JP2006298164A - Body frame structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a skeleton structure of a vehicle body capable of realizing high steering stability and quietness without increasing the size of a pillar.
SOLUTION: A first separator 37a formed in a reinforcement D pillar 37 divides the inner space of the rail inner 27 in the front and rear directions, and an annular skeleton structure is formed by the left and right reinforcement D pillars 37 and the rail rear 31. Similarly, the inner space of the rail inner 27 is partitioned forward and backward by the second separator 47a formed in the reinforcement C pillar 47, and an annular skeleton structure is formed by the left and right reinforcement C pillars 47 and the braces 32. Furthermore, the rail inner 27 is configured to suppress mutual displacement between the front and rear reinforcement C pillars 47 and the reinforcement D pillars 37. Accordingly, the left and right reinforcement D pillars 37 and the left and right reinforcement C pillars 47 are efficiently stiffened from each other.
[Selection] Figure 3

Description

  The present invention particularly relates to a skeleton structure of a vehicle body between a rear pillar and a pillar positioned in front of the rear pillar.

  In general, it is known that the rigidity of the vehicle body greatly contributes to the improvement of the steering stability and quietness of the vehicle. That is, for example, when the vehicle body rigidity is improved, the followability of the rear tire with respect to the load input to the front suspension during steering is improved, and the steering stability is improved. Further, when the vehicle body rigidity is improved, the generation of a roaring sound (so-called drumming) in the vehicle interior caused by the vibration of the roof panel is suppressed, and the quietness is improved. For this reason, many proposals have been made for a skeleton structure in which the structure of each pillar disposed on the side of the vehicle body is improved in order to improve the vehicle body rigidity.

On the other hand, in recent years, a skeleton structure of a vehicle body in which a center pillar (B pillar) is omitted has been proposed in order to secure a wide door opening in a vehicle or the like having a so-called slide door. In this type of skeleton structure, it is necessary to suppress a decrease in vehicle body rigidity due to omission of the B pillar. As a countermeasure, it is known that stiffening the rear quarter pillar (C pillar) can effectively suppress a reduction in vehicle body rigidity due to the omission of the B pillar. For example, Non-Patent Document 1 discloses another pillar. On the other hand, a technique in which the C pillar is relatively enlarged is disclosed.
September 2003, “Research Series NO: J-341” published by JRI Center, P96-97

  However, when the C pillar is enlarged as in the technique disclosed in Non-Patent Document 1 described above, the C pillar may give a passenger a feeling of pressure. That is, the skeletal structure in which the B pillar is omitted as described above is generally widely applied to a vehicle having three rows of seats in the front and rear. However, when the C pillar is enlarged in this type of vehicle, the third row is used. In some cases, the front view of the occupant seated on the seat is blocked by the C pillar.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a skeleton structure for a vehicle body that can realize high steering stability and quietness without increasing the size of the pillar.

  The present invention provides a frame structure of a vehicle body in which the upper ends of at least three pillars are connected to the rail sides extending in the front-rear direction along the left and right sides of the roof panel. A rail skeleton member that suppresses mutual displacement between the first pillar located at the rearmost of the pillars and the second pillar located immediately before the first pillar, and the roof panel. A first roof skeleton member installed between the left and right rail skeleton members at a position corresponding to the left and right first pillars, and disposed on the roof panel, corresponding to the left and right second pillars. A second roof skeleton member installed between the left and right rail skeleton members at a position where the rail skeleton member is disposed, and an inner space of the rail skeleton member at the upper end portion connected to the first rail skeleton member. A first pillar skeleton member having a first separator to be partitioned, and a second pillar disposed in the second pillar and partitioning an inner space of the rail skeleton member in the front-rear direction at an upper end portion connected to the rail skeleton member. And a second pillar skeleton member having a separator.

  According to the skeleton structure of the vehicle body of the present invention, high steering stability and quietness can be realized without increasing the size of the pillar.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a main part of a vehicle body as viewed obliquely from the left rear side, and FIG. 2 shows an essential part of a vehicle body skeleton in region I of FIG. 1 with an outer panel and a roof panel removed. FIG. 3 is a perspective view of the main part of the vehicle body skeleton of FIG. 2 as viewed obliquely from the left front side of the vehicle body, FIG. 4 is a cross-sectional view of the main part of the vehicle body along the line AA in FIG. FIG. 6 is a cross-sectional view of the main part of the vehicle body taken along line CC of FIG. 2, and FIG. 7 is a cross-sectional view of the main part of the vehicle body taken along line DD of FIG. FIG.

  In FIG. 1, reference numeral 1 denotes a vehicle body. In the present embodiment, the vehicle body 1 is a vehicle body suitable for a so-called three-row seat vehicle in which three rows of seats are arranged in the front and rear.

  Left and right side sills 5 extend in the front-rear direction at the lower portion of the vehicle body 1, and a rear wheel house 6 fixed to a rear frame side (not shown) is connected to the rear portion of the side sills 5. . Here, although not shown, a strut mount that supports the rear strut suspension is provided at the top of the rear wheel house 6, and load transmission between the vehicle body 1 side and the rear wheel side is possible via this strut mount. It has become.

  On the other hand, in the upper part of the vehicle body 1, left and right rail sides 8 extend in the front-rear direction on the left and right sides of the roof panel 7. An upper end portion of a front pillar (A pillar) 9 is connected to the front end portion of the rail side 8. The A pillar 9 extends downward along the front window opening 10 of the vehicle body 1, and its lower end is connected to the front end of the side sill 5.

  The rear end of the rail side 8 is connected to the upper end of a rear pillar (D pillar) 11 as a first pillar. The D pillar 11 extends downward along a rear gate opening 12 that opens at the rear of the vehicle body 1, and a lower end thereof is connected to a rear end of the rear frame side directly or via a floor panel or the like. Yes.

  Further, an upper end portion of a rear quarter pillar (C pillar) 13 as a second pillar is connected to the rail side 8 in front of the D pillar 11, and a lower end portion of the C pillar 13 is connected to the rear wheel house 6 via the rear wheel house 6. It is connected to the rear frame side.

  A door opening 14 is formed in a region surrounded by the A pillar 9 and the C pillar 13 on the side of the vehicle body 1. That is, in this embodiment, the vehicle body 1 has a skeletal structure in which the center pillar (B pillar) is omitted, whereby the front door opening and the rear door opening are integrally opened at the side of the vehicle body 1. A large door opening 14 is formed.

  A rear quarter window opening 15 is formed in a region surrounded by the C pillar 13 and the D pillar 11 on the side of the vehicle body 1.

  Here, as shown in FIGS. 4 and 5, the rail side 8 is arranged on the rail side outer panel portion 25 formed on the quarter panel outer 20 disposed on the vehicle exterior side of the rear portion of the vehicle body and on the vehicle compartment side of the rear portion of the vehicle body. It has a rail side inner panel portion 26 formed on the quarter panel inner 21 provided and a rail inner 27 interposed between them, and these are joined together by flange joining or the like to constitute the main part. Has been.

  The roof panel 7 is installed between a roof panel outer 30 (see FIGS. 1 and 4) disposed on the top of the vehicle body 1 and the left and right rail inners 27 along the rear end of the roof panel outer 30. A rail rear 31 (see FIGS. 1 to 3) as one roof frame member and a brace 32 (see FIGS. 2 to 4) as a second roof frame member installed between the left and right rail inners 27 in front of the rail rear 31. These are joined to each other by flange joining or the like to constitute the main part.

  Further, as shown in FIG. 7, the D pillar 11 includes a D pillar outer panel portion 35 formed on the quarter panel outer 20, a D pillar inner panel portion 36 formed on the quarter panel inner 21, and an intermediate therebetween. A reinforcement D pillar 37 as a first pillar skeleton member to be mounted is included, and these are joined to each other by flange joining or the like to constitute a main part.

  Further, as shown in FIG. 6, the C pillar 13 includes a C pillar outer panel portion 45 formed in the quarter panel outer 20, a C pillar inner panel portion 46 formed in the quarter panel inner 21, and a gap therebetween. A reinforcement C pillar 47 as a second pillar skeleton member to be mounted is provided, and these are joined to each other by flange joining or the like to constitute a main part.

  Here, as shown in FIG. 1, in this embodiment, the upper end portion side of the D pillar 11 is greatly inclined forward, so that the D pillar 11 is positioned at a position relatively close to the C pillar 13. It is connected to the side 8.

  In such a skeleton structure of the vehicle body 1, as shown in FIGS. 2 and 3, the rail inner 27 includes a substantially bowl-shaped recess 27 a along the longitudinal direction of the vehicle body, and flange portions formed at both edge portions of the recess 27 a. It is comprised with the sheet-metal member provided with 27b, 27c. Here, as shown in FIGS. 4 and 5, the recess 27 a of the rail inner 27 is arranged in a slightly inclined state toward the outside of the vehicle body 1, and one flange portion 27 b is directed downward of the vehicle body 1. The other flange portion 27c is disposed below the flange 27b and oriented inward of the vehicle body 1.

  At the rear end portions of the left and right rail inners 27, the front end portions of the reinforcement D pillars 37 are fixed to both flange portions 27 b and 27 c of the rail inner 27. Furthermore, a first separator 37a that divides the internal space of the concave portion 27a in the front-rear direction is formed at the front edge of the distal end portion of the reinforcement D pillar 37. The first separator 37a extends along the concave portion 27a. A flange portion 37b to be joined is formed. The first separator 37 a divides the internal space of the recess 27 a along the ridge line of the reinforcement D pillar 37, thereby forming a good load transmission path between the rail inner 27 and the reinforcement D pillar 37. To do. In other words, the first separator 37 a forms a box cross section that divides the internal space of the recess 27 a along the ridgeline of the reinforcement D pillar 37, and the rail inner 27 Suppresses the load transmission in the front-rear direction.

  Further, the rail rear 31 is constructed between the rail inners 27 at positions where both end portions thereof are continuous with the tip portions of the reinforcement D pillars 37, whereby the vehicle body 1 has one reinforcement D pillar 37 attached thereto. An annular skeleton structure capable of transmitting the input load to the other reinforcement D pillar 37 via the rail rear 31 is formed.

  Similarly, the front end portion of the reinforcement C pillar 47 is fixed to both flanges 27 b and 27 c of the rail inner 27 in front of the reinforcement D pillar 37. Furthermore, a second separator 47a is formed at the front edge of the tip portion of the reinforcement C pillar 47 to divide the internal space of the recess 27a in the front-rear direction. The second separator 47a extends along the recess 27a. A flange portion 47b to be joined is formed. The second separator 47 a divides the internal space of the recess 27 a along the ridge line of the reinforcement C pillar 47, thereby forming a good load transmission path between the rail inner 27 and the reinforcement C pillar 47. To do. In other words, the second separator 47 a forms a box cross section that divides the internal space of the recess 27 a along the ridgeline of the reinforcement C pillar 47, so that the rail inner 27 Suppresses the load transmission in the front-rear direction.

  Further, the brace 32 is constructed between the rail inner 27 at a position where both end portions thereof are continuous with the distal end portion of each reinforcement C pillar 47, whereby the vehicle body 1 has one reinforcement C pillar 47 attached to one of the reinforcement C pillars 47. An annular skeleton structure capable of transmitting the input load to the other reinforcement C pillar 47 via the brace 32 is formed.

  In this embodiment, since the upper end portion of the reinforcement D pillar 37 is connected to the rail inner 27 at a position relatively close to the upper end portion of the reinforcement C pillar 47, the rail inner 27 is connected to the reinforcement D. Mutual displacement between the pillar 37 and the reinforcement C pillar 47 is suppressed. That is, between the reinforcement D pillar 37 and the reinforcement C pillar 47, the rail inner 27 functions as a rail frame member. When the upper end portion of the reinforcement D pillar 37 and the upper end portion of the reinforcement C pillar 47 are separated from each other, a stiffening member is added on the rail inner 27 between them to thereby form a rail skeleton. It is also possible to realize the function as a member.

  According to such an embodiment, the first separator 37a formed in the reinforcement D pillar 37 divides the inner space of the rail inner 27 in the front-rear direction, and the left and right reinforcement D pillars 37 and the rail rear 31 have an annular shape. Similarly, the inner space of the rail inner 27 is partitioned forward and backward by the second separator 47a formed in the reinforcement C pillar 47, and the annular structure of the left and right reinforcement C pillars 47 and the braces 32 is formed. By forming a skeletal structure and further suppressing the mutual displacement between the front and rear reinforcement C pillars 47 and 37 by the rail inner 27, the left and right reinforcement D pillars 37 and the right and left phosphorus Loads can be efficiently transmitted between the force C pillars 47 to stiffen each other.

  Therefore, even when the B-pillar is omitted and the vehicle body 1 is constructed, high vehicle body rigidity can be realized without making the C pillar 47 etc. unnecessarily large, and high steering stability and quietness can be realized. can do.

The perspective view which looked at the principal part of the vehicle body from diagonally left rear The perspective view which removes an outer panel and a roof panel, and shows the principal part of the body frame of I field of Drawing 1 The perspective view which looked at the principal part of the body frame of Drawing 2 from the left diagonal front of the body Sectional view of the main part of the vehicle body along the line AA in FIG. Sectional drawing of the principal part of the vehicle body along the BB line in FIG. Sectional drawing of the principal part of the vehicle body along line CC in FIG. Sectional drawing of the principal part of the vehicle body along the DD line of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Car body 7 ... Roof panel 8 ... Rail side 9 ... Front pillar 11 ... Rear pillar (1st pillar)
13 ... Rear quarter pillar (second pillar)
DESCRIPTION OF SYMBOLS 14 ... Door opening part 20 ... Quarter panel outer 21 ... Quarter panel inner 25 ... Rail side outer panel part 26 ... Rail side inner panel part 27 ... Rail inner (rail frame member)
27a ... Recessed parts 27b, 27c ... Flange part 30 ... Roof panel outer 31 ... Rail rear (first roof frame member)
32 ... Brace (second roof frame member)
35 ... D-pillar outer panel part 36 ... D-pillar inner panel part 37 ... Reinforce D-pillar 37 (first pillar frame member)
37a ... 1st separator 37b ... Flange part 45 ... C pillar outer panel part 46 ... C pillar inner panel part 47 ... Reinforce C pillar (2nd pillar frame member)
47a: Second separator 47b: Flange

Claims (1)

In the frame structure of the vehicle body in which the upper ends of at least three pillars are connected to the rail sides extending in the front-rear direction along the left and right sides of the roof panel,
A rail skeleton member that is disposed on the rail side and suppresses mutual displacement between the first pillar located at the rearmost part of the pillars and the second pillar located immediately before the first pillar. When,
A first roof skeleton member disposed between the left and right rail skeleton members at a position corresponding to the left and right first pillars disposed on the roof panel;
A second roof skeleton member disposed between the left and right rail skeleton members at a position corresponding to the left and right second pillars disposed on the roof panel;
A first pillar skeleton member disposed on the first pillar and having a first separator that divides the internal space of the rail skeleton member in the front-rear direction at an upper end portion to which the rail skeleton member is coupled;
A second pillar skeleton member disposed on the second pillar and having a second separator that divides the internal space of the rail skeleton member forward and backward at an upper end portion to which the rail skeleton member is coupled. Characteristic skeleton structure of the car body.

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