JP2008254604A - Vehicle body rear part structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle body rear part structure which increases a body rigidity while leaving an opening of a sufficient area between right and left rear wheels and a rear parcel shelf. <P>SOLUTION: A rear parcel shelf 10 is formed in a substantially L-shaped section having a base wall 11 extending in a substantially horizontal direction and a longitudinal wall 12 extending downwardly from a front end of the base wall 11. The longitudinal wall 12 is formed in an arch shape, and a reinforcing flange 13 is formed on a lower edge of the longitudinal wall 12. A reinforcing member 30 for forming a closed section together with corners of the base wall 11 and the longitudinal wall 12 is joined with a back side of the rear parcel shelf 10. Lower edges on both sides of the vehicle width direction of the longitudinal wall 12 of the rear parcel shelf 10 are coupled to ridge parts a of right and left rear wheel houses 6A, 6B, and the ridge parts a of the rear wheel houses 6A, 6B are coupled to rear frames 5A, 5B. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a rear structure of a vehicle body provided with a rear parcel shelf that vertically partitions a vehicle compartment and a trunk room behind a rear seat.

  In a sedan type vehicle equipped with a trunk room, a rear parcel shelf is disposed at the rear of the rear seat. The rear parcel shelf is installed between damper support portions that extend from the tops of the rear wheel houses on the left and right sides of the vehicle.

As such a sedan-type vehicle rear structure, a structure in which the opening formed by the left and right rear wheel houses and the rear parcel shelf is closed by a plate-like member, thereby improving the body rigidity is known ( Patent Document 1). In this vehicle body rear structure, a plurality of plate-like members are continuously welded to each other, and the side edges of the welded plate-like members are welded to the side surfaces of the left and right rear wheel houses.
JP 2006-160031 A

  However, in this conventional vehicle body rear structure, since the opening formed by the left and right rear wheel houses and the rear parcel shelf is closed by a plate-like member, a so-called trunk through structure that enables communication between the vehicle interior and the trunk room is provided. Cannot be adopted, and the side edge portion of the plate-like member is supported by the side surface of the rear wheel house where it is difficult to improve the rigidity, so that it is difficult to sufficiently improve the body rigidity.

  Therefore, the present invention is intended to provide a vehicle body rear structure capable of improving body rigidity while leaving an opening having a sufficient area between the left and right rear wheel houses and the rear parcel shelf.

  According to the first aspect of the present invention for solving the above-described problem, the rear parcel shelf (for example, the rear parcel shelf 10 in the embodiment described later) is a rear wheel house on the left and right of the vehicle (for example, the rear wheel house 6A in the embodiment described later). 6B), the rear parcel shelf is constructed with a base wall extending in a substantially horizontal direction (for example, a base wall 11 in an embodiment described later), and a front end of the base wall. Formed in a substantially L-shaped cross section with a vertical wall (for example, a vertical wall 12 in an embodiment described later) extending downward from the section, and the vertical wall extends downward from the center in the vehicle width direction toward both side ends. A reinforcing flange that is formed into an arch shape with an increased extension length and bends substantially perpendicularly to the lower edge of the vertical wall (for example, a reinforcing flange 13 in an embodiment described later) A reinforcing member (for example, a reinforcing member 30 in an embodiment described later) that forms a closed section together with the corners of the base wall and the vertical wall is joined to the rear surface of the rear parcel shelf, and the vertical wall of the rear parcel shelf is joined. The lower edges of both sides in the vehicle width direction are coupled to the ridge line portions of the rear wheel house on the left and right sides of the vehicle (for example, the ridge line portion a in the embodiment described later), and the ridge line portions of the rear wheel house are connected to the rear frame (for example, described later) It is characterized by being coupled to the rear frames 5A and 5B) in the embodiment.

  Thus, the rear parcel shelf forms a closed cross-sectional structure extending in the vehicle width direction together with the reinforcing member, and the rigidity of the lower edge of the vertical wall is enhanced along the arch shape by the reinforcing flange. And since the lower edge of the both ends of the vertical wall in the vehicle width direction is coupled to the rear frame via the ridge line portion of the rigid rear wheel house, the shape of the rear parcel shelf is held by the rear frame.

  According to the first aspect of the present invention, the upper portion of the rear parcel shelf forms a closed section together with the reinforcing member, the lower edge of the vertical wall is reinforced by the reinforcing flange, and both ends of the ridge line portion of the rear wheel house having high rigidity are provided. Therefore, the body rigidity can be improved efficiently while leaving an opening having a sufficient area between the left and right rear wheel houses and the rear parcel shelf.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following description, unless otherwise specified, “up”, “down”, “front”, and “rear” refer to the top, bottom, front, and back of a vehicle facing in the forward direction.

  FIG. 1 and FIG. 2 are a view of a sedan-type vehicle 1 that employs a vehicle body rear structure according to the present invention cut back and forth, and a rear view of the cut vehicle 1 viewed obliquely from above and a front view. is there. 3 is a perspective view in which the body outer panel 2, the roof panel 3, the floor panel 4 and the like are removed from the vehicle 1 of FIG. 1, FIG. 4 to FIG. 7 are cross-sectional views of FIG. 2, and FIG. FIG.

  As shown in FIGS. 1 to 3, a pair of rear frames 5 </ b> A and 5 </ b> B that are substantially along the front-rear direction of the vehicle body are disposed on the left and right sides below the rear portion of the vehicle 1. The ends are connected to each other by a middle cross member 35 and a rear cross member 36 (see FIGS. 4 to 7). Rear wheel houses 6A and 6B are provided on the left and right sides of the rear part of the vehicle body to cover the upper half of the outer periphery of the left and right rear wheels (not shown). Damper houses 7A and 7B that support an upper portion of a suspension (not shown) are integrally provided. Each rear wheel house 6A, 6B is provided with a substantially arc-shaped ridge line portion a along the inner corner in the vehicle width direction of the rear wheel.

  In addition, a rear parcel shelf 10 that divides the rear portion in the vehicle compartment 8 and the interior of the trunk room 9 substantially vertically is provided between the upper ends of the left and right damper houses 7A and 7B on the rear side of the rear seat (not shown).

  The rear parcel shelf 10 includes a base wall 11 that extends substantially horizontally toward the rear end of the vehicle body on the upper side of the damper houses 6A and 6B, and a vertical wall 12 that extends downward from the front end of the base wall 11. As shown in FIG. 3, a substantially L-shaped reinforcing member 30 that forms a closed section together with the corners of the base wall 11 and the vertical wall 12 is joined to the back surfaces of the base wall 11 and the vertical wall 12. ing. The closed cross section of the rear parcel shelf 10 and the reinforcing member 30 extends along the vehicle body width direction so as to connect the upper ends of the left and right damper houses 6A and 6B.

  The vertical wall 12 of the rear parcel shelf 10 is formed in an arch shape that extends downward from the approximate center in the vehicle body width direction toward both side parts. It joins to each ridgeline part a of rear wheel house 6A, 6B. The ridge line portions a of the left and right rear wheel houses 6A and 6B are joined to the left and right rear frames 5A and 5B at the front and rear ends, respectively. Note that the front end portion of the ridge line portion a of the rear wheels 6A and 6B may be joined to the middle cross member 35. Further, as shown in an enlarged view in FIG. 6, a reinforcing flange 13 bent continuously at a substantially right angle is formed on the lower edge of the vertical wall 12 having an arch shape. An opening 14 is formed at each of the upper edge portions of the left and right sides of the vertical wall 12, and a similar reinforcing flange 15 is also formed around each opening 14.

  4-7, 37 is an upper cross member arrange | positioned along the vehicle width direction on the upper surface side of the floor panel 4, 38 is a damper frame which supports a suspension, 39 is It is a damper base cover that hides the rear part.

  Further, the floor panel 4 is continuous from the trunk room 9 to the inside of the passenger compartment 8, and a trunk is provided between the side walls 6 a and 6 a of the left and right rear wheel houses 6 A and 6 B and the vertical wall 12 of the rear parcel shelf 10. A through opening 40 is formed. The upper side of the opening 40 is formed in an arch shape (arc shape) by the rear parcel shelf 10, but the width between the side walls 6a and 6a of the rear wheel houses 6A and 6B on both sides is used at the lower side. For this reason, by tilting the rear seat (not shown) forward, even a wide and long baggage L as indicated by a chain line in FIG. 2 can be loaded on the vehicle 1 with a margin through the opening 40.

  As described above, in the vehicle body rear structure of the vehicle 1, the rear parcel shelf 10 forms a closed cross section that extends in the vehicle width direction together with the reinforcing member 30, and the lower edge of the vertical wall 12 of the rear parcel shelf 10 is substantially the same. Since the reinforcing flange 13 bent at a right angle is reinforced along the arch shape, the rigidity of the rear parcel shelf 10 itself is greatly enhanced. In the rear parcel shelf 10, the lower edges of both side ends of the vertical wall 12 are coupled to the ridge line portions a of the rigid rear wheel houses 6A and 6B, and the end portions of the ridge line portions a are rear frames that are frame members. It is joined to 5A and 5B.

Therefore, in this rear structure of the vehicle body, the rear parcel shelf 10 can efficiently increase the body rigidity while the opening 40 having a sufficient area is secured between the left and right rear wheel houses 6A and 6B and the rear parcel shelf 10. Can do.
In particular, in this rear structure of the vehicle body, since a separate reinforcing member is not installed on the vertical wall 12 of the rear parcel shelf 10 from the floor side, the width near the bottom of the opening 40 is set between the rear wheel houses 6A and 6B. Can be greatly expanded to the width of.

  In the case of this embodiment, the openings 14 are formed on the left and right upper sides of the vertical wall 12 of the rear parcel shelf 10, and the bent reinforcing flanges 13 are provided in the respective openings 14. The upper edges of the left and right vertical walls 12 can be efficiently reinforced by the reinforcing flange 13 without incurring.

  In addition, this invention is not limited to said embodiment, A various design change is possible in the range which does not deviate from the summary.

The one which shows one Embodiment of this invention, and the figure which looked at the vehicle body cut | disconnected forward and backward toward diagonally back side. The figure which shows the same embodiment and looked at the vehicle body cut | disconnected forward and backward toward the back side. The perspective view of the principal part which shows the same embodiment. Sectional drawing corresponding to the AA cross section of FIG. 2 which shows the same embodiment. Sectional drawing corresponding to the BB cross section of FIG. 2 which shows the same embodiment. Sectional drawing corresponding to CC cross section of FIG. 2 which shows the same embodiment. Sectional drawing corresponding to the DD cross section of FIG. 2 which shows the same embodiment. FIG. 4 is an enlarged view of a part of FIG. 3 showing the embodiment.

Explanation of symbols

5A, 5B ... Rear frame 6A, 6B ... Rear wheel house 10 ... Rear parcel shelf 11 ... Base wall 12 ... Vertical wall 13 ... Reinforcement flange 30 ... Reinforcement member a ... Ridge line part

Claims (1)

The rear parcel shelf is a rear structure of the vehicle body that is erected on the upper part of the left and right rear wheel houses of the vehicle,
The rear parcel shelf,
Formed in a substantially L-shaped cross section comprising a base wall extending in a substantially horizontal direction and a vertical wall extending downward from the front end of the base wall;
The vertical wall is formed in an arch shape that extends downward from the vehicle width direction center toward both side ends, and a reinforcing flange that is bent substantially perpendicularly to the lower edge of the vertical wall is formed,
A reinforcing member that forms a closed cross-section with the corners of the base wall and the vertical wall is joined to the rear surface of the rear parcel shelf,
A rear part of a vehicle body characterized in that lower edges of both sides in the vehicle width direction of the vertical wall of the rear parcel shelf are coupled to ridge lines of the rear wheel house on the left and right sides of the vehicle, and a ridge line of the rear wheel house is coupled to a rear frame. Construction.

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