front side, a back pillar outer panel 22 positioned on the vehicle rear side, and a rear end portion of the side body 3 positioned on the vehicle side side. The adjacent overlapping portions are joined together by welding or the like to form a closed cross section. And the rear-end part of the side body 3 is comprised from the side body inner panel 31 located in the vehicle front side, and the side body outer panel 32 located in the vehicle rear side, and the adjacent overlapping part is welded etc. They are joined together.

  As shown in FIGS. 2 to 6, the back pillar inner panel 21 in the vehicle body rear structure of the present embodiment is disposed on the vehicle rear side from the rear end 30 a of the quarter window 30. The back pillar inner panel 21 includes a planar front wall portion 21A facing the vehicle front side, and a side wall portion 21B that is bent rearward from the indoor side end of the front wall portion 21A and faces the back door opening 1 side. And have. In addition, a retractor mounting opening 23 having a substantially rectangular shape in front view is provided below the front wall portion 21A of the back pillar inner panel 21, and the front surface of the front wall portion 21A is provided with a retractor mounting. A retractor mounting portion 24 for attaching the seat belt retractor 4 is provided on the lower side of the periphery of the opening 23 for use. In the space S surrounded by the back pillar inner panel 21 and the back pillar outer panel 22, the seat belt retractor 4 attached to the retractor attaching portion 24 using a fastener such as a bolt is housed. The rear floor panel 20 and the upper end of the side body 3 are connected by a back pillar inner panel 21 that extends in the vehicle vertical direction.

Further, in the rear structure of the vehicle body of the present embodiment, a retractor reinforcement 25 that reinforces the retractor mounting portion 24 is provided on the back surface side of the front wall portion 21A where the retractor mounting portion 24 is provided, as shown in FIGS. The retractor reinforcement 25 is joined in a state of being sandwiched between the front wall portion 21 </ b> A and the seat belt retractor 4. By providing the retractor reinforcement 25, the mounting rigidity of the seat belt retractor 4 and the rigidity against vehicle body vibration during traveling of the vehicle are improved.
Furthermore, a bulging portion 26 that bulges into the space S is formed around the retractor mounting portion 24 on the front surface side of the front wall portion 21 </ b> A where the retractor mounting portion 24 is provided. In addition, the retractor mounting portion 24 of the back pillar inner panel 21 is provided with an inverted U-shaped bead 27 extending in a front view so as to surround both the left and right side portions and the upper portion of the retractor mounting portion 24. Has an effect of suppressing the deformation of the back pillar inner panel 21 around the retractor mounting portion 24 against the upward load applied to the seat belt retractor 4.

  The seat belt retractor 4 of this embodiment constitutes a part of a seat belt device for restraining a seated occupant, as shown in FIGS. 1 to 5, and is a long belt-like webbing (also called a seat belt). This is a belt take-up device that holds the end of 5 so that it can be taken up and pulled out. Therefore, the seat belt retractor 4 mainly includes a retractor body 41 having a winding core 41a and a retractor-side webbing lower insertion hole 41b, the retractor body 41 extending upward from the vehicle body, and a lower portion facing the vehicle inner side of the retractor body 41. And a plate-like upper stay 42 for fixing the upper part of the retractor to the back pillar inner panel 21, and the retractor-side webbing lower insertion hole 41 b of the retractor body 41 is inserted through the webbing 5. In order to guide the webbing 5 with respect to the winding core 41a when winding and pulling out.

As shown in FIG. 6, an upper mounting portion 42 </ b> C is provided at the upper end of the upper stay 42.
In addition, the retractor-side webbing lower insertion hole 41b has a function of reducing a deviation (axial deviation) of the webbing 5 wound around the winding core 41a that is generated when the webbing 5 is wound around the seat belt retractor 4. Therefore, the seat belt retractor 4 can obtain a stable winding force. Further, since the variation of the trajectory of the webbing 5 is reduced by the retractor side webbing lower insertion hole 41b, the size of the webbing outlet of the interior trim is reduced, and foreign matter is prevented from entering the back pillar 2 and the appearance is improved. We are also planning.

On the other hand, in the rear structure of the vehicle body of the present embodiment, the shoulder anchor 6 is attached to the upper side of the front wall portion 21A of the back pillar inner panel 21 as shown in FIGS. An anchor mounting portion 28 is provided. The shoulder anchor 6 is a device provided to move the anchor 7 up and down in accordance with the physique of a seated occupant while the webbing 5 is slidably held. Fasteners such as bolts 61 and nuts 62 are provided. Thus, it is fastened and fixed to the shoulder anchor mounting portion 28. The bolts 61 and the like are covered with a cap portion of the shoulder anchor 6 so that they cannot be seen from the outside.
By attaching the shoulder anchor 6 to the shoulder anchor attachment portion 28 provided on the front surface of the front wall portion 21A, the vehicle front load applied to the seat belt retractor 4 when the webbing 5 is pulled forward is applied to the back pillar inner panel 21. The front wall 21A can be received on the front surface of the vehicle body, and the strength against the tensile load at the rear of the vehicle body is increased. Further, when the seat belt device is used or at the time of a collision, the load applied to the webbing 5 is a load forward of the vehicle, and the side pillar 3 supports the fall of the back pillar 2 forward of the vehicle due to this load. 2 is prevented from falling forward.

  Further, as shown in FIGS. 2 and 7, the shoulder anchor 6 of the present embodiment has a webbing insertion hole 63 through which an intermediate portion of the belt-like webbing 5 is slidably inserted. The webbing insertion hole 63 is formed in a shape that is long in the vehicle width direction corresponding to the wide surface 5a of the webbing 5, and the webbing 5 passes through the webbing insertion hole 63 from the vehicle rear side and is folded back. The wide surface 5a of the webbing 5 that passes toward the vehicle and extends from the seat belt retractor 4 toward the upper side of the vehicle is arranged to face the vehicle front-rear direction. As a result, when the seat belt device is used, the wide surface 5a of the webbing 5 that has passed through the webbing insertion hole 63 is parallel to the front surface of the front wall portion 21A of the back pillar inner panel 21, which is caused by individual differences among passengers. Movement of the webbing 5 in the vehicle width direction is restricted, and the webbing 5 is prevented from being caught. A webbing holder 8 through which the webbing 5 is inserted is provided on the front surface of the front wall portion 21 </ b> A located below the shoulder anchor 6, and the webbing holder 8 holds the webbing 5, thereby widening the webbing 5. The surface 5a is more reliably oriented in the vehicle front-rear direction.

  Further, in the rear structure of the vehicle body of the present embodiment, the shoulder anchoring reinforcement is provided on the back side of the shoulder anchor mounting portion 28 from the back door opening 1 to the rear end of the side body 3 as shown in FIG. 29 is arranged. The shoulder anchoring reinforcement 29 is bent in a substantially L shape in a horizontal section, and has a rear end (end) 29a on the back door opening 1 side and a front end on the rear end side of the side body 3. (End portion) 29b is provided, and the front end portion 29b is overlapped and joined to the back surface of the front wall portion 21A of the back pillar inner panel 21. The rear end portion 29 a of the shoulder anchorage 29 on the back door opening side is joined in a state of being sandwiched between the back pillar inner panel 21 and the back pillar outer panel 22, via the webbing 5. The load applied to the shoulder anchor 6 and the shoulder anchor mounting portion 28 can be distributed from the shoulder anchoring force 29 to the entire closed cross section forming the back door opening 1 and the side body 3, so that the panel deformation of the shoulder anchor mounting portion 28 can be performed. It is comprised so that it may suppress.

Therefore, as shown in FIG. 8, a rear flange portion 21a bent toward the back door opening 1 is formed at the rear end of the side wall portion 21B of the back pillar inner panel 21, and the front end of the back pillar outer panel 22 is formed. Are formed with a front flange portion 22a bent toward the back door opening 1, and the flange portions 21a and 22a have shapes and lengths corresponding to the rear end portion 29a of the shoulder anchoring force 29. And is arranged in a state of being superimposed on the rear end portion 29 a of the shoulder anchoring reinforcement 29.
Further, a front flange portion 21b bent toward the side body inner panel 31 is formed at the front end of the front wall portion 21A of the back pillar inner panel 21, and a side body outer panel 32 is formed at the rear end of the back pillar outer panel 22. A rear flange portion 22b that is bent toward the rear is formed. On the other hand, a rear flange portion 31a bent toward the back pillar inner panel 21 is formed at the rear end of the side body inner panel 31, and toward the back pillar outer panel 22 at the rear end of the side body outer panel 32. A bent rear flange portion 32a is formed. The front flange portion 21b of the back pillar inner panel 21 and the rear flange portion 31a of the side body inner panel 31 are joined in an overlapped manner, and the rear flange portion 22b of the back pillar outer panel 22 and the side body outer panel 32 are joined. The rear flange portion 32a is joined in an overlapped state. Further, the front end of the side body outer panel 32 is formed as a front flange portion 32b extending toward the front of the vehicle, and the front flange portion 32b is overlapped with an intermediate portion of the side body inner panel 31 in the vehicle front-rear direction. It is joined in a state. Therefore, the installation location of the shoulder anchor attachment portion 28 of the present embodiment has a closed cross-sectional structure having high rigidity.

As described above, the vehicle body rear structure according to the embodiment of the present invention includes the back pillar 2 that forms the left and right sides of the back door opening 1 and the quarter window 30 that is provided on the vehicle rear side of the side body 3. Yes. The back pillar 2 includes a back pillar inner panel 21, a back pillar outer panel 22, and a rear end portion of the side body 3. The back pillar inner panel 21 has a front wall portion 21 </ b> A that is disposed on the vehicle rear side from the rear end 30 a of the quarter window 30 and faces the vehicle front side. The front wall portion 21A is provided with a retractor mounting opening 23, and a front surface of the front wall portion 21A and a retractor mounting portion 24 around the retractor mounting opening 23. Yes. In the space S surrounded by the back pillar inner panel 21 and the back pillar outer panel 22, the seat belt retractor 4 attached to the retractor attaching portion 24 is accommodated.
For this reason, in the vehicle body rear structure of the present embodiment, the seat belt retractor 4 is attached to the back pillar inner panel 21 where the rigidity is high, and therefore a retractor attachment portion that is generated when a load is input to the seat belt retractor 4. The deformation around 23 can be reduced. Further, in the vehicle body rear structure of the present embodiment, the seat belt retractor 4 is mounted at a position on the vehicle rear side from the rear end 30a of the quarter window 30, so that the quarter window 30 is not disposed above the seat belt retractor 4. A structure can be obtained.
Therefore, according to the vehicle body rear structure of the present embodiment, when the webbing 5 is pulled forward by the front collision or the like and a load above the vehicle is applied to the seat belt retractor 4, the quarter window 30 having low rigidity is applied. It is possible to prevent a load from being transmitted to the opening and to prevent the opening of the quarter window 30 from being deformed. Moreover, the back pillar inner panel 21 to which the seat belt retractor 4 is attached extends in the vehicle vertical direction and connects from the rear floor panel 20 to the upper end portion of the side body 3. Can be transmitted to both members of the rear floor panel 20 and the side body 3.

  Further, in the vehicle body rear structure of the present embodiment, a shoulder anchor mounting portion 28 for attaching the shoulder anchor 6 is provided on the front surface of the front wall portion 21A of the back pillar inner panel 21, so that the webbing 5 is pulled forward of the vehicle. When this is done, the load ahead of the vehicle applied to the seat belt retractor 4 can be received by the front surface of the front wall portion 21A of the back pillar inner panel 21, and the strength against the tensile load at the rear of the vehicle body can be improved. Moreover, when the seat belt device is used or in a collision, the load applied to the webbing 5 is in front of the vehicle, and the side body 3 supports the back pillar 2 falling forward. Can be effectively prevented.

Furthermore, in the vehicle body rear part structure of the present embodiment, a shoulder anchoring force 29 is disposed from the back door opening 1 to the rear end of the side body 3 on the back side of the shoulder anchor mounting portion 28. The shoulder anchorage 29 has a rear end 29a on the back door opening 1 side and a front end 29b on the rear end side of the side body 3. The rear end portion 29a of the shoulder anchorage 29 on the back door opening 1 side is joined in a state of being sandwiched between the back pillar inner panel 21 and the back pillar outer panel 22.
Therefore, according to the vehicle body rear portion structure of the present embodiment, the load applied to the shoulder anchor 6 and the shoulder anchor attachment portion 28 via the webbing 5 is a closed cross section that forms the back door opening 1 from the shoulder anchorage 29. It is possible to smoothly disperse the entire body and the side body 3, and it is possible to reduce deformation of the back pillar inner panel 21 having the shoulder anchor mounting portion 28.

In the vehicle body rear structure of the present embodiment, the shoulder anchor 6 has a webbing insertion hole 63 through which the belt-shaped webbing 5 is inserted, and the webbing insertion hole 63 corresponds to the wide surface 5 a of the webbing 5 in the vehicle width direction. The webbing 5 passes through the webbing insertion hole 63 from the rear side of the vehicle toward the front side of the vehicle, and the wide surface 5a of the webbing 5 extending from the seat belt retractor 4 toward the upper side of the vehicle It is configured to be oriented in the direction.
Therefore, in the vehicle body rear structure of the present embodiment, the wide surface 5a of the webbing 5 that has passed through the webbing insertion hole 63 is positioned in parallel with the front surface of the front wall portion 21A of the back pillar inner panel 21 when the seat belt device is used. Therefore, the movement of the webbing 5 in the vehicle width direction caused by the individual difference of the occupant can be restricted, the catching of the webbing 5 can be suppressed, and the restraining performance of the webbing 5 can be improved. Further, when a sudden load is applied to the webbing 5 in an emergency, it is a phenomenon that the webbing 5 approaches one side of the webbing insertion hole 63, and jamming that causes disturbance or breakage of the webbing 5 restraint performance can be prevented. . Moreover, since the wide surface 5a of the webbing 5 is disposed along the front surface of the front wall portion 21A of the back pillar inner panel 21, a good aesthetic appearance can be obtained.

  In the vehicle body rear structure of the present embodiment, the retractor mounting portion 24 of the back pillar inner panel 21 has an inverted U-shaped bead 27 in front view extending so as to surround the left and right side portions and the upper portion of the retractor mounting portion 24. Therefore, the deformation of the back pillar inner panel 21 around the retractor mounting portion 24 caused by the load applied to the upper part of the vehicle applied to the seat belt retractor 4 can be effectively suppressed.

While the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made based on the technical idea of the present invention.
For example, the seat belt retractor 4 is not limited to the structure of the above-described embodiment, and may be a seat belt retractor having another structure as long as the end portion of the webbing 5 can be securely wound and pulled out. May be.

DESCRIPTION OF SYMBOLS 1 Back door opening part 2 Back pillar 3 Side body 4 Seat belt retractor 5 Webbing 5a Wide surface 6 Shoulder anchor 21 Back pillar inner panel 21A Front wall part 21a Rear flange part 21b Front flange part 22 Back pillar outer panel 22a Front flange part 22b Rear flange 23 Retractor mounting opening 24 Retractor mounting 25 Retractor reinforcement 27 Bead 28 Shoulder anchor mounting 29 Shoulder anchoring 29a Rear end 29b Front end 30 Quarter window 30a Rear end 31 Side body inner panel 32 Side body outer panel 61 Bolt 62 Nut 63 Webbing insertion hole S Space

Claims (5)

In the vehicle body rear structure having a back pillar that forms both right and left sides of the back door opening, and a quarter window provided on the vehicle rear side of the side body,
The back pillar includes a back pillar inner panel, a back pillar outer panel, and a rear end portion of the side body,
The back pillar inner panel is disposed on the vehicle rear side from the rear end of the quarter window and has a front wall portion facing the vehicle front side. The front wall portion is provided with a retractor mounting opening. And at the front of the front wall portion, around the retractor mounting opening, a retractor mounting portion is provided,
A vehicle body rear structure, wherein a seat belt retractor attached to the retractor attachment portion is accommodated in a space surrounded by the back pillar inner panel and the back pillar outer panel.   The vehicle body rear part structure according to claim 1, wherein a shoulder anchor mounting portion for attaching a shoulder anchor is provided on a front surface of the front wall portion. On the back side of the shoulder anchor mounting portion, a shoulder anchoring reinforcement is disposed across the rear end portion of the side body from the back door opening,
The shoulder anchoring force has an end portion on the back door opening side and an end portion on the rear end side of the side body, and the end portion on the back door opening side of the shoulder anchoring force is The vehicle body rear part structure according to claim 2, wherein the vehicle body rear part structure is joined in a state of being sandwiched between the back pillar inner panel and the back pillar outer panel.   The shoulder anchor has a webbing insertion hole through which a belt-shaped webbing is inserted. The webbing insertion hole is formed in a shape elongated in the vehicle width direction corresponding to the wide surface of the webbing, and the webbing is formed in the webbing insertion hole. The wide surface of the webbing that passes from the rear side of the vehicle toward the front side of the vehicle and extends from the seat belt retractor toward the upper side of the vehicle is arranged to face the vehicle front-rear direction. The vehicle body rear part structure according to any one of claims 2 and 3.   The reverse retractor mounting portion of the back pillar inner panel is provided with an inverted U-shaped bead in front view extending so as to surround the left and right side portions and the upper portion of the retractor mounting portion. Car body rear part structure of any one of -4.

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