JP5837911B2 - Body structure - Google Patents

Description

  The present invention relates to a vehicle body structure including a partition wall portion between a passenger compartment and a load storage portion.

2. Description of the Related Art Conventionally, there has been known a vehicle body structure in which a member such as a reinforcing bar is provided in a partition wall portion between a passenger compartment and a load storage portion for the purpose of reinforcing the rear portion of the vehicle body.
For example, the partition part disclosed in Patent Document 1 includes a slat tower bar installed on the rear wall part of a pair of slat towers located in the load storage part, an upper end part fixed to the slat tower bar, and a lower end part. And a pair of left and right vertical bars fixed to the floor panel of the load storage unit, and a horizontal bar provided between the pair of vertical bars and having both ends fixed to the pair of vertical bars.

JP 7-267144 A

  It is desired that such a partition wall portion can surely ensure rigidity and strength so that it can cope with torsion of the vehicle body.

  Then, an object of this invention is to provide the vehicle body structure which can improve the rigidity and intensity | strength of a partition part.

The vehicle body structure according to claim 1 of the present invention has a partition wall portion disposed between a passenger compartment (for example, the passenger compartment 2 of the embodiment) and a load storage portion (for example, the load storage portion 3 of the embodiment). (For example, the partition wall portion 8 of the embodiment), and a side frame that is disposed on both sides in the vehicle width direction and extends substantially along the vehicle body front-rear direction (for example, the rear side frame 4 of the embodiment), The partition wall portions extend substantially along the vehicle width direction, and both end portions in the vehicle width direction are respectively supported by members (for example, the vertical frame 9 of the embodiment) disposed at both ends of the partition wall portion in the vehicle width direction. A first partition bar (for example, the first partition bar 21 of the embodiment) and a lower side of the first partition bar, extending substantially along the vehicle width direction, and both ends in the vehicle width direction of the partition wall 2nd space | interval each supported by the member arrange | positioned at the both ends of a vehicle width direction A bar (for example, the second partition bar 22 of the embodiment) and the upper end portion provided between the first partition bar and the second partition bar are fixed to the first partition bar, and the lower end portion is A partition plate (for example, the partition plate 23 of the embodiment) fixed to the second partition bar, a vertical frame (for example, the vertical frame 9 of the embodiment) extending substantially along the vertical direction on the upper side of the side frame, A floor cross member (for example, the floor cross member 12 according to the embodiment) extending substantially along the vehicle width direction on the upper side of the floor panel (for example, the passenger room floor panel 6 or the cargo floor panel 7 of the embodiment). Both ends of the first partition bar in the vehicle width direction are fixed to the vertical frame, both ends of the cross member on the floor in the vehicle width direction, and both ends of the second partition bar in the vehicle width direction. And before Characterized in that it is fixed to the upper wall of the side frame.

Thus, the partition wall portion is provided with a planar partition plate between the rod-shaped first partition bar and the second partition bar, which are respectively supported by members disposed at both ends of the partition wall in the vehicle width direction. With such a configuration, the rigidity and strength of the partition wall can be increased. Thereby, the rigidity and strength of the vehicle body can be secured, and in particular, the torsional rigidity can be imparted to the vehicle body.
In addition, by providing a partition plate between the passenger compartment and the load storage portion, it is possible to prevent the load loaded in the load storage portion from moving to the passenger compartment at the time of a collision.

In addition, the first partition bar on the upper side of the partition wall and the second partition bar on the lower side are fixed to members (side frames and vertical frames) that form the skeleton of the vehicle body, so that the upper and lower sides of the partition wall In this case, sufficient rigidity and strength can be ensured, and a structure having no bias in rigidity and strength can be obtained.
In addition, since the first partition bar and the second partition bar are fixed to a member serving as a skeleton of the vehicle body extending in different directions, the torsional rigidity of the vehicle body can be further increased.

Further, since the second partition bar and the floor cross member are connected via the side frame, the rigidity and strength of the partition wall can be increased.

The invention described in Claim 2 is characterized in that in the vehicle structure according to claim 1, wherein the partition plate is penetrated in the longitudinal direction of the vehicle body, the front end of the cargo accommodated in the cargo accommodating portion can be inserted A hole (for example, the hole 28 of the embodiment) is formed.
By adopting such a configuration, even when the load to be loaded in the load storage unit is large or disposed on the front side of the load storage unit, the partition plate and the load can interfere with each other. Since it can prevent, a partition board can be provided irrespective of the magnitude | size and arrangement | positioning of a load.

According to a third aspect of the present invention, in the vehicle body structure according to the first or second aspect , the partition plate is formed with flanges (for example, the flange 27 of the embodiment) at both ends in the vehicle width direction. It is characterized by.
By setting it as such a structure, the rigidity and intensity | strength of a partition board can be improved and the rigidity and intensity | strength of a partition part can further be improved.

According to a fourth aspect of the present invention, in the vehicle body structure according to any one of the first to third aspects, the first partition bar has a cylindrical shape with a rectangular cross-sectional shape in a vertical plane including the longitudinal direction of the vehicle body. It is a member.
By setting it as such a structure, the rigidity and intensity | strength of a 1st partition bar can be raised, and the rigidity and intensity | strength of a partition board can further be improved.
In the event of a collision, the load of the load in the load storage unit is higher on the upper side than on the lower side of the partition wall, so that the load loaded in the load storage unit at the time of the collision moves to the passenger compartment. It can be surely prevented.

According to the present invention, the partition wall portion is a planar partition plate between the bar-shaped first partition bar and the second partition bar respectively supported by members disposed at both ends of the partition wall in the vehicle width direction. By providing the structure, the rigidity and strength of the partition wall can be increased. Thereby, the rigidity and strength of the vehicle body can be secured, and in particular, the torsional rigidity can be imparted to the vehicle body.
In addition, by providing a partition plate between the passenger compartment and the load storage portion, it is possible to prevent the load loaded in the load storage portion from moving to the passenger compartment at the time of a collision.

It is a figure which shows an example of the vehicle body structure by embodiment of this invention. 2 is a cross-sectional view taken along line AA in FIG. It is the elements on larger scale of FIG. It is a figure which shows the relationship between a partition part and a load.

Hereinafter, a vehicle body structure according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4.
In the drawings, the arrow FR indicates the front of the vehicle 1, the arrow UP indicates the upper side of the vehicle 1, and the arrow LH indicates the left side of the vehicle 1.

  FIG. 1 shows a vehicle body structure between a passenger compartment 2 and a load storage part 3 such as a trunk room behind the passenger compartment 2, and a rear side extending substantially along the vehicle longitudinal direction on the left and right sides of the rear part of the vehicle 1. A frame 4 (side frame) and a rear wheel house 5 that covers the upper outside of a rear wheel (not shown) are arranged. The rear side frame 4 is formed in a substantially rectangular cross section, and the rear wheel house 5 bulges inward in the vehicle width direction at an upper portion of the rear side frame 4 on the outer side in the vehicle width direction. The lower end of the rear wheel house 5 is joined to the adjacent rear side frame 4. Between the front edge portions of the left and right rear side frames 4, a passenger floor panel (floor panel) 6 of the passenger compartment 2 is laid, and between the regions on the rear side of the front edge portions of the left and right rear side frames 4, A cargo compartment floor panel 7 (floor panel) of the load storage unit 3 is laid. A partition wall 8 is provided between the passenger compartment 2 and the load storage portion 3, and a rear seat (not shown) is disposed in front of the partition wall 8 in the passenger compartment 2. .

  The partition wall 8 extends substantially along the vertical direction above the left and right rear side frames 4, and a pair of left and right vertical frames (pillar members) whose outer portions in the vehicle width direction are welded and fixed to the corresponding left and right rear wheel houses 5. ) 9, a gusset plate 10 that connects the lower end of the vertical frame 9 to the rear side frame, an upper frame (not shown) that extends substantially along the vehicle width direction and connects the upper ends of the left and right vertical frames 9, A first partition bar 21 extending substantially along the width direction and connecting the vicinity of the middle part in the vertical direction of the left and right vertical frames 9, and extending substantially along the vehicle width direction below the first partition bar, both ends 22 a are rear side A second partition bar 22 fixed to the frame 4 and a partition plate 23 provided between the first partition bar 21 and the second partition bar 22 are provided.

In the present embodiment, each of the left and right vertical frames 9 extends obliquely rearwardly from the lower end toward the upper side. The lower ends of the left and right vertical frames 9 have a height that does not reach the upper surfaces of the corresponding left and right rear side frames 4 and are separated from the upper surfaces of the corresponding rear side frames 4 by a predetermined distance. The gusset plate 10 is bolted to the upper surfaces of the left and right rear side frames 4 and the lower edge of the vertical frame 9 to connect the left and right rear side frames 4 to the vertical frame 9.
The gusset plate 10 has a U-shaped cross section that is substantially similar to the cross section of the lower end of the vertical frame 9 and expands downward from the upper end portion toward the lower end, and the lower end with the enlarged cross section abuts against the upper surface of the corresponding rear side frame 4. It is supposed to be. In FIG. 3, the gusset plate 10 is omitted for convenience of illustration.

The first partition bar 21 shown in FIGS. 1 and 2 is formed of a cylindrical member having a substantially rectangular cross section. The first partition bar 21 is provided with connecting members 24 at both end portions 21a in the vehicle width direction, and the connecting members 24 are bolted to the vertical frame 9.
In the present embodiment, as shown in FIG. 3, the vertical frame 9 is formed with a plurality of bolt holes 25 through which bolts for connecting the first partition bar 21 can be inserted at predetermined intervals in the vertical direction. The bolt hole 25 to be used can be selected according to the mounting height of the first partition bar 21.
Of the plurality of bolt holes 25, the lowermost bolt hole 25A is configured such that a bolt connecting the vertical frame 9 and the gusset plate 10 (see FIG. 1) is inserted therethrough. When this bolt hole 25A is used to attach 21 to the vertical frame 9, the connecting member 24 of the first partition bar 21, the vertical frame 9 and the gusset plate 10 are bolted together.
Returning to FIG. 1, in the present embodiment, a plurality of clip holes 26 through which clips for attaching an interior carpet of the vehicle 1 can be inserted are formed in the upper end portion of the first partition bar 21.

As shown in FIGS. 1 and 2, the second partition bar 22 is formed of a cylindrical member having a substantially circular cross-sectional shape in a vertical plane including the vehicle body longitudinal direction. As shown in FIG. 1, both end portions 22a in the vehicle width direction of the second partition bar 22 are crushed so as to have a flat shape, and overlapped with a rear edge portion 12a of the floor cross member 12 described later, Bolts are fastened (both fastened) to the rear side frame 4.
The second partition bar 22 is disposed in the vicinity of the bottom portion (the cargo compartment floor panel 7) of the load storage unit 3, and the first partition bar 21 is disposed at a substantially intermediate portion in the vertical direction of the load storage unit 3. ing.

In the partition wall plate 23, the length of the upper end portion 23 a in the vehicle width direction is slightly shorter than the length of the first partition bar 21 in the vehicle width direction, and the length of the lower end portion 23 b in the vehicle width direction is the vehicle of the second partition bar 22. The length in the vertical direction is slightly shorter than the length in the width direction, and the length in the vertical direction is substantially the same as the distance between the first partition bar 21 and the second partition bar. The partition plate 23 has an upper end 23 a fixed to the first partition bar 21 and a lower end 23 b fixed to the second partition bar 22.
At this time, both end portions 23 c of the partition wall plate 23 in the vehicle width direction are located in the vicinity of both end portions 21 a and 22 a of the first partition bar 21 and the second partition bar 22.

In the present embodiment, the partition plate 23 is formed with flanges 27, 27 formed by bending both end portions 23c in the vehicle width direction. Specifically, the flanges 27 and 27 are formed by bending both end portions 23c of the partition wall plate 23 toward the rear, and bending the rear end portions of the bent portions further outward toward the vehicle width direction. Yes. For this reason, as for the partition plate 23, the whole cross-sectional shape including the flanges 27 and 27 becomes a substantially hat shape.
In the present embodiment, the partition wall plate 23 is formed with a hole portion 28 penetrating in an out-of-plane direction at a substantially central portion in the vehicle width direction and the vertical direction. As shown in FIG. 4, the hole 28 is configured such that a front end portion 29 a of a load 29 such as an IPU (intelligent power unit) loaded in the load storage portion 3 can be inserted therethrough.

Returning to FIG. 1, the left and right rear side frames 4 are similarly connected by an underfloor cross member 11 and an above-floor cross member 12 that extend substantially along the vehicle width direction. The under-floor cross member 11 and the above-floor cross member 12 are arranged facing each other up and down across the passenger compartment floor panel 6 and are connected to the rear side frame 4 and spot welded to the upper and lower surfaces of the passenger compartment floor panel 6. Are joined together.
The cross member 12 on the floor connects a pair of substantially triangular plate members 12A, one end of which is connected to the upper wall 4a of each of the left and right rear side frames 4, and the inner ends of these plate members 12A in the vehicle width direction. Connecting member 12B.
In the present embodiment, the underfloor cross member 11 and the overfloor cross member 12 constitute a part of the lower region of the partition wall portion 8.

Next, operations and effects of the vehicle body structure of the present embodiment described above will be described.
According to the vehicle body structure according to the present embodiment, the partition wall portion 8 has a planar partition plate 23 between the first partition bar 21 supported by the vertical frame 9 and the second partition bar 22 supported by the rear side frame 4. By providing the structure, the rigidity and strength of the partition wall portion 8 can be increased. Thereby, the rigidity and strength of the vehicle body can be increased, and in particular, torsional rigidity can be imparted to the vehicle body.
Further, by providing the partition plate 23 between the passenger compartment 2 and the load storage section 3, it is possible to prevent the load 29 loaded in the load storage section 3 from moving to the passenger compartment 2 in the event of a collision.

  Further, the partition wall portion 8 has a floor cross member 12 extending substantially along the vehicle width direction on the upper side of the passenger compartment floor panel 6, and both end portions of the floor cross member 12 in the vehicle width direction and the second partition bar 22 The both end portions 22a in the vehicle width direction are fixed to the upper wall 4a of the rear side frame 4 so that the second partition bar 22 and the floor cross member 12 are connected via the rear side frame 4. 8 and the rigidity and strength of the vehicle body can be increased.

  Further, the partition plate 23 is formed with a hole 28 that penetrates in the longitudinal direction of the vehicle body and through which the front end portion 29a of the load 29 stored in the load storage 3 can be inserted. Even when the load 29 loaded on the load storage 3 is large or when the load 29 is disposed on the front side of the load storage unit 3, the partition plate 23 and the load 29 can be prevented from interfering with each other. Therefore, the partition plate 23 can be provided regardless of the size and arrangement of the load 29.

In the present embodiment, the partition wall plate 23 is formed with flanges 27 at both ends 23c in the vehicle width direction, whereby the rigidity and strength of the partition wall plate 23 can be increased, and the rigidity of the partition wall portion 8 can be increased. The strength can be reliably increased.
Further, in the present embodiment, the first partition bar 21 is a cylindrical member having a rectangular cross-sectional shape in the vertical plane including the longitudinal direction of the vehicle body, so that the rigidity and strength of the first partition bar 21 can be increased. The rigidity and strength of the partition plate 23 can be reliably increased.
At the time of a collision, the load of the load 29 loaded on the load storage unit 3 is larger on the upper side than on the lower side of the partition wall 8, so that the load 29 loaded on the load storage unit 3 at the time of the collision. Can be reliably prevented from moving to the passenger compartment 2.

  The first partition bar 21 is arranged in the middle portion of the load storage unit 3 in the vertical direction, so that the load can be reduced even if the cross-sectional shape is slightly increased in order to ensure a predetermined rigidity and strength. Since the load 29 placed on the room floor panel 7 hardly reaches the height of the first partition bar 21, the first partition bar 21 interferes with the load 29 arranged in the load storage unit 3. Therefore, it is considered that there is little influence on the layout of the load 29.

As mentioned above, although embodiment of the vehicle body structure by this invention was described, this invention is not limited to said embodiment, In the range which does not deviate from the meaning, it can change suitably.
For example, in the above embodiment, the second partition bar 22 and the floor cross member 12 are fastened together with the upper wall 4a of the rear side frame 4, but may be separately fixed. The form of the floor cross member 12 may be other than the form described above.

Further, in the above embodiment, the hole 28 is formed in the partition plate 23, but when the partition plate 23 and the load 29 loaded in the load storage unit 3 do not interfere with each other, the hole is formed in the partition plate 23. The portion 28 may not be formed. Further, the shape, the position and the number of the holes 28 may be arbitrarily set as long as the partition plate 23 can ensure predetermined rigidity and strength.
In the above embodiment, the flanges 27 are formed at both ends 23c of the partition wall plate 23 in the vehicle width direction, but they may not be formed. Further, the flange 27 may have a shape other than the shape described above. Further, the partition plate 23 may be provided with a reinforcing member other than the flange 27.
In the above embodiment, the first partition bar 21 is configured by a cylindrical member having a rectangular cross section, and the second partition bar 22 is configured by a cylindrical member having a circular cross section. The 1st partition bar 21 and the 2nd partition bar 22 may be comprised with the member of shapes other than this.
In the present embodiment, the vertical frame 9 is fixed to the rear side frame 4 via the gusset plate 10, but the lower end may be directly fixed to the rear side frame 4. The second partition bar 22 may be fixed to the vertical frame 9 together with the first partition bar 21.

1 Vehicle 2 Passenger Room 3 Load Storage Section 4 Rear Side Frame (Side Frame)
4a Upper wall 5 Rear wheel house 6 Guest room floor panel (floor panel)
7 Cargo floor panel (floor panel)
8 Bulkhead 9 Vertical frame 10 Gusset plate 11 Underfloor cross member 12 Overfloor crossmember 21 First bulkhead bar 22 Second bulkhead bar 23 Bulkhead plate 23a Upper end 23b Lower end 27 Flange 28 Hole 29 Load 29a Front end

Claims (4)

A vehicle body structure comprising: partition portions disposed between the passenger compartment and the load storage portion; and side frames disposed on both sides in the vehicle width direction and extending substantially along the vehicle body longitudinal direction ,
The partition wall portion extends substantially along the vehicle width direction, and both end portions in the vehicle width direction are respectively supported by members disposed at both end portions of the partition wall portion in the vehicle width direction; and
A second portion provided below the first partition bar and extending substantially along the vehicle width direction and having both ends in the vehicle width direction supported by members disposed at both ends of the partition wall in the vehicle width direction, respectively. A bulkhead bar;
A partition plate provided between the first partition bar and the second partition bar and having an upper end fixed to the first partition bar and a lower end connected to the second partition bar;
A vertical frame extending substantially along the vertical direction on the upper side of the side frame;
An on-floor cross member extending substantially along the vehicle width direction on the upper side of the floor panel;
Both ends of the first partition bar in the vehicle width direction are respectively fixed to the vertical frame,
A vehicle body structure characterized in that both ends of the cross member on the floor in the vehicle width direction and both ends of the second partition bar in the vehicle width direction are fixed to the upper wall of the side frame . The said partition plate, penetrate in the longitudinal direction of the vehicle body, the vehicle body according to claim 1, the front end of the cargo accommodating housing has been cargo in portion, characterized in that the hole that can be inserted are formed Construction. The vehicle body structure according to claim 1 or 2 , wherein the partition plate is formed with flanges at both ends in the vehicle width direction. The vehicle body structure according to any one of claims 1 to 3, wherein the first partition bar is a tubular member having a rectangular cross-sectional shape in a vertical plane including a vehicle body longitudinal direction.

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