JP2017087870A - Rear body structure of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a tire support strength and NVH performances of a spare tire pan while suppressing an increase in weight.SOLUTION: A rear body structure of a vehicle comprises a spare tire pan 2 recessed downward with a cross member 24 for reinforcing the spare tire pan 2. The rear body structure of a vehicle is further provided with: a longitudinal member 26 extending to a rear side of the cross member 24 on a lower surface of the spare tire pan 2; and a keyhole-shaped bead 31 disposed at a position overlapping a front part of the longitudinal member 26 in a plan view, and showing a keyhole-like shape in a plan view. Optionally, a tire support bracket 41 is connected to a front part of the keyhole-shaped bead 31.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a rear vehicle body structure including a rear floor panel formed with a spear tire pan recessed downward.

In general, the rear body structure of a vehicle in which a spear tire pan recessed downward is formed in the rear portion of the rear floor panel so that a spare tire can be accommodated. Rigidity (NVH performance) that can suppress surface vibration of the rear floor panel is required so as not to cause this.
For this reason, recently, measures such as reinforcing a spare tire pan by providing a cross member extending in the vehicle width direction on the rear floor panel have been taken.

  However, the front end of a trailing arm that constitutes a part of the rear suspension device is often attached to both ends of the cross member in the vehicle width direction, and vibration may be transmitted from the rear suspension device to the cross member. . In addition, recently, it has become more difficult to satisfy the tire support rigidity and NVH performance described above, for example, because a spare tire pan is provided behind and the cargo space tends to be widened. Various techniques have been proposed in which reinforcing members for reinforcement are added.

  For example, in Patent Document 1, in a rear vehicle body structure including a cross member (5) for attaching a rear suspension that is bonded and fixed to the lower surface of a rear floor (1), the cross member (5) is substantially centered in the vehicle width direction. The center frame (7) extending from the rear part to the rear of the vehicle body and the phosphorus reinforcement (8) extending from the middle part in the front-rear direction of the center frame (7) to one side in the vehicle width direction are bonded and fixed to the lower surface of the rear floor (1). A reinforcing structure for the lower surface of the tire pan is disclosed.

  Further, in Patent Document 2, in a rear vehicle body structure in which a rear floor cross member (45) is provided on the lower surface of a spare tire housing recess (35), the front wall (36) is extended from the bottom (38) of the spare tire housing recess (35). Further, a reinforcing structure for a spare tire housing recess (35) to which a front wall reinforcing member (41) for reinforcing the front wall (36) is attached is disclosed.

  However, when reinforced with a plurality of reinforcing frames as in Patent Document 1, there is a possibility that the weight of the vehicle body may increase, and as in Patent Document 2, only the reinforcement of the upper surface of the front portion of the tire pan improves the NVH performance. Therefore, there is room for further study in order to improve the loading strength of the spare tire pan and the NVH performance while suppressing an increase in weight.

Japanese Utility Model Publication No. 62-43875 Japanese Patent No. 3574091

  Accordingly, an object of the present invention is to improve the tire support strength and NVH performance of a tire pan while suppressing an increase in weight.

  The rear body structure of the vehicle according to the present invention is a rear body structure of a vehicle that includes a spare tire pan that is recessed downward, and is provided with a cross member that extends in the vehicle width direction to reinforce the spare tire pan. A longitudinal member extending rearward of the cross member is provided, and a front rear circular bead having a front rear circular shape in plan view is provided at a position overlapping the front part of the vertical member in plan view.

  According to the above configuration, NVH performance can be improved by improving tire support strength and surface rigidity while suppressing an increase in weight.

  As an aspect of the present invention, a tire support bracket is coupled to a front portion of the front rear circular bead.

  According to the above configuration, the surface rigidity of the spare tire pan can be further improved by providing a closed cross-sectional structure with the tire support bracket and the spare tire pan at the front portion of the front rear circular bead.

  Further, as an aspect of the present invention, a pair of left and right beads are extended radially from the front and rear of the front rear circular bead to the side and the rear side.

  According to the said structure, the connection rigidity of a pair of right and left bead increases, and the surface vibration of a spare tire pan can be suppressed effectively.

  According to this invention, the tire support strength and NVH performance of the tire pan can be improved while suppressing an increase in weight.

Plan view of the rear body structure of the vehicle of this embodiment Bottom view of the rear body structure of the vehicle of this embodiment Longitudinal sectional view of the center part in the vehicle width direction of the rear body structure of the vehicle of this embodiment 1 is a perspective cross-sectional view of the rear body structure of the vehicle as viewed from above with respect to the arrow AA in FIG. 1 is a perspective cross-sectional view of the rear body structure of the vehicle as seen from below with respect to the arrow AA in FIG. The enlarged view and sectional drawing of the principal part of the rear part vehicle body structure of the vehicle of a present Example

An embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a plan view showing the rear body structure of the vehicle, FIG. 2 is a bottom view showing the rear body structure of the vehicle according to the present embodiment, and FIG. 3 is a rear portion of the vehicle according to the present embodiment. FIG. 4 is a perspective cross-sectional view of the rear body structure of the vehicle as viewed from the direction of the arrows AA in FIG. 1, and FIG. FIG. 6A is a perspective cross-sectional view of the rear vehicle body structure as viewed from below with respect to the AA line arrow in FIG. 1, and FIG. 6A is an enlarged plan view showing the front rear circular bead portion of the spare tire pan. (B) is the BB sectional view taken on the line in Fig.6 (a).
In the drawings other than FIG. 3, the pair of left and right rear seats are not shown. Furthermore, in the following embodiments, in the drawings, arrow F indicates the front of the vehicle, arrow LE indicates the left in the vehicle width direction, arrow RI indicates the right in the vehicle width direction, and arrow U indicates the upper side of the vehicle. Show.

  As shown in FIGS. 1 to 5, a rear floor panel 1 (a part of the floor panel) that forms the floor surface of the vehicle body is provided at the rear portion of the vehicle V of the present embodiment. A spare tire pan 2 that is integrally or integrally formed in a concave shape is provided behind the rear floor panel 1 and in the center in the vehicle width direction.

  As shown in FIG. 3, a rear end panel 3 is erected and fixed to the rear end portion of the rear floor panel 1 described above, and a rear end member 4 is joined to the upper front side of the rear end panel 3. A closed cross section 5 extending in the vehicle width direction is formed between the rear end panel 3 and the rear end panel 3.

  As shown in FIGS. 1, 2, 4, and 5, rear side frames 6 and 6 extending in the front-rear direction are provided on the left and right sides of the rear floor panel 1 described above. As shown in FIGS. 4 and 5, the rear side frame 6 has a rear side frame upper 6a and a rear side frame lower 6b, both of which are formed in a hat shape in sectional view, arranged on the upper and lower sides, and the flanges are joined to each other. Thus, a closed cross section 9 extending in the front-rear direction is formed between them.

  1 to 5, a rear cross member 12 (a so-called No. 4 cross member) is provided on the front side of the rear floor panel 1, and the rear floor panel 1 of the rear cross member 12 is provided as shown in FIG. An upper rear cross member 12a is provided on the upper side, and a lower rear cross member 12b is provided on the lower side of the rear floor panel 1 of the rear cross member 12, and the upper rear cross member 12a and the lower rear cross member 12b are provided. Both of them extend in the vehicle width direction and are formed in a hat shape in sectional view. Closed sections 11 and 15 extending in the vehicle width direction are formed between the rear floor panel 1 and the upper rear cross member 12a and between the rear floor panel 1 and the lower rear cross member 12b, respectively (see FIG. 3).

Note that, as shown in FIG. 3, a rear seat 16 is provided in the last row of a plurality of rows of seats arranged in front and rear in the vehicle interior.
The rear seat seat 16 includes a pair of left and right, and a front side portion of the rear seat seat 16 is supported by the upper rear cross member 12a, and a rear side frame upper 6a is provided via a portal-type support member 17 provided at the lower end of the rear end so as to extend in the vehicle width direction. (Not shown). Thus, the rear portions of the pair of left and right rear seats 16 are arranged so as to overhang the spare tire pan 2 (see FIG. 3).

  As described above, the rear floor panel 1 is provided so as to cover the space surrounded by the rear cross member 12, the pair of left and right rear side frames 6, 6, and the rear end member 4 (see FIGS. 1 to 3). A spare tire pan 2 recessed downward is formed in the center of the rear portion of the vehicle so as not to contact the member of the vehicle, and a flat portion 7 extending substantially flat is formed around the spare tire pan 2. (See FIGS. 1 to 5).

  As shown in FIG. 3, the spare tire pan 2 is formed to have a diameter slightly larger than the outer diameter of the spare tire 100 so that the spare tire 100 (temper tire 100) is placed substantially horizontally. The rear floor panel 1 is formed by press molding so as to have a concave shape (truncated cone shape) deeper than the thickness of the spare tire 100.

  As shown in FIGS. 1 to 5, the spare tire pan 2 has a bottom surface portion 21 that extends substantially flat at the center portion of the spare tire pan 2 and a cross section that extends downward from the flat surface portion 7 toward the bottom surface portion 21. And a vertical surface portion 22. The vertical surface portion 22 is formed so that the entire circumference except the rear portion extends obliquely so as to connect the flat surface portion 7 and the bottom surface portion 21 in a cross-sectional view, and at the front portion of the spare tire pan 2, the flat surface portion 7 and the bottom surface portion are formed. Each boundary part with 21 is formed in a gently curved surface (see FIG. 3).

  Further, as shown in FIGS. 1, 2, 4, and 5, the vertical surface portion 22 of the spare tire pan 2 and the outer peripheral edge portion of the spare portion 7 of the flat portion 7 are mainly pressed downward by pressing. A plurality of elliptical reinforcing beads 23 formed so as to protrude from the front are mainly formed on the front side in the circumferential direction of the spare tire pan 2. These reinforcing beads 23 are provided to increase the rigidity of the spare tire pan 2, that is, the rigidity of the rear floor panel 1. Each of the reinforcing beads 23 extends from the bottom surface portion 21 to the flat surface portion 7 in the inclination direction of the vertical surface portion 22, that is, the diameter of the spare tire pan 2. It extends in the direction and is formed side by side along the circumferential direction in plan view (see FIGS. 1, 2, 4, and 5).

  As shown in FIGS. 2, 3, and 5, the rear floor panel 1 includes a cross member 24 formed in a cross-sectional hat shape extending across the entire vehicle width direction so as to straddle the front portion of the spare tire pan 2. The cross member 24 is formed in a curved shape at the center thereof in accordance with the downward bulging shape of the front portion of the spare tire pan 2 recessed downward, and constitutes a closed section 61 with the lower surface of the rear floor panel 1. Are fixedly joined to the lower surface of the rear floor panel 1 (see FIG. 3). Further, as shown in FIGS. 2 and 5, both ends of the cross member 24 are joined and fixed to the pair of left and right rear side frames 6 and 6 (rear side frame lower 6b).

At both ends of the cross member 24 in the vehicle width direction, as shown in FIGS. 2 and 5, arm support portions 25 on which front end portions of trailing arms that support a rear suspension device (not shown) are pivotally mounted are configured. Has been.
In the present embodiment, the arm support portions 25 are configured at both ends of the cross member 24 in the vehicle width direction. However, the cross member 24 is not limited to the arm support portions 25 and may be configured as a damper support portion or the like. Or the structure which does not comprise these support parts may be sufficient.

  Further, as shown in FIGS. 2 to 5 and FIG. 6B, the rear floor panel 1 passes the center portion of the spare tire pan 2 in the vehicle width direction rearward from the center portion of the cross member 24 in the vehicle width direction. Thus, the vertical member 26 extending in the front-rear direction to the rear portion of the bottom surface portion 21 is formed, and the vertical member 26 is formed in a cross-sectional hat shape, and the spare tire is configured so as to form the lower surface of the spare tire pan 2 and the closed cross-section 62. It is bonded and fixed to the lower surface of the pan 2 (see FIGS. 3 to 5 and FIG. 6B).

  As shown in FIG. 2, a wide portion 27 that bulges outward in both the vehicle width direction and forms a wide arc is formed at a position slightly ahead of the substantially middle portion of the longitudinal member 26 extending in the front-rear direction. Has been. A passing portion of the front rear circular bead 31, which will be described later in plan view, in the front-rear direction of the vertical member 26 is formed to correspond to the front rear circular bead 31 (see the figure).

  Specifically, as shown in FIGS. 2, 6A, and 6B, the front side portion of the wide member 27 of the vertical member 26 is the inner vertical wall portion 36 of a pair of left and right linear beads 33 described later. , 36 so as to overlap in plan view, and the wide portion 27 is formed so as to overlap between inner vertical wall portions 36, 36 of a pair of left and right arc-shaped beads 32 described later in plan view. ing.

  As shown in FIGS. 1, 3 and 4, the front portion of the upper surface of the spare tire pan 2 formed in a cross-sectional hat shape extending in the front-rear direction at the center portion in the vehicle width direction and the front side portion of the bottom surface portion 21. A reinforcing member 28 is provided.

  The front reinforcing member 28 is connected to the center portion in the vehicle width direction of the cross member 24 joined to the lower surface of the spare tire pan 2 and the front end of the vertical member 26 extending in the front-rear direction via the spare tire pan 2. That is, it joins with the upper surface of the spare tire pan 2 so that it may overlap in planar view, and the upper surface of this spare tire and the closed cross section 63 are comprised (refer FIG. 3).

  In addition, as shown in FIGS. 1 and 3 to 6, a circular portion in a plan view is provided at a substantially central position on the bottom surface portion 21 of the spare tire pan 2, that is, a position overlapping the front portion of the vertical member 26 in a plan view. A forward rear circular bead 31 projecting upward is formed in a front rear circular shape in plan view by combining a projecting portion projecting in a substantially rectangular shape from the front portion of the circular portion.

  As shown in FIG. 1 and FIG. 6A, the front rear circular bead 31 includes a pair of left and right arc-shaped beads 32 at a rear portion thereof, and a linear bead 33 provided with a pair of left and right fronts of the arc-shaped bead 32. The front ends of the pair of left and right linear beads 33 are integrally formed with a front end connecting bead 34 that connects the front ends of the linear beads 33 in the vehicle width direction.

  As shown in FIG. 6A, the pair of left and right arc-shaped beads 32 are formed in an arc shape that forms both left and right sides of a circle in plan view. The pair of left and right linear beads 33 are linearly extended forward in the same length so as to be continuous from the front end portions of the left and right arc-shaped beads 32 and are parallel to each other at the front end portions of the arc-shaped beads 32. They are integrally formed (see the figure).

  As described above, the front rear circular bead 31 is raised upward with respect to the bottom surface portion 21 of the spare tire pan 2, and therefore, an outer vertical wall portion 35 is formed on the outer peripheral edge thereof, and the inner periphery thereof is formed. An inner vertical wall portion 36 is formed on the edge (see the figure).

The outer vertical wall portion 35 and the inner vertical wall portion 36 are each formed to be an arc-shaped ridge line in the arc-shaped bead 32 and to be a linear ridge line extending in the front-rear direction in the linear bead 33. The front end connecting bead 34 is formed to be a straight ridge line extending in the vehicle width direction.
The outer vertical wall portion 35 is integrally formed so that the outer ridge lines of the arc-shaped bead 32, the linear bead 33, and the front end connecting bead 34 are continuous, and the inner vertical wall portion 36 is formed of the arc-shaped bead 32. The inner ridge lines of the linear bead 33 and the front end connecting bead 34 are integrally formed so as to be continuous.

  As shown in FIGS. 1, 3 to 5, and 6 (b), a tire support bracket 41 is provided at a substantially central portion of the upper surface of the spare tire pan 2, that is, at a front portion of the front rear circular bead 31. Are combined.

  As shown in FIGS. 6A and 6B, the tire support bracket 41 is integrally formed by a tire support bracket main body 42 and a flange 43 provided on the outer periphery of the tire support bracket main body 42. It is supported by the left and right linear beads 33, 33 and the front end connecting beads 34, and is fastened to the upper surfaces of the left and right linear beads 33, 33 by bolts B and nuts (not shown) (FIG. 6A). reference). That is, as shown in FIGS. 4, 5, and 6 (b), the tire support bracket 41 is in an attached state that spans between a pair of left and right linear beads 33 that protrude upward.

  As a result, a closed cross section 63 is formed at the front portion of the front rear circular bead 31 in the spare tire pan 2 by the left and right linear beads 33, the bottom surface portion 21 therebetween, and the tire support bracket 41 (FIG. 6). (See (b)).

  Here, as shown in FIG. 3, when the spare tire 100 is accommodated in the spare tire pan 2, the approximate center of the wheel portion 101 of the spare tire 100 is the tire support bracket 41 of the bottom surface portion 21 of the spare tire pan 2. Located at the binding site.

  For this reason, the tire support bracket main body 42 is formed with a screw hole 44a (see FIG. 6B) that is screwed with the tip of the thumbscrew 49 that is inserted into the opening 101a at the approximate center of the wheel portion 101 of the spare tire 100. The spare tire 100 is fixed to the tire support bracket 41 by the thumbscrew 49. In the drawings other than FIG. 3, the spare tire 100 is not accommodated in the spare tire pan 2.

  Furthermore, as shown in FIGS. 1, 2, and 4 to 6, the spare tire pan 2 includes a pair of left and right radial beads extending radially from the front and rear of the front rear circular bead 31 to the side and the rear side. 51 (51F, 51R) is provided projecting downward.

  As shown in FIG. 1, the radial beads 51 include a front radial bead 51 </ b> F that extends linearly slightly rearward from the front end of the linear bead 33 toward the outside in the vehicle width direction, and a rear end of the arc-shaped bead 32. A rear radial bead 51R that extends slightly outward from the vehicle width direction and then bends and extends linearly toward the rear in the vehicle width direction (diagonally rearward).

Thereby, the front radial bead 51F and the rear radial bead 51R are connected in the front-rear direction on the left and right sides by the outer vertical wall portion 35 of the front rear circular bead 31 (FIGS. 1 and 6A). reference).
Specifically, the front radial bead 51F and the rear radial bead 51R include an arc-shaped bead outer vertical wall portion 35a that forms the outer vertical wall portion 35 of the arc-shaped bead 32, and an outer vertical wall portion 35 of the linear bead 33. It connects with the linear bead outer side vertical wall part 35b to form (refer Fig.6 (a)).
The front radial beads 51F and the rear radial beads 51R extend to the boundary between the vertical surface portion 22 and the flat surface portion 7 of the spare tire pan 2 (see FIGS. 1, 2, 4, and 5). .

  The rear vehicle body structure of the vehicle of this embodiment described above includes a spare tire pan 2 recessed downward, and a cross member 24 extending in the vehicle width direction for reinforcing the spare tire pan 2 is provided (FIGS. 2 and 3). 5), a vertical member 26 extending rearward of the cross member 24 is provided on the lower surface of the spare tire pan 2 (see FIG. 5), and the front rear circle in plan view is located at a position overlapping the front portion of the vertical member 26 in plan view. It is set as the structure which provided the front rear circular bead 31 which carried out the shape (refer FIGS. 1-5, FIG. 6 (a), FIG.6 (b)).

  According to the above configuration, it is possible to improve NVH performance by suppressing tire weight and improving tire support strength and surface rigidity.

  Specifically, the front rear circular bead 31 has a front rear circular shape in plan view in which the linear straight bead 33 and the curved arc-shaped bead 32 are integrally connected in the front-rear direction (FIGS. 1 and 6 (a)). ))), For example, a complicated shape can be obtained as compared with a bead formed only in a circular shape or a linear shape in plan view.

  Moreover, the arc-shaped bead 32 reinforces the peripheral portion of the pair of left and right linear beads 33, 33 reinforced by the tire support bracket 41 in the spare tire pan 2 without forming a corner portion where stress tends to concentrate. Will do.

  Therefore, by providing such a front rear circular bead 31 on the lower surface of the spare tire pan 2 at a position overlapping the front portion of the vertical member 26 extending rearward of the cross member 24 in plan view (FIGS. 1 to 5, NVH performance can be improved by improving tire support strength and surface rigidity.

  In addition, by forming the front rear circular bead 31 at a substantially central portion of the spare tire pan 2, the spare tire is compared with a case where a reinforcing member is added while firmly reinforcing the substantial center of the spare tire pan 2. An accommodation space for the spare tire 100 in the pan 2 can also be secured.

  As an aspect of the present invention, a tire support bracket 41 is coupled to a front portion of a front rear circular bead 31 (see FIGS. 1, 3 to 6 (a), (b)).

  That is, in the present embodiment, the front rear circular bead 31 is provided with a pair of left and right linear beads 33, 33 extending in the front-rear direction in parallel with each other at the front portion thereof. Since the tire support bracket 41 is mounted so as to be bridged between the three (see FIGS. 4, 5, and 6B), a pair of left and right linear beads 33, the bottom portion 21 of the spare tire pan 2 between them, In addition, the tire support bracket 41 can have a closed section 63 (see FIG. 6B).

  Therefore, the strength of this portion can be further increased, and the tire support strength and the surface rigidity can be further improved.

  Further, as an aspect of the present invention, a front radial bead 51F extending from the front part of the front rear circular bead 31 to both outer sides in the vehicle width direction, and a rear part from the rear part of the front rear circular bead 31 to the vehicle width direction outer side (diagonally rearward). A rear radial bead 51R extending linearly is provided (see FIGS. 1, 2, 4, 5, 6A, and 6B).

  That is, the front radial bead 51F extends outward in the vehicle width direction from the front end of the linear bead 33 (see the same figure), and the rear radial bead 51R extends from the rear end of the arc-shaped bead 32 outward in the vehicle width direction. (See FIGS. 1 and 2). Here, the front rear circular bead 31 is integrally formed so that the arc-shaped bead 32, the front end of the arc-shaped bead 32, and the rear end of the linear bead 33 are continuous on the left and right, respectively, and the front radial bead 51F. And the rear radial bead 51R are connected in the front-rear direction by the front rear circular bead 31 having a continuous complex shape combining the linear shape and the curved shape in this way (see FIG. 6A). The surface vibration of the spare tire pan 2 can be further effectively suppressed.

  Moreover, in this embodiment, the vertical member 26 is provided on the lower surface of the spare tire pan 2 so as to overlap the cross member 24 extending in the vehicle width direction and the front rear circular bead 31 in plan view ( 2 to 5 and 6B), the load applied to the front rear circular bead 31 from the spare tire 100 placed on the spare tire pan 2 is effectively applied to the cross member 24 side via the vertical member 26. It is possible to improve the tire support rigidity and increase the connection rigidity between the cross member 24 and the front rear circular bead 31 to effectively suppress the surface vibration of the spare tire pan 2. .

More specifically, in general, the replacement target tire 200 (see FIG. 3) that is provided as standard on the vehicle body is often larger in size and weight than the spare tire 100 (temper tire 100). Such a replacement target tire 200 cannot be entirely accommodated even if it is stored in the spare tire pan 2 after replacement with the spare tire 100. For example, the replacement target tire 200 indicated by a virtual line in FIG. In this manner, the spare tire pan 2 may be placed in a standing state on the bottom surface portion 21.
In this case, the load from the replacement target tire 200 is concentrated around the front rear circular bead 31.

  However, in the present embodiment, as described above, the center portion of the bottom surface portion 21 is reinforced by the front rear circular bead 31 and is connected to each of the cross member 24 and the front rear circular bead 31, that is, By providing the vertical member 26 on the lower surface of the spare tire pan 2 so as to overlap in a plan view, the load from the tire 200 to be replaced can be effectively transmitted to the cross member 24 via the vertical member 26. The tire support load can be improved.

  In addition, in the present embodiment, as described above, the front rear circular bead 31 is formed at the center of the bottom surface portion 21 of the spare tire pan 2 and is vertically connected to the front rear circular bead 31. By extending the member 26 or forming the front radial bead 51F and the rear radial bead 51R, the entire spare tire pan 2 can be effectively reinforced with such minimum necessary reinforcement. An increase in weight of the entire bread 2 can be suppressed.

  In addition, since the vertical member 26 is provided on the lower surface of the spare tire pan 2, the vertical member 26 does not narrow the space for accommodating the spare tire 100 in the spare tire pan 2.

  Further, as described above, the rear portions of the pair of left and right rear seats 16 are disposed so as to overhang from the front to the rear above the spare tire pan 2 (see FIG. 3). For this reason, the spare tire 100 is accommodated so as to be inserted into a space between the bottom surface portion 21 and the rear portion of the rear seat above the front portion of the spare tire pan 2, and at that time, it is necessary to support the spare tire 100. Since the front reinforcing member 28 is provided at the front center of the bottom surface portion 21, the front center of the bottom surface portion 21 can be firmly reinforced by the front reinforcing member 28.

  In addition, since the front reinforcing member 28 is provided from the upper surface side in the center of the front portion of the bottom surface portion 21 of the spare tire pan 2, the spare tire 100 is disposed between the bottom surface portion 21 and the rear seat rear portion above the front portion of the spare tire pan 2. When being inserted and accommodated in the space between them, it can be utilized as a guide member that guides from the bottom surface portion 21 to the longitudinal surface portion 22 provided forward, and the spare tire 100 is located in the space between the bottom surface portion 21 and the rear portion of the rear seat 16. Can be inserted smoothly.

  In the correspondence between the configuration of the present invention and the above-described embodiment, the bead of the present invention corresponds to the radial bead 51 of the present embodiment, but the present invention is not limited to the configuration of the above-described embodiment. Absent.

  As described above, the present invention is useful for a rear vehicle body structure including a rear floor panel in which a spare tire pan recessed downward is formed.

2. Spear tire pan 24 ... Cross member 26 ... Vertical member 31 ... Front rear circular bead 41 ... Tire support bracket 51 (51F, 51R) ... Radial bead (bead)

Claims (3)

A vehicle body structure for a rear portion of a vehicle provided with a spear tire pan recessed downward and provided with a cross member extending in the vehicle width direction for reinforcing the spare tire pan,
A vehicle having a configuration in which a longitudinal member extending rearward of the cross member is provided on the lower surface of the tire tire pan, and a front rear circular bead having a front rear circular shape in plan view is provided at a position overlapping the front portion of the vertical member in plan view. Rear body structure. The vehicle rear body structure according to claim 1, wherein a tire support bracket is coupled to a front portion of the front rear circular bead. The rear body structure of the vehicle according to claim 1 or 2, wherein a pair of left and right beads extend radially from the front and rear of the front rear circular bead to the side and the rear side.

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