JP5262284B2 - Body side structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle body side structure can sufficiently increase the buckling rigidity and the bending rigidity of a rocker disposed in a lower portion of a vehicle body. <P>SOLUTION: Rib-like hollow swelling sections 1G, 1H are formed integrally with the upper wall and sidewalls of the rocker inner section 1A. Rib-like hollow swelling sections 1J, 1K are formed integrally with the sidewalls and the lower wall of the rocker outer section 1B. The hollow swelling sections 1G, 1J, 1K have closed cross sections, respectively. Therefore, the buckling rigidity of the rocker 1 in the axial direction is increased, and the bending rigidity of the rocker 1 in the vertical and lateral directions is sufficiently increased. As a result, a separate reinforcement does not need to be installed in the rocker 1, and the plate thickness of the rocker 1 can be reduced. Since the collapse of the cross section of the rocker 1 when a side collision load is input from the other vehicle to the vehicle body is suppressed, the bending of the rocker 1 is suppressed. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a vehicle body side structure, and more particularly to a vehicle body side structure in which a rocker (side sill) having a hollow closed cross section is disposed on a lower side of a vehicle body.

  Generally, a rocker (side sill) having a hollow closed cross section extending in the front-rear direction is disposed on the lower side of the vehicle body. This rocker is normally formed in a hollow closed cross section by a combined structure of a rocker inner and a rocker outer extending in the front-rear direction of the vehicle body. The rocker is joined to the lower part of the center pillar and both sides of the floor panel, and a floor tunnel is generally formed at the center of the floor panel.

  As a vehicle body side structure provided with this type of rocker, for example, Patent Document 1 describes a structure in which a reinforcement is provided in the rocker in order to increase the rocker's axial buckling rigidity against an offset collision of the vehicle. Has been. This reinforcement is formed, for example, in the shape of a folded plate having an L-shaped cross section, and one piece thereof is welded to the inner surface of the intermediate portion in the vertical direction of the rocker inner.

On the other hand, the floor tunnel structure formed on the floor panel is formed as a double-walled hollow body having an inner wall and an outer wall to enhance torsional rigidity, and the contact points between the inner wall and the outer wall are welded and rivets A structure in which joints are joined by fastening, bonding or the like is described (for example, see Patent Document 2).
JP 2001-55171 A JP-A-10-67343

  By the way, in the vehicle body side structure having a rocker as described in Patent Document 1, it may be possible to increase the buckling rigidity in the axial direction of the rocker, but the rocker has sufficient bending rigidity in the vertical and horizontal directions. Therefore, if a side collision load is input from another vehicle, there is a possibility that the cross-sectional shape of the rocker will collapse and the rocker will be bent greatly.

  Therefore, an object of the present invention is to provide a vehicle body side part structure that can sufficiently increase the buckling rigidity and bending rigidity of a rocker (side sill) disposed on the lower side part of the vehicle body.

The vehicle body side structure according to the present invention is a vehicle body side structure in which a rocker having a hollow closed cross section extending in the front-rear direction of the vehicle body is disposed on the lower side portion of the vehicle body. hollow bulged portion extending in the longitudinal direction of the rocker is integrally formed, the opening of the hollow bulge portion is formed on the scan Lock preparative shape, opposing part of both sides of the opening are bonded to each other, A part of the hollow bulge is joined to a side different from the side where the hollow bulge is formed in the rocker.

  In the vehicle body side structure according to the present invention, since the hollow bulge portion that bulges inside the rocker and extends in the front-rear direction of the rocker is formed integrally with the rocker, the buckling rigidity in the axial direction of the rocker is enhanced, In addition, the bending rigidity of the rocker in the vertical direction and the horizontal direction is increased. As a result, it is not necessary to provide a separate reinforcement in the rocker. When a side collision load is input from another vehicle, the rocker is prevented from being deformed in cross section, and the rocker is prevented from bending.

In the vehicle body side portion structure of the present invention, the opening of the hollow bulge portion is formed on the scan Lock preparative shape, opposing part of both sides of the opening are bonded to each other. Thereby, since the hollow bulging part is formed in a closed cross section, the bending rigidity of the rocker in the vertical direction and the horizontal direction is sufficiently increased.

Further, the side different from the side where the hollow bulged portion is formed in the rocker, a portion of the hollow bulge portion that is joined. As a result , the closed cross section is formed on a side different from the side where the hollow bulging portion of the rocker is formed, so that the bending rigidity of the rocker in the vertical direction and the horizontal direction can be further enhanced.

  According to the vehicle body side part structure according to the present invention, the hollow bulging portion that bulges inside the rocker and extends in the front-rear direction of the rocker is formed integrally with the rocker, so that a separate lean force is provided in the rocker. Therefore, the buckling rigidity in the axial direction of the rocker can be increased, and the bending rigidity in the vertical and horizontal directions of the rocker can be increased. As a result, it is possible to reduce the thickness of the rocker, and even in that case, the rocker is prevented from being bent by suppressing the deformation of the cross-sectional shape of the rocker when a side collision load is input from another vehicle. be able to.

  Embodiments of a vehicle body side part structure according to the present invention will be described below with reference to the drawings. In the drawings to be referred to, FIG. 1 is a perspective view showing an appearance of a vehicle body side structure according to an embodiment, FIG. 2 is a partial perspective view of the rocker shown in FIG. 1, and FIG. 3 is an enlarged vertical section of the rocker shown in FIG. FIG.

  As shown in FIG. 1, the vehicle body side part structure according to an embodiment includes a rocker (side sill) 1 that is disposed on the lower side of the vehicle body and extends in the vehicle body front-rear direction. The lower end of the front pillar 2 is coupled to the front end of the rocker 1, the lower end of the rear pillar 3 is coupled to the rear end, and the lower end of the center pillar 4 is coupled to the center in the front-rear direction. Yes.

  As shown in FIG. 2, in the rocker 1, a rocker inner 1A and a rocker outer 1B, each formed in a substantially hat-shaped cross-sectional shape, are welded to each other face to face to form a hollow closed cross section between them. ing. As the welding joint, an upper joint piece 1C and a lower joint piece 1D are formed on the rocker inner 1A, and an upper joint piece 1E and a lower joint piece 1F are formed on the rocker outer 1B.

  Here, the rocker 1 is integrally formed with a plurality of hollow bulging portions 1G, 1H, 1J, and 1K that bulge inwardly and extend in the front-rear direction of the rocker 1. That is, the hollow bulging portions 1G and 1H are integrally formed on the rocker inner 1A by roll forming, and the hollow bulging portions 1J and 1K are integrally formed on the rocker outer 1B by roll forming.

  As shown in the longitudinal sectional view of FIG. 3 in an enlarged manner, the hollow bulging portion 1G bulges inward from the upper wall portion (reference numeral omitted) of the rocker inner 1A. The hollow bulge portion 1G is formed in a relatively small rib shape extending in the front-rear direction along the upper wall portion of the rocker inner 1A, and the cross-sectional shape thereof is, for example, an oval shape.

  In the hollow bulge portion 1G, an opening to the upper wall portion of the rocker inner 1A is formed in a slot shape. And the opposing part of the both sides of this slot-shaped opening part is mutually joined by welding parts W, such as laser beam welding, The hollow bulging part 1G is formed in the closed cross section.

  The hollow bulge portion 1H bulges inward from the side wall portion (reference numeral omitted) of the rocker inner 1A. The hollow bulge portion 1H is formed in a relatively large rib shape extending in the front-rear direction along the side wall portion of the rocker inner 1A, and the cross-sectional shape thereof is substantially oval.

  The hollow bulge portion 1H has an open cross section in which the opening to the side wall portion of the rocker inner 1A is formed wide, and the wire harness WH and the like can be accommodated through the wide opening.

  The hollow bulging portion 1J bulges inward from the side wall portion (reference numeral omitted) of the rocker outer 1B. The hollow bulge portion 1J is formed in a rib shape extending in the front-rear direction along the side wall portion of the rocker outer 1B, and the cross-sectional shape thereof is an oval larger than the hollow bulge portion 1G.

  In the hollow bulge portion 1J, an opening to the side wall portion of the rocker outer 1B is formed in a slot shape, similarly to the hollow bulge portion 1G. The opposing portions on both sides of the slot-like opening are joined to each other by a weld W such as laser beam welding, so that the hollow bulge 1J is formed in a closed cross section.

  The hollow bulge portion 1K is bulged inward from the lower wall portion (reference numeral omitted) of the rocker outer 1B. The hollow bulge portion 1K is formed in a rib shape extending in the front-rear direction along the lower wall portion of the rocker outer 1B, and the cross-sectional shape thereof is an oblong shape similar to that of the hollow bulge portion 1G.

  In the hollow bulging portion 1K, an opening to the lower wall portion of the rocker outer 1B is formed in a slot shape, similarly to the hollow bulging portion 1G. And the opposing site | parts of the both sides of this slot-shaped opening part are mutually joined by welding parts W, such as laser beam welding, The hollow bulging part 1K is formed in the closed cross section.

  In the vehicle body side part structure of one embodiment configured as described above, rib-shaped hollow bulging portions 1G and 1H are integrally formed on the upper wall portion and the side wall portion of the rocker inner 1A constituting the rocker 1, respectively. Rib-shaped hollow bulging portions 1J and 1K are integrally formed on the side wall portion and the lower wall portion of 1B, respectively, of which the hollow bulging portions 1G, 1J and 1K are each formed in a closed cross section.

  For this reason, the rocker 1 has the buckling rigidity in the axial direction enhanced by the hollow bulging portions 1G, 1H, 1J, and 1K, and in particular, the bending rigidity in the vertical and horizontal directions is enhanced. As a result, it is not necessary to provide a separate reinforcement in the rocker 1, and the thickness of the rocker 1 can be reduced. In this case as well, the deformation of the cross-sectional shape of the rocker 1 when a side collision load is input from another vehicle is suppressed, and the bending of the rocker 1 is suppressed.

  That is, according to the vehicle body side part structure of one embodiment, the buckling rigidity in the axial direction of the rocker 1 can be increased without providing a separate reinforcement in the rocker 1, and the rocker 1 can be vertically moved. And the bending rigidity of the left-right direction can be improved. As a result, it is possible to reduce the thickness of the rocker 1, and even in that case, the rocker 1 can be bent by suppressing the collapse of the cross-sectional shape of the rocker 1 when a side collision load is input from another vehicle. Can be suppressed.

  In addition, according to the vehicle body side structure of one embodiment, the hollow bulge 1H formed integrally with the side wall of the rocker inner 1A is formed in an open cross section having a wide opening, By accommodating the wire harness WH and the like, a space for accommodating the wire harness WH and the like can be secured.

  The vehicle body side part structure according to the present invention is not limited to the above-described embodiment. For example, the cross-sectional shape of the rocker 1 shown in FIG. 3 may be changed to the cross-sectional shapes shown in FIGS.

  The cross-sectional shape of the rocker 1 shown in FIG. 4 is obtained by changing the hollow bulging portion 1J formed on the side wall portion of the rocker outer 1B shown in FIG. 3 into a concave groove 1L. The concave groove 1L is formed in a rib shape extending in the front-rear direction along the side wall portion of the rocker outer 1B, and functions as a kind of hollow bulge portion having an open cross section. For this reason, also in the vehicle body side part structure provided with the rocker 1 having the cross-sectional shape shown in FIG.

  The cross-sectional shape of the rocker 1 shown in FIG. 5 omits the hollow bulging portions 1G and 1K shown in FIG. 4 and closes the hollow bulging portion 1H having an open cross section formed continuously from the side wall portion of the rocker inner 1A. The cross section is changed to a hollow bulging portion 1M.

  The hollow bulging portion 1M is formed in a large elliptical closed cross section by joining opposing portions on both sides of the slot-shaped opening by a welding portion W such as laser beam welding. It is formed in the shape of a pipe extending in the front-rear direction in the vicinity of the center of the.

  For this reason, in the vehicle body side part structure provided with the rocker 1 having the cross-sectional shape shown in FIG. 5, the same operational effects as described above can be obtained, and the pipe-shaped hollow bulging part 1M is used as an air duct for air conditioning. It is also possible.

  The cross-sectional shape of the rocker 1 shown in FIG. 6 is formed by continuously forming a hollow bulging portion 1M having a closed cross-section formed continuously on the side wall portion of the rocker inner 1A shown in FIG. 5 on the upper wall portion of the rocker inner 1A. It is changed to a hollow bulging portion 1N having a closed cross section.

  The hollow bulging portion 1N is formed in a large elliptical closed cross section by joining the opposing portions on both sides of the slot-shaped opening to each other by a welding portion W such as laser beam welding. It is formed in the shape of a pipe extending in the front-rear direction in the vicinity of the upper part.

  For this reason, in the vehicle body side structure provided with the rocker 1 having the cross-sectional shape shown in FIG. 6, the same effect as described above can be obtained, and in particular, the pipe-like hollow bulging portion 1N is the upper portion in the rocker 1. Since it is arrange | positioned near, the intensity | strength of the upper part of the rocker 1 improves.

  In the cross-sectional shape of the rocker 1 shown in FIG. 7, the rocker inner 1A is formed in a simple hat-shaped cross-sectional shape, and only the rocker outer 1B is integrally formed with a hollow bulging portion 1P that bulges inward continuously from the side wall portion. It is a thing.

  The hollow bulge portion 1P is formed in a large triangular closed cross section by joining opposing portions on both sides of the slot-like opening located on the side wall portion of the rocker outer 1B by welding portions W such as laser beam welding. Has been. The upper portion of the large triangular hollow bulge portion 1P is joined to the upper wall portion of the rocker outer 1B by a welding portion W such as laser beam welding, and the lower portion thereof is laser beam welded to the lower wall portion of the rocker outer 1B. Are joined by a welded portion W.

  For this reason, in the vehicle body side structure provided with the rocker 1 having the cross-sectional shape shown in FIG. 7, the same operational effects as described above can be obtained, and in particular, the hollow bulging portion 1P having a large triangular closed cross section can be obtained. Since it is arranged on the inner rocker outer 1B side, the strength of the rocker 1 on the outer side in the vehicle width direction is greatly improved.

It is a perspective view showing the appearance of the body side part structure concerning one embodiment of the present invention. It is a fragmentary perspective view of the rocker shown in FIG. FIG. 3 is an enlarged vertical sectional view of the rocker shown in FIG. 2. It is a longitudinal cross-sectional view which shows the 1st modification of the cross-sectional shape of the rocker shown in FIG. It is a longitudinal cross-sectional view which shows the 2nd modification of the cross-sectional shape of the rocker shown in FIG. It is a longitudinal cross-sectional view which shows the 3rd modification of the cross-sectional shape of the rocker shown in FIG. It is a longitudinal cross-sectional view which shows the 4th modification of the cross-sectional shape of the rocker shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Rocker, 1A ... Rocker inner, 1B ... Rocker outer, 1C ... Upper joining piece, 1D ... Lower joining piece, 1E ... Upper joining piece, 1F ... Lower joining piece, 1G ... Hollow bulging part, 1H, 1J, 1K, 1M , 1N, 1P ... hollow bulging portion, 1L ... concave groove, 2 ... front pillar, 3 ... rear pillar, 4 ... center pillar.

Claims (1)

A vehicle body side structure in which a rocker with a hollow closed cross section extending in the front-rear direction of the vehicle body is disposed on the lower side of the vehicle body,
The rocker is integrally formed with a hollow bulging portion that bulges inward and extends in the front-rear direction of the rocker,
The opening of the hollow bulge portion is formed on the scan Lock preparative shape, opposing part of both sides of the opening are bonded to each other,
A side part structure of a vehicle body, wherein a part of the hollow bulge is joined to a side different from the side where the hollow bulge is formed in the rocker.

Images