JP2006130945A - Rear side surface part structure for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rear side surface part structure for a vehicle capable of suppressing complexity of the structure an increase in weight, ensuring sufficient mounting strength and suppressing movement of a seat belt. <P>SOLUTION: A thick plate 5 fixed with a seat belt retractor 64 is joined to both quarter inner panel 2 and a wheel house 3 in a relatively wide range. Therefore, at the time of collision of the vehicle 1, load transmitted from an occupant through the seat belt 63 for a rear seat is dispersed and applied well to a joint part of the plate 5 and the quarter inner panel 2 and a joint part of the plate 5 and a wheel house outer panel 7 and generation of excessive stress at these joint parts is certainly suppressed. Further, since the seat belt retractor 64 is directly mounted to the plate 5, it can be made to a structure that increase in the weight and increase in the number of parts are suppressed to the minimum. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a rear side surface structure of a vehicle.

  2. Description of the Related Art There is known a rear side surface structure of an automobile that joins a lower end edge of a quarter inner panel constituting a rear side surface of a vehicle and an upper end edge of a wheel house.

Japanese Patent No. 3210897 Patent No. 3307849

  By the way, in general, a vehicle having a rear seat at the rear part of the passenger compartment is provided with a seat belt for restraining an occupant seated on the rear seat and ensuring the safety of the occupant during a collision. In addition, there is one in which one end of a seat belt is supported by a joint portion between a quarter inner panel and a wheel house for reasons such as layout. A seat belt support member such as a seat belt retractor is connected to one end of the seat belt, a mounting plate is fixed to the joint portion, and the seat belt support member is coupled to the mounting plate. When the vehicle collides, a large load is applied to the seat belt support member and the mounting plate from the occupant via the seat belt.

  However, in the above structure, due to the load transmitted from the occupant through the seat belt, the stress generated at the joined portion between the quarter inner panel and the wheel house becomes excessive, and the occupant is allowed to move the seat belt due to breakage of the joined portion. There is a possibility that the restraint state is released.

  And in order to eliminate the said inconvenience, when the plate | board thickness of the whole quarter inner panel is increased, the increase in a weight will be caused. Further, if the joint portion between the quarter inner panel and the wheel house is reinforced by the reinforcing member, the number of parts increases, the weight increases, the structure becomes complicated, and the installation workability becomes complicated.

  Further, since it is necessary to separately provide a mounting plate at the joint portion, this also leads to an increase in the number of parts, an increase in weight, a complicated structure, and a complicated mounting workability.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a rear side surface structure of a vehicle that can suppress the complication of the structure and increase in weight, and that can secure the sufficient mounting strength and prevent the movement of the seat belt. And

  In order to achieve the above object, a vehicle rear side surface structure according to the present invention includes a quarter inner panel, a wheel house, a quarter-outer panel, and a plate.

  The quarter inner panel is formed on the rear side of the vehicle. The wheel house is disposed below the quarter inner panel, and has a wheel house inner panel on the inner side in the vehicle width direction and a wheel house outer panel on the outer side in the vehicle width direction, and an upper edge portion on the outer side in the vehicle width direction of the wheel house inner panel. The wheel house outer panel is joined to the upper edge of the inner side in the vehicle width direction to define a tire storage space. The quarter-outer panel is disposed on the outer side in the vehicle width direction of the quarter inner panel, and is joined to the upper edge portion of the quarter inner panel and the outer edge portion on the outer side in the vehicle width direction of the wheel house outer panel. The plate is disposed between the wheel house and the quarter inner panel, is joined to a joint portion between the wheel house inner panel and the wheel house outer panel, and a lower edge portion of the quarter inner panel, and is attached to the seat belt support member. Part.

  In the above configuration, the plate having the mounting portion for the seat belt support member is joined to both the quarter inner panel and the wheel house in a relatively wide range. For this reason, in the event of a vehicle collision, the load transmitted from the occupant via the seat belt does not act on a specific part, and the joint between the plate and the quarter inner panel, the plate and the wheel house, Therefore, it is possible to suppress the occurrence of excessive stress at these joint portions. Therefore, a simple structure in which a plate is interposed between the quarter inner panel and the wheel house ensures a sufficient mounting strength of the seat belt support member at the time of a vehicle collision and prevents movement of the seat belt. Can do.

  In addition, since the plate is separate from the quarter inner panel and the wheel house, the plate thickness of the plate can only withstand the load without increasing the weight due to the thickening of the quarter inner panel or wheel house. It is possible to set the limit size. Further, since the seat belt support member is directly attached to the plate, a member such as a bracket for attaching the seat belt support member to the plate is unnecessary. Accordingly, a structure in which an increase in weight and an increase in the number of parts can be minimized.

  Furthermore, since the plate is interposed between the quarter inner panel and the wheel house, the quarter inner panel can be reduced in size by an amount corresponding to the plate. (Material reduction is described in the examples)

  According to the present invention, it is possible to prevent the movement of the seat belt by securing a sufficient mounting strength by the structure that suppresses the increase in complexity and weight.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view showing a state in which a plate is joined between a quarter inner panel and a wheel house according to the present embodiment, and FIG. 2 is a cross-sectional view taken along the line II-II in FIG. In the figure, FR indicates the front of the vehicle, and UP indicates the upper side of the vehicle.

  As shown in FIGS. 1 and 2, the vehicle 1 according to the present embodiment is a vehicle in which a rear seat (not shown) is provided at the rear part of the vehicle interior. A quarter inner panel 2 that extends in the vertical direction on the side surface on the indoor side, a wheel house 3 that is disposed below the quarter inner panel 2 and covers a rear wheel (not shown) from above, and on the outer side in the vehicle width direction of the quarter inner panel 2 The quarter-outer panel 4 is disposed, and the plate 5 is disposed between the quarter-inner panel 2 and the wheel house 3.

  The quarter inner panel 2 includes a side surface 10 that extends while drawing a slight arc in the vertical direction, a rear window mounting opening 11 formed in the side surface 10, and a lower end of the side surface 10 toward the inside in the vehicle width direction. An upper surface portion 12 that is bent and extends, a lower edge portion 13 that extends while drawing a circular arc downward from an end of the upper surface portion 12 in the vehicle width direction, and an upper edge portion that is formed above the side surface portion 10 (not shown) ).

  The wheel house 3 includes a wheel house inner panel 6 disposed on the vehicle interior side, and a wheel house outer panel 7 disposed on the outer side in the vehicle width direction of the wheel house inner panel 6. The wheel house inner panel 6 bulges upward and inclines downward toward the inner side in the vehicle width direction, and extends from the end of the upper surface portion 30 in the vehicle width direction so as to bend downward in an arc shape. Part 31, upper edge part 32 that extends upward from an end part on the outer side in the vehicle width direction of upper surface part 30, and lower edge part 33 that is the lower end of extension part 31. The wheel house outer panel 7 includes an upper surface portion 40 that bulges upward, an upper edge portion 41 that bends upward from an inner end portion in the vehicle width direction of the upper surface portion 40, and an outer end portion in the vehicle width direction of the upper surface portion 40. And an outer edge portion 42 that is bent downward from the portion. In the wheel house inner panel 6 and the wheel house outer panel 7, the upper edge portion 32 and the upper edge portion 41 are joined by welding or the like. Thereby, the rear wheel is covered from above.

  A rear floor panel 61 is disposed on the bottom of the rear part of the passenger compartment. The rear floor panel 61 has outer edge portions 62 that are bent downward from ends on both sides in the vehicle width direction. The rear floor panel 61 and the wheel house inner panel 6 are joined at their outer edge 62 and lower edge 33 by welding or the like. Thereby, the floor of the rear part of a vehicle interior is formed.

  The quarter-outer panel 4 faces the quarter-inner panel 2 and extends while drawing a slight arc in the vertical direction. The quarter-outer panel 4 has an opening formed on the side-face 20 and substantially the same as the opening 11 of the quarter-inner panel 2. A lower edge portion 22 that is the lower end of the side surface portion 20, a draining portion 23 that extends from the lower edge portion 22 inward in the vehicle width direction, and a side portion 20. And an upper edge (not shown). In the quarter-outer panel 4 and the wheel house outer panel 7, the lower edge portion 22 and the outer edge portion 42 are joined by welding or the like, and the joined portion cannot be visually recognized from the outside in the vehicle width direction by the drainage portion 23. Further, the quarter inner panel 2 and the quarter-outer panel 4 have their upper edge and upper edge joined together by welding or the like. Note that a roof panel (not shown) is disposed above the joint portion.

  The plate 5 has a substantially plate shape, and has an upper edge portion 50 having a substantially horizontal surface at the upper end, a lower edge portion 51 having a surface bulging upward at the lower end, and a front of the vehicle below the plate 5. A seat belt attachment portion (attachment portion of the seat belt support member) 53 extending toward the front. The seat belt attaching portion 53 has a bolt attaching hole 52 for fixing the rear seat belt 63. In the plate 5 and the quarter inner panel 2, the upper edge portion 50 and the lower edge portion 13 are joined to each other by welding or the like in a relatively wide range. Further, the lower edge 51 and the upper edge 41 of the plate 5 and the wheel house outer panel 7 are joined by welding or the like in a relatively wide range. Thereby, a closed cross section along the vehicle front-rear direction is formed between the quarter inner panel 2, the wheel house outer panel 7, the quarter outer panel 4, and the plate 5. Further, the rear seat belt 63 is fixed to the plate 5 by a bolt 66 that is inserted into a hole 65 formed in the seat belt retractor 64 and screwed into the bolt mounting hole 52 of the plate 5.

  As shown in FIG. 2, the plate thickness of each of the quarter inner panel 2, the wheel house 3, and the quarter outer panel 4 is set to a size that satisfies basic performance such as tension rigidity. On the other hand, the thickness of the plate 5 is required to be strong enough to withstand the load applied from the passenger via the rear seat belt 63 when the vehicle collides. Therefore, the quarter inner panel 2, the wheel house 3, and the quarter-outer are required. It is set to be thicker than the thickness of each panel 4.

  Thus, according to the present embodiment, the plate 5 to which the seat belt retractor 64 is fixed is joined to both the quarter inner panel 2 and the wheel house 3 in a relatively wide range. For this reason, the load transmitted from the occupant through the rear seat belt 63 when the vehicle 1 collides or the like does not concentrate on a specific portion and acts on the upper edge 50 of the plate 5 and the quarter inner panel. 2 acts on the joint portion between the lower edge portion 13 and the lower edge portion 51 of the plate 5 and the joint portion between the upper edge portion 41 of the wheel house outer panel 7 and excessive stress at these joint portions. Occurrence is reliably suppressed. Accordingly, a simple structure in which the plate 5 is interposed between the quarter inner panel 2 and the wheel house 3 sufficiently secures the mounting strength of the seat belt retractor 64 at the time of a collision of the vehicle 1 and the like. The movement of 63 can be prevented.

  Further, since the plate 5 is separate from the quarter inner panel 2 and the wheel house 3, only the plate thickness of the plate 5 is increased without increasing the weight due to the thickening of the quarter inner panel 2 or the wheel house 3. It is possible to set the minimum size that can withstand the load. Further, since the seat belt retractor 64 is directly attached to the plate 5, a member such as a bracket for attaching the seat belt retractor 64 to the plate 5 is unnecessary. Accordingly, a structure in which an increase in weight and an increase in the number of parts can be minimized.

  Since the plate 5 is joined to both the quarter inner panel 2 and the wheel house 3 in a relatively wide range, the plate 5 is attached to the quarter inner panel 2 and the seat belt mounting portion 53 with the seat belt retractor 64 attached. Even if it joins to both of the wheel house 3, it will not interfere with joining work, such as welding. Therefore, the degree of freedom in the assembling order is increased and the assembling process can be simplified.

  Furthermore, since the plate 5 is interposed between the quarter inner panel 2 and the wheel house 3, the quarter inner panel 2 can be reduced in size by an amount corresponding to the plate 5. Further, along with this, it is possible to reduce the input material required for manufacturing the quarter inner panel 2.

  In the present embodiment, the seat belt retractor 64 is used as a member for supporting the rear seat belt 63, but the present invention is not limited to this, and a seat belt anchor may be used.

  As described above, according to the present embodiment, the plate 5 is joined between the quarter inner panel 2 and the wheel house 3, so that sufficient mounting strength is ensured by the structure that suppresses the complication and the increase in weight. In addition, the movement of the rear seat belt 63 can be prevented.

It is a perspective view showing the state which joined the plate between the quarter inner panel and wheel house which concern on this embodiment. It is II-II arrow sectional drawing of FIG.

Explanation of symbols

1 Vehicle 2 Quarter Inner Panel 3 Wheel House 4 Quarter Outer Panel 6 Wheel House Inner Panel 7 Wheel House Outer Panel 13 Lower Edge 22 Lower Edge 32 Upper Edge 41 Upper Edge 42 Outer Edge 50 Upper Edge 51 Lower Edge 53 Seat belt mounting part (seat belt support member mounting part)
63 Rear seat belt (seat belt)

Claims (1)

A quarter inner panel forming the rear side of the vehicle,
The wheel house inner panel disposed on the lower side of the quarter inner panel and a wheel house outer panel on the outer side in the vehicle width direction, and an upper edge of the wheel house inner panel on the outer side in the vehicle width direction and the wheel A wheel house in which the upper edge of the house outer panel in the vehicle width direction is joined to partition the tire storage space;
A quarter outer panel disposed on the outer side in the vehicle width direction of the quarter inner panel and joined to an upper edge portion of the quarter inner panel and an outer edge portion on the outer side in the vehicle width direction of the wheel house outer panel;
Arranged between the wheel house and the quarter inner panel, joined to a joint portion between the wheel house inner panel and the wheel house outer panel, and a lower edge of the quarter inner panel, and mounting of a seat belt support member A plate having a portion;
A rear side surface structure of a vehicle, comprising:

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