JP5929636B2 - Car luggage compartment structure - Google Patents

Description

  The present invention relates to a molding tray installed in a recess of a vehicle body rear floor panel, a trunk mat that covers the molding tray and forms the bottom surface of the cargo compartment, a side trim that covers the vehicle body rear wheel house and the vehicle body rear side panel and forms a side wall portion of the cargo compartment, The present invention relates to a luggage compartment structure of an automobile including the above.

Conventionally, there is an example shown in FIG.
That is, a vehicle body rear floor panel 82 in which a recess 81 is integrally formed at the center in the vehicle width direction, and a vehicle body rear side that extends in the vehicle front-rear direction on the left and right sides of the vehicle body rear floor panel 82 (only one is shown in the drawing). A frame 83, a vehicle body rear wheel house (not shown) that rises upward on the vehicle exterior side of the vehicle body rear side frame 83, a vehicle body rear side panel 84 that continues to the rear of the vehicle body rear wheel house, and the vehicle body rear floor panel 82 described above. A molding tray 86 having an upper opening accommodating recess 85, a synthetic resin lid member 86A placed on the upper step portion of the molding tray 86, and the lid member 86A. A trunk mat 87 that covers the molding tray 86 from above and forms the bottom surface of the luggage compartment, and is attached to the lower surface of the trunk mat 87. A laminate 88 that is, those having a, a rear side trim 90 which forms the covering luggage compartment side wall portion 89 and the vehicle body rear wheel house and the vehicle body rear side panels 84 of the above from the vehicle interior side.

  The rear side trim 90 is bent into an inverted L shape at a position substantially the same as the upper surface of the laminated plate 88 at the lower portion of the rear side trim 90, and a shelf 90a is integrally formed by the shelf 90a. While the rigidity of the lower part of the rear side trim 90 is improved, the end of the trunk mat 87 in the vehicle width direction is configured to be mounted on the shelf 90a, while the laminated plate 88 mounted on the vehicle body rear floor panel 82 is provided. The vehicle width direction end is terminated slightly inside the vehicle width direction end of the trunk mat 87.

  Further, for the purpose of preventing the interference between the lower end portion 90b of the rear side trim 90 and the vehicle body rear floor panel 82 and preventing the generation of noise due to the contact between both, the lower end portion 90b of the rear side trim 90 is formed from the upper surface of the vehicle body rear floor panel 82. It was configured to be spaced about 10 mm upward and to form a gap g between them.

A configuration in which the rigidity of the rear side frame is improved and the rigidity of the lower vehicle body is increased with respect to the configuration of FIG. 9 is also known.
That is, as shown in FIG. 10, a rear side frame is configured by a rear side frame upper 83A having a hat-shaped cross section and a rear side frame lower 83B having a reverse hat-shaped cross section.
In the configuration of FIG. 10, the vehicle width direction outer side end portion of the vehicle body rear floor panel 82 is sandwiched and fixed by the joint flange portion inside the rear side frame upper 83A and the rear side frame lower 83B, while the vehicle outer side bending portion is fixed. A vehicle floor direction inner side end portion of the rear floor extension panel 91 joined and fixed to the vehicle body rear side panel 84 is sandwiched and fixed by a joint flange portion outside the rear side frame upper 83A and the rear side frame lower 83B.

Further, in the configuration of FIG. 10, for the purpose of reducing the weight of the molding tray, a molding tray 92 made of polystyrene / polyolefin composite resin foam is provided instead of the molding tray 86 made of the resin molded product of FIG. An accommodation recess 93 having an upper opening is formed in the molding tray 92.
Further, in the configuration of FIG. 10, for the purpose of further weight reduction, a synthetic resin board 94 (specifically, a vertical wall member having a periodic shape with upper and lower sheet bodies is used instead of the laminated material 88 of FIG. A thermoplastic synthetic resin board so-called corrugated plastic that is integrally formed with a sandwich is provided (see FIG. 6), and this synthetic resin board 94 is adhered to the lower surface of the trunk mat 87.
In FIG. 10, the same parts as those in FIG. 9 are denoted by the same reference numerals.

Also in the configuration shown in FIG. 10, the end portion of the trunk mat 87 in the vehicle width direction is mounted on the shelf portion 90a below the rear side trim 90, and between the lower end portion 90b of the rear side trim 90 and the upper surface of the rear side frame upper 83A. The structure that prevents the generation of abnormal noise by forming a gap g in the door is the same as the structure shown in FIG. 9, so that the rear side frame upper 83A protrudes upward, and the bottom of the cargo compartment is Increases and decreases cargo space capacity.
In a vehicle having a sufficiently high vehicle height, there is no problem even with the configuration shown in FIG. 10, but due to the vehicle design, in the vehicle where the roof is lowered downward and the rear end of the cargo compartment is lowered as it goes backward, The configuration shown in FIG. 10 has a problem that it is difficult to ensure a sufficient cargo space capacity.

  By the way, Patent Document 1 discloses a structure in which the trim lower end edge and the mat end are not in contact with each other, and Patent Document 2 has a configuration in which the mat end overlaps with the trim lower end edge. Although disclosed, any of the structures disclosed in Patent Documents has the same problem as the conventional structure of FIG. 10 because the lower end of the trim and the floor are not in contact with each other.

JP 2007-8182 A JP 2011-178278 A

  Therefore, the present invention changes the way of thinking, the bottom end of the side trim protrudes in the horizontal direction, and stably settles on the frame upper member, thereby preventing the generation of abnormal noise and Specifically, the rear side frame of the vehicle body has a frame upper portion that protrudes upward from the rear floor panel of the vehicle body in the front-rear direction, and the side trim is inward in the vehicle width direction at the lower part. The trim mat has a width that covers the upper surface of the trim overhang, and the molding tray has a width that covers the upper surface of the trim overhang. It has a tray extension that extends outward in the vehicle width direction and extends toward the vehicle inner side wall of the frame upper member, and the upper surface of the tray extension is flat so that the trunk mat to be laid is flat. By having approximately the same height as the upper surface portion of the projecting overhanging portion, only the trim overhanging portion of the side trim and the trunk mat exist above the frame upper member. The trunk mat end is laid on the trim extension with a predetermined width, so the mat end does not turn up like the conventional structure, and the trunk mat is placed stably. An object is to provide a cargo compartment structure of a car that can be used.

The vehicle luggage compartment structure according to the present invention includes a vehicle body rear floor panel having a recess formed in the center, a vehicle body rear side frame extending in the vehicle front-rear direction on the left and right sides of the rear floor panel, and a vehicle rear side frame. A vehicle body rear wheel house that rises, a vehicle body rear side panel that is continuous with the rear portion of the vehicle body rear wheel house, a molding tray that is installed with its bottom face aligned with a recess of the vehicle body rear floor panel, and has a housing recess in the upper opening, and the molding tray A vehicle luggage compartment structure comprising: a trunk mat that covers a bottom surface of the cargo compartment; and a side trim that covers the vehicle body rear wheel house and the vehicle body rear side panel and forms a sidewall portion of the cargo compartment. Is a frame assembly that protrudes upward from the rear floor panel of the vehicle body in the front-rear direction. Has a member, the side trim has a trim protruding portion that covers the upper surface of the frame upper member with be left tension in a substantially horizontal direction toward the vehicle width direction inner side at the bottom, the trim overhanging And a trunk mat is placed on the upper surface of the substantially overhanging portion of the trim overhanging portion. Rutotomoni have a width covering the upper surface of the trim overhanging portion, the molding tray, with toward the interior side wall portion of the frame upper member extends toward the outside in the vehicle width direction, of the vehicle body rear floor panel has a tray extension portion that is placed on the upper surface, the tray extension portion is projected and the generally horizontal direction in the laid is the trunk mat by cormorants upper SL trim protruding portion to be flat Those having substantially a top surface portion of the same height as the upper surface of the part.
The above-mentioned molding tray is preferably made of a polystyrene / polyolefin composite resin foam that is lightweight and has excellent impact resistance and wear resistance.

According to the above configuration, the upper part of the frame upper member is only the trim overhanging portion of the side trim and the trunk mat, and this makes it possible to reduce the height of the bottom of the cargo compartment and secure the cargo compartment capacity. it can.
Moreover, since the trunk mat end portion is laid on the trim overhanging portion with a predetermined width, the mat end portion does not turn up unlike the conventional structure, and it has a good appearance, and the trunk mat can be stably placed. it can.
Furthermore, since the lower end of the side trim projects substantially horizontally toward the inside in the vehicle width direction and is stably settled on the frame upper member, it is possible to prevent the generation of abnormal noise.
In short, it is possible to achieve both the prevention of abnormal noise generation and the securing of a low position on the bottom surface of the cargo compartment.

  In one embodiment of the present invention, the trim projecting portion has a bent portion that is bent downward in conformity with the frame vertical wall portion on the inner side in the vehicle width direction of the frame upper member, and the bent portion. Has a length close to the vehicle body rear floor panel covering the vertical wall portion of the frame.

According to the above configuration, the lower end portion of the side trim can be contacted and supported not only on the upper surface portion of the frame upper member but also on the corner portion thereof, so that the lower end portion of the side trim can be stably held. it can.
Incidentally, if the lower end portion of the side trim is supported and supported by only a part, a load is applied, which may cause abnormal noise. In this embodiment, the lower end portion of the side trim is connected to the upper surface of the frame upper member. It is possible to stably hold the portion and the corner portion.

In one embodiment of the present invention, a synthetic resin board is affixed to a portion extending between the left and right tray extending portions of the molding tray on the lower surface side of the trunk mat, and the vehicle width of the upper surface portion of the molding tray. It has a step part which matches the outer edge of the said synthetic resin board in the direction inner side part, and mounts and accommodates this.
The above-mentioned synthetic resin board is a thermoplastic synthetic resin board integrally formed with a vertical wall member having a periodic shape between upper and lower sheet bodies as a plate-like material excellent in strength and low mass, so-called, It is preferable to use corrugated plastic.

According to the above configuration, the height of the bottom surface of the luggage compartment can be kept low without extending the synthetic resin board that supports the weight of the load to the upper portion of the frame upper member that does not require this.
Further, by placing and accommodating the above-mentioned synthetic resin board on the step portion of the molding tray, it is possible to prevent the synthetic resin board from being displaced in the planar direction and to keep the trunk mat upper surface portion flat.

  According to the present invention, the vehicle body rear side frame has a frame upper portion that protrudes upward from the vehicle body rear floor panel in the front-rear direction, and the side trim projects in a substantially horizontal direction toward the inside in the vehicle width direction at the lower portion. And a trim overhanging portion that bottoms and covers the upper surface of the frame upper member, the trunk mat has a width that covers the upper surface of the trim overhanging portion, and the molding tray faces outward in the vehicle width direction. It has a tray extension part that extends toward the vehicle inner side wall part of the frame upper member, and the upper surface part of the tray extension part is substantially the same height as the upper surface part of the trim extension part so that the trunk mat to be laid is flat. The upper part of the frame upper member has only the trim overhanging portion of the side trim and the trunk mat. Because the trunk mat end is laid on the trim overhang with a predetermined width, the mat end does not turn up like the conventional structure, and the trunk mat can be placed stably. There is an effect that can be done.

The side view which shows the luggage compartment structure of the motor vehicle of this invention 1 is an enlarged side view of the main part of FIG. Bottom view showing trunk mat and synthetic resin board 1 is a perspective view of the main part shown in FIG. 1 with the molding tray, trunk mat, and synthetic resin board removed. Rear view of rear side trim and molding tray Sectional view showing specific structure of synthetic resin board 1 is a cross-sectional view taken along line AA in FIG. BB sectional view taken on line in FIG. Sectional view showing the structure of a conventional automobile luggage compartment Sectional view showing the structure of a conventional automobile luggage compartment

  Above the frame upper member, there is only a trim overhanging portion of the side trim and a trunk mat, which makes it possible to reduce the height of the bottom of the luggage compartment, and the end of the trunk mat has a predetermined width to the trim overhanging portion. The rear floor panel of the vehicle body having a recessed portion formed in the center for the purpose of stably placing the trunk mat with a good appearance without laying up the mat end as in the conventional structure. A vehicle body rear side frame extending in the vehicle longitudinal direction on the left and right sides of the vehicle body, a vehicle body rear wheel house rising on the vehicle exterior side of the vehicle body rear side frame, a vehicle body rear side panel continuing to the rear portion of the vehicle body rear wheel house, and the vehicle body rear floor panel A molding tray having a bottom surface aligned with the concave portion of the housing and having a housing concave portion with an upper opening, and covering the molding tray A vehicle luggage compartment structure comprising a trunk mat that forms a bottom surface, and a side trim that covers the vehicle body rear wheel house and the vehicle body rear side panel and forms a cargo compartment side wall, wherein the vehicle body rear side frame is A frame upper member projecting upward from the vehicle body rear floor panel over the direction, and the side trim projects in a substantially horizontal direction toward the inside in the vehicle width direction at a lower portion thereof, and is attached to an upper surface portion of the frame upper member. The trunk mat has a width that covers the top surface of the trim overhang, and the molding tray extends outward in the vehicle width direction to extend the frame upper member. It has a tray extension that faces the vehicle inner side wall, and the upper surface of the tray extension is And has substantially the same height as the upper surface portion of the trim overhang portion, was realized by configuration in.

An embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a side view showing the cargo compartment structure, FIG. 2 is an enlarged side view of the main part of FIG. 1, and FIG. 3 is a bottom view showing a trunk mat and a synthetic resin board. 4 is a perspective view of the main part with the molding tray, trunk mat, and synthetic resin board removed from FIG. 1, FIG. 5 is a perspective view of the rear side trim and molding tray, and FIG. 6 shows the specific structure of the synthetic resin board. 7 is a cross-sectional view taken along line AA in FIG. 1, and FIG. 8 is a cross-sectional view taken along line BB in FIG.

1 and 2, a kick-up portion 1 that is continuously inclined to a front low rear height is provided at the rear portion of a vehicle body front floor panel (not shown), and the kick up portion 1 is directed rearward from the upper rear end. The vehicle body rear floor panel 2 (which is the same as the vehicle body rear floor pan and is simply referred to as a rear floor hereinafter) is provided.
A recess 3 having a step-down structure is integrally or integrally formed at the center of the rear portion of the rear floor 2 in the vehicle width direction. On the other hand, as shown in FIGS. A rear side frame 4 extending in the front-rear direction of the vehicle is provided. The drawings other than FIGS. 3 and 5 show the configuration of the luggage compartment structure of the automobile only on the right side of the vehicle, but the left side of the vehicle is substantially symmetrical with the right side of the vehicle.

As shown in FIGS. 7 and 8, the rear side frame 4 includes a rear side frame upper 5 as a frame upper member protruding above the rear floor 2, and a rear side frame lower 6 having a reverse hat shape in cross section. .
As shown in FIG. 7, the rear side frame upper 5 includes a top surface portion 5a and a top surface portion of a portion corresponding to the length range in the vehicle front-rear direction below the rear wheel house 7 (specifically, the rear wheel house inner). A vehicle outer side wall portion 5b rising upward from the vehicle width direction outer side of 5a, a frame vertical wall portion 5c as a vehicle inner side wall portion extending downward from the vehicle width direction inner side of the upper surface portion 5a, and the frame vertical wall portion 5c A joint flange portion 5d extending inward in the vehicle width direction from the lower end, and joining and fixing the vehicle outer side wall portion 5b to the rear wheel house 7 in the vehicle longitudinal direction length range at the bottom of the rear wheel house 7, The end portions on the outer side in the vehicle width direction of the rear floor 2 are sandwiched between the joint flange portions 5d and 6d of the rear side frame upper 5 and the rear side frame lower 6. Te, these three 5d, joined secure the 2,6D, further, the exterior piece of the rear side frame lower 6, is joined and fixed to the lower end of the rear wheel house 7.

  Further, the rear side frame upper 5 described above is formed in a hat shape in cross section as shown in FIG. 8 in the rear part of the lower rear end of the rear wheel house 7, and the rear side frame upper 5 and the rear side frame lower are formed. 6 is sandwiched between the joint flange portions 5d, 6d on the inner side in the vehicle width direction with the outer end in the vehicle width direction of the rear floor 2, and the three sides 5d, 2, 6d are joined and fixed to the rear side. The joint flanges 5e and 6e on the outer side in the vehicle width direction between the frame upper 5 and the rear side frame lower 6 sandwich the end portion on the inner side in the vehicle width direction of the rear floor extension panel 8 in a sandwich shape. , 6e are joined and fixed.

  Here, the rear wheel house 7 is a vehicle body member that rises outside the rear side frame 4, and the above-mentioned rear floor extension panel 8 is joined and fixed to a rear side panel 9 that is continuous with the rear part of the rear wheel house 7. It is. Further, the above-described rear side frame 4 is a vehicle body strength member in which a rear side closed cross section 10 extending in the front-rear direction of the vehicle is formed between a rear side frame upper 5 as an upward convex portion and a rear side frame lower 6 as a downward convex portion. The rear side frame 4 is designed to increase the rigidity of the lower vehicle body, particularly to improve the rear impact strength.

As shown in FIG. 1, a rear end panel 11 is erected and fixed to the rear end portion of the rear floor 2 having the recess 3 so as to close the recess 3 from the rear of the vehicle. The rear end panel 11 is a panel member extending in the vehicle width direction, and a rear end member 12 extending in the vehicle width direction is joined and fixed to an upper front portion of the rear end panel 11, and the rear end member 12 and an upper portion of the rear end panel 11 are connected to each other. A rear end closed cross section 13 extending in the vehicle width direction is formed between them to improve the rear vehicle body rigidity.
A rear bumper (not shown) made of synthetic resin is provided further rearward of the rear end panel 11, and the front side and the upper side of the rear end member 12 are covered with a rear end garnish 14 extending in the vehicle width direction as an interior member.

As shown in FIGS. 1 and 2, a seat cushion (not shown) that forms a seating portion for a rear seat occupant and a backrest surface of the rear seat occupant are formed on the upper portion of the kick-up portion 1 as a vehicle body floor. A rear seat 15 including a seat back 15B and a headrest 15H that holds the head of the rear seat occupant is provided. As shown by the phantom line α in FIG. 1 and the solid line in FIG. 2, the rear seat 15 can be tilted forward, that is, can be tilted forward, around the rotation fulcrum 16 below the seat back 15B. It is a configured rear seat.
The rear seat 15 may be a bench seat, or may be a separate seat in which at least the left seat back and the right seat back are divided into 6: 4.

As shown in FIGS. 1 and 2, the upper surface of the inclined rear end of the kick-up portion 1 is rearwardly extended as a rear seat 15 as a rear seat and projects over the kick-up portion 1 and extends in the vehicle width direction. A rear cross member upper 17 is provided as an upper hat-shaped member.
A rear cross member lower 18 extending in the vehicle width direction is provided on the lower surface of the inclined rear end of the kick up portion 1 so as to face the rear cross member upper 17 in the vertical direction across the kick up portion 1. .

Both of these 17 and 18 are rear cross members (so-called No. 4 cross members) extending in the vehicle width direction, and the upper rear cross member upper 17 is disposed between the left and right rear side frame uppers 5 and 5 in the vehicle width direction. The lower rear cross member lower 18 is stretched between the left and right rear side frame lowers 6 and 6 in the vehicle width direction.
Also, closed cross sections 19 and 20 that overlap in the vertical direction are formed between the rear cross member upper 17 and the upper surface of the kick-up portion 1 and between the rear cross member lower 18 and the lower surface of the kick-up portion 1. In addition, this double closed cross-sectional structure is configured to improve the vehicle body rigidity, in particular, the side impact resistance.

As shown in FIG. 1, FIG. 2, FIG. 5, FIG. 7 and FIG. A tray 25 is provided.
As shown in FIGS. 1 and 2, the front portion of the forming tray 25 is placed on the rear floor 2 behind the rear cross member upper 17, and the height of the upper surface portion 26 a of the rear cross member upper 17. A raised portion 26 that substantially matches the height of the upper surface portion 17a is integrally formed.
The molding tray 25 including the raised portion 26 is made of a polystyrene / polyolefin composite resin foam (so-called foam beads) that is lightweight and has excellent impact resistance and wear resistance.

  Further, as shown in FIGS. 1, 2, 7, and 8, a bottom 27 of the cargo compartment 27 is formed covering the forming tray 25 including the raised portion 26 and the upper portion of the rear cross member upper 17 as the upper hat-shaped member. A trunk mat 28 is provided. The trunk mat 28 has a front end portion set as a free end, and a rear end portion extending rearward until reaching the rear end garnish 14.

Further, as shown in FIGS. 1, 4, 5, 7, and 8, there is provided a rear side trim 30 that covers the rear wheel house 7 and the rear side panel 9 from the vehicle interior side to form a cargo compartment side wall 29. Yes. As shown in a perspective view in FIG. 5, the rear side trim 30 is formed to be continuous with the rear end garnish 14 described above.
As shown in FIGS. 1 and 2, the above-described trunk mat 28 has a front end portion 28a set as a free end portion. When the seat back 15B is erected in the normal seating state as shown in FIG. The front end portion 28a of the mat 28 abuts the lower back of the seat back 15B, and when the seat back 15B is moved forward as shown by the phantom line α in FIG. 1 and the solid line in FIG. 28a has a length that reaches the rear end portion of the seatback 15B that is forward-turned in a plan view, whereby a gap between the seatback 15B that is forward-turned and the raised portion 26, more specifically, the seatback 15B The gap between the rear cross member and the upper member 17 is filled.

  Further, as shown in FIG. 2, at the front lower surface side of the trunk mat 28 corresponding to the mounting position of the rear cross member upper 17, at least a part of the rear cross member upper 17 is in the laid state of the trunk mat 28. A flat synthetic resin board 31 is attached to the region overlapping the upper surface portion 17a.

  As shown in the sectional view of FIG. 6, the above-described flat synthetic resin board 31 is formed by integrally molding a vertical wall member 32 having a periodic shape between upper and lower sheet bodies 33 and 34. As the vertical wall member 32 and the sheet bodies 33 and 34, a thermoplastic resin such as polypropylene (so-called PP) can be used. This synthetic resin board 31 (so-called corrugated cardboard plastic) is a plate-like material excellent in strength and low mass, and is hereinafter abbreviated as the front resin board 31.

  On the other hand, as shown in FIG. 4, at the lower part of the front part of the rear side trim 30, a protrusion 30a protruding inward in the vehicle width direction from the upper end to the lower end is integrally formed. As shown in FIG. 3, concave portions 28b and 28b for avoiding the protrusion 30a are formed in the front side portion.

  As shown in the figure, the front resin board 31 adhered to the front lower surface side of the trunk mat 28 does not extend over the entire width of the trunk mat 28 in the vehicle width direction, and the upper surface portion 17a of the rear cross member upper 17 It is formed to have a length substantially equal to the length in the vehicle width direction.

  As shown in FIG. 2, the front resin mode 31 described above has a front and rear length where the front end portion 31 a is located between the front end portion of the upper surface portion 17 a of the rear cross member upper 17 and the rear end portion of the seat back 15 </ b> B which is tilted forward. And the rear end portion 31b of the front resin board 31 has a front-rear length that terminates in front of the front end portion of the raised portion 26, whereby the front resin board 31 has a length in the front-rear direction. We are trying to optimize it.

  In particular, the front end portion 28a of the trunk mat 28 is formed as a free end portion, and the front resin board 31 is adhered to the lower surface of the front portion of the trunk mat 28, so that the state shown by the phantom line β in FIG. As shown by the solid line in the figure, the front portion of the trunk mat 28 is configured to be stably laid by being attached to the upper surface portion 17a of the rear cross member upper 17 by the weight of the front resin board 31. That is, the front resin board 31 is directly placed on the upper surface portion 17 a of the rear cross member upper 17.

  By the way, as shown in FIG. 7 which is a cross-sectional view taken along line AA in FIG. A trim projecting portion 30b is attached to the upper surface portion 5a and covers the same.

As shown in FIG. 7, the trim projecting portion 30b has a bent portion 30c that is bent downward to match the frame vertical wall portion 5c on the inner side in the vehicle width direction of the rear side frame upper 5 as the frame upper member. The bent portion 30c has a length close to the upper surface of the rear floor 2 so as to cover the frame vertical wall portion 5c from the inner side in the vehicle width direction.
The structures of the trim overhanging portion 30b and the bent portion 30c of the rear side trim 30 are substantially symmetrical, and as shown in FIG. 7, the trunk mat 28 covers the entire top surface of the trim overhanging portion 30b. It has a width in the vehicle width direction.

As shown in FIG. 7, the forming tray 25 installed in the concave portion 3 of the rear floor 2 extends toward the frame vertical wall portion 5 c that is the vehicle inner side wall portion of the rear side frame upper 5 by extending outward in the vehicle width direction. It has an installation part 25a.
The tray extending portion 25a of the forming tray 25 is mounted on the rear floor 2, and the upper surface portion 25b of the tray extending portion 25a is trimmed by the rear side trim 30 so that the trunk mat 28 to be laid is flat. It is formed to have substantially the same height as the upper surface portion of the overhang portion 30b.

  As shown in FIGS. 3, 7, and 8, a synthetic resin board 40 is attached to a portion extending between the left and right tray extending portions 25 a and 25 a of the molding tray 25 on the lower surface side of the trunk mat 28.

Similarly to the front resin board 31, this synthetic resin board 40 is also formed by integrally molding a vertical wall member 32 having a periodic shape between upper and lower sheet bodies 33, 34 (see FIG. 6). As the vertical wall member 32 and the sheet members 33 and 34, a thermoplastic resin such as polypropylene (so-called PP) can be used. This synthetic resin board 40 (so-called corrugated cardboard plastic) is a plate excellent in strength and low mass. Hereinafter, it is abbreviated as a rear resin board 40.
As apparent from the comparison between FIG. 3 and FIG. 5, the resin board 40 is placed and accommodated in the vehicle width direction inner side portion of the upper surface portion of the forming tray 25 so as to match the outer edge of the rear resin board 40 described above. A stepped portion 25c having a step-down structure is formed.

Here, a puncture repair kit such as a jack and other tools or luggage are accommodated in the accommodating recesses 21, 22, 23, and 24 of the molding tray 25 described above, and the upper openings of the plurality of accommodating recesses 21 to 24 are The rear resin board 40 and the trunk mat 28 are covered, and the luggage mat bottom surface 27 is formed by the trunk mat 28.
In the figure, 42 is a lid member that detachably covers an opening 41 (see FIG. 8) formed in the side recess of the rear side trim 30, and 43 is a vehicle width direction at an intermediate position in the longitudinal direction of the recess 3 of the rear floor 2. No. extending to 5 cross members. In the figure, arrow F indicates the front of the vehicle, arrow R indicates the rear of the vehicle, arrow IN indicates the inward in the vehicle width direction, and arrow OUT indicates the outward in the vehicle width direction.

As described above, the cargo compartment structure of the automobile of the above embodiment includes the rear floor 2 in which the concave portion 3 is formed at the center, the rear side frame 4 extending in the vehicle front-rear direction on the left and right of the rear floor 2, and the rear side frame 4 A rear wheel house 7 that rises on the outside of the vehicle, a rear side panel 9 that continues to the rear of the rear wheel house 7, and a recessed portion 3 of the rear floor 2 that is installed with the bottom face aligned with the upper recessed housing recesses 21-24. A forming tray 25, a trunk mat 28 that covers the forming tray 25 and forms the bottom surface 27 of the load chamber, and a rear side trim 30 that covers the rear wheel house 7 and the rear side panel 9 and forms the side wall portion 29 of the load chamber. The rear side frame 4 is a frame projecting upward from the rear floor 2 in the front-rear direction. The rear side trim 30 has a mower member (refer to the rear side frame upper 5), and the lower side trim 30 projects substantially horizontally inward in the vehicle width direction at the lower portion thereof, and the upper surface portion of the frame upper member (refer to the rear side frame upper 5). The trunk mat 28 has a width that covers the upper surface of the trim projecting portion 30b, and the molding tray 25 faces outward in the vehicle width direction. It has a tray extending portion 25a extending and extending toward the vehicle interior side wall portion (see the frame vertical wall portion 5c) of the frame upper member (see the rear side frame upper portion 5) so that the trunk mat 28 to be laid becomes flat. The upper surface portion 25b of the tray extending portion 25a has substantially the same height as the upper surface portion of the trim protruding portion 30b (see FIGS. 7 and 8). ).
The molding tray 25 described above is made of a polystyrene / polyolefin composite resin foam that is lightweight and has excellent impact resistance and wear resistance.

According to this configuration, the upper portion of the frame upper member (see the rear side frame upper 5) is only the trim overhanging portion 30b of the rear side trim 30 and the trunk mat 28, whereby the height of the cargo compartment bottom surface 27 can be lowered. Thus, the cargo space capacity can be secured.
Further, since the end of the trunk mat 28 is laid on the trim projecting portion 30b with a predetermined width, the mat end does not turn up unlike the conventional structure, the appearance is good, and the trunk mat 28 is stably placed. can do.
Furthermore, the lower end portion of the rear side trim 30 projects substantially horizontally toward the inside in the vehicle width direction, and is stably settled on the frame upper member (see the rear side frame upper 5), so that the generation of abnormal noise is prevented. Can do.
In short, it is possible to achieve both the prevention of abnormal noise generation and the securing of a low position on the bottom surface of the cargo compartment.

Further, although no sound insulating material is provided on the rear side frame 4, there is no particular problem even if there is no sound insulating material because the inside of the rear side frame 4 does not become a noise source.
Further, the trim projecting portion 30b has a bent portion 30c which is bent downward in conformity with the frame vertical wall portion 5c on the inner side in the vehicle width direction of the frame upper member (see the rear side frame upper 5), The bent portion 30c covers the frame vertical wall portion 5c and has a length close to the rear floor 2 (see FIG. 7).

According to this configuration, the lower end portion of the rear side trim 30 can be supported not only on the upper surface portion 5a of the frame upper member (see the rear side frame upper portion 5) but also on the corner portion thereof. The lower end can be stably held.
Incidentally, if the lower end portion of the rear side trim is supported and supported by only a part thereof, a load is applied to cause abnormal noise. In this embodiment, the lower end portion of the rear side trim 30 is attached to the frame upper member ( The upper surface 5a and the corners of the rear side frame upper 5) can be stably held.

Further, when the trunk mat 28 is turned when accessing the housing recesses 21 to 24, the upper part of the rear side frame upper 5 as the frame upper member is concealed by the bent portion 30c of the rear side trim 30, so that the appearance is ensured. Can be achieved.
Further, a rear resin board 40 is attached to a portion extending between the left and right tray extending portions 25a of the molding tray 25 on the lower surface side of the trunk mat 28, and an inner side in the vehicle width direction of the upper surface portion 25b of the molding tray 25. The portion has a step portion 25c that matches and matches the outer edge of the rear resin board 40 (see FIG. 7).
The above-mentioned rear resin board 40 is a thermoplastic synthetic resin board integrally formed with a vertical wall member having a periodic shape between upper and lower sheet bodies, as a plate-like material excellent in strength and low mass, Consists of corrugated plastic.

According to this configuration, the height of the bottom surface of the luggage compartment can be kept low without extending the rear resin board 40 that supports the weight of the load to the upper portion of the frame upper member (see the rear side frame upper 5) that does not require this. Can do.
Further, by placing the above-described rear resin board 40 on the stepped portion 25c of the molding tray 25, it is possible to prevent the rear resin board 40 from being displaced in the plane direction and to keep the upper surface of the trunk mat 28 flat. .

In the correspondence between the configuration of the present invention and the above-described embodiment,
The vehicle body rear floor panel of the present invention corresponds to the rear floor 2 of the embodiment,
Similarly,
The vehicle body rear side frame corresponds to the rear side frame 4,
The frame upper member corresponds to the rear side frame upper 5,
The vehicle inner side wall portion corresponds to the frame vertical wall portion 5c,
The car body rear wheel house corresponds to the rear wheel house 7,
The vehicle body rear side panel corresponds to the rear side panel 9,
The side trim corresponds to the rear side trim 30,
The synthetic resin board corresponds to the rear resin board 40,
The present invention is not limited to the configuration of the above-described embodiment.

  As described above, the present invention provides a molding tray installed in the recess of the vehicle body rear floor panel, a trunk mat that covers the molding tray and forms the bottom surface of the luggage compartment, and covers the vehicle body rear wheel house and the vehicle body rear side panel. It is useful for a luggage structure of an automobile having a side trim as a part.

2 ... Rear floor (Body rear floor panel)
3. Recess 4. Rear side frame (car body rear side frame)
5 ... Rear side frame upper (frame upper member)
5c: Vertical frame wall part (inner side wall part)
7 ... Rear wheel house (body rear wheel house)
9 ... Rear side panel (Body rear side panel)
21 to 24 ... accommodation recess 25 ... molding tray 25a ... tray extending part 25b ... upper surface part 25c ... step part 27 ... loading room bottom face 28 ... trunk mat 29 ... loading room side wall part 30 ... rear side trim (side trim)
30b ... Trim overhang 30c ... Bent 40 ... Rear resin board (synthetic resin board)

Claims (3)

A vehicle body rear floor panel having a recess formed in the center,
A vehicle body rear side frame extending in the vehicle longitudinal direction on the left and right sides of the rear floor panel;
A vehicle body rear wheel house that rises outside the vehicle rear side frame,
A vehicle body rear side panel continuous to a rear portion of the vehicle body rear wheel house;
A molding tray that has a bottom face that matches the recess of the vehicle body rear floor panel and has an upper opening accommodating recess;
A trunk mat covering the molding tray and forming the bottom of the cargo compartment;
A vehicle luggage compartment structure comprising a side trim that covers the vehicle body rear wheel house and the vehicle body rear side panel and forms a cargo compartment side wall,
The vehicle body rear side frame has a frame upper member protruding upward from the vehicle body rear floor panel over the front-rear direction thereof.
The side trim has a trim protruding portion that covers the upper surface of the frame upper member with be left tension in a substantially horizontal direction toward the vehicle width direction inner side at its lower
The portion of the trim overhanging portion that extends in a substantially horizontal direction is configured to bottom on the upper surface of the frame upper member,
The trunk mat is placed on the top surface of the portion that extends in the substantially horizontal direction in the trim overhang portion, and has a width that covers the top surface of the trim overhang portion,
The molding tray, together toward the interior side wall portion of the frame upper member extends toward the outside in the vehicle width direction, has a tray extension portion which is mounted on the upper surface of the vehicle body rear floor panel,
And characterized in that said tray extending portion has a substantially top portion of the same height as the upper surface of the projecting portion in the substantially horizontal direction in the upper SL trim overhanging portion cormorants by which the trunk mat is laid is flat Car luggage compartment structure. The trim extension has a bent portion that is bent downward in line with the vertical wall portion of the frame upper member in the vehicle width direction;
The cargo compartment structure for an automobile according to claim 1, wherein the bent portion has a length that covers the vertical wall portion of the frame and is close to the rear floor panel of the vehicle body. A synthetic resin board is attached to a portion extending between the left and right tray extending portions of the molding tray on the lower surface of the trunk mat,
The luggage compartment structure for an automobile according to claim 1 or 2, further comprising a stepped portion that matches the outer edge of the synthetic resin board and places and accommodates the same on the inner side in the vehicle width direction of the upper surface of the molding tray.

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