JP2007069667A - Coupling part structure of vehicle body frame member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a coupling part structure of a vehicle body frame member capable of expanding a space on a vehicle camber side, and reducing an entering amount of a pillar member to a vehicle camber when an external force acts from the side of a vehicle body. <P>SOLUTION: The coupling part structure of the vehicle body frame member is composed of pillar members 2 arranged on right and left both sides of a roof panel 1, and extending in a vehicle body vertical direction; a side roof rail 3 coupled with the upper end of the pillar member 2, and extending in a vehicle body fore-and-aft direction on the right and left both sides of the roof panel 1; a roof bow 4 arranged in the vehicle body fore-and-aft direction on the back surface of the roof panel 1; and a reinforcing member 5 coupling the roof bow 4, the upper end of the pillar member 2, and the side roof rail 3. The reinforcing member 5 is protrusively provided outside a vehicular cabin, and has inside the cabin a brittle portion 16 in which a roof harness 15 can be loosely inserted. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

 The present invention relates to a joint structure for a vehicle body skeleton member that can expand a space in a vehicle compartment and reduce the amount of a pillar member entering the vehicle compartment when an external force is applied from the side of the vehicle body.

  Normally, pillar members extend along the vertical direction of the vehicle body on both sides of the vehicle body, and side roof rails connected to the upper end of the pillar member extend along the vehicle body longitudinal direction. A roof bow is disposed along the left-right direction of the vehicle body. The roof bow, the upper end of the pillar member, and the side roof rail are connected by a reinforcing member.

In the joint structure of the vehicle body skeleton member having such a configuration, a technique for reducing the amount of penetration of the pillar member into the vehicle interior when an external force is applied from the side of the vehicle body is disclosed (for example, Patent Document 1). reference).
Japanese Patent Laid-Open No. 10-100936

 However, in the above-described conventional technology, when a long member such as a wire harness is routed on the vehicle interior side on both the left and right sides of the roof panel, there is a problem that the space on the vehicle interior side is narrowed by the diameter of the long member. there were.

  Accordingly, the present invention has been made in view of the above-described circumstances, and an object of the present invention is to enlarge the space on the vehicle interior side and to apply the pillar member vehicle when an external force is applied from the side of the vehicle body. An object of the present invention is to provide a coupling structure for a vehicle body skeleton member that can reduce the amount of intrusion into the room.

 In order to achieve the above object, according to the present invention, a pillar member that is disposed on both the left and right sides of the vehicle body and extends along the vehicle body vertical direction, and an upper end portion of the pillar member are coupled to each other along the vehicle body longitudinal direction. Side roof rails, roof bows arranged on the back side of the roof panel and extending in the left-right direction of the vehicle body, and the roof bows, upper ends of the pillar members, and reinforcing members for connecting the side roof rails. In the connecting structure of the vehicle body skeleton member, the reinforcing member has a fragile portion protruding outside the vehicle compartment, and a long member is loosely inserted on the inner side of the fragile portion. To

 According to the present invention, since the reinforcing member has the long member loosely inserted on the inner side of the fragile portion projecting outside the vehicle compartment, the space inside the vehicle compartment can be expanded. In addition, when an external force is applied from the side of the pillar member, the fragile portion is deformed, so that the side roof rail moves upward, so that the amount of penetration of the pillar member into the vehicle interior side can be reduced. it can.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 to 4 show an embodiment of a vehicle body skeleton member joint structure according to the present invention, FIG. 1 is a perspective view of a vehicle, FIG. 2 is a sectional view around a reinforcing member taken along line AA in FIG. 1, and FIG. 4 is an exploded perspective view of the periphery of the reinforcing member, FIG. 4 is a cross-sectional view of the periphery of the reinforcing member along the line AA in FIG. 1, (a) shows an initial state when an external force is applied from the side of the pillar member, and (b) FIG. 5 is a cross-sectional view of the reinforcing member taken along line aa, bb and cc in FIG. 3, and (a) is aa line and cc line. (B) shows a cross-sectional view taken along the line bb.

  The connecting portion structure of the vehicle body skeleton member according to the present embodiment will be described with reference to FIGS.

 The vehicle body skeleton member according to the present embodiment is disposed on both left and right sides of the roof panel 1, and is connected to the pillar member 2 constituting the first skeleton member extending in the vertical direction of the vehicle body, and the upper end portion of the pillar member 2. The side roof rail 3 constituting the second skeleton member extending along the longitudinal direction of the vehicle body on both the left and right sides of the roof panel 1, and the roof panel 1 disposed along the lateral direction of the vehicle body on the back side of the roof panel 1 These roof bows 4, pillar members 2, and side roof rails 3 are connected and joined by a reinforcing member 5.

 The pillar member 2 is formed by a pillar inner 6 and a pillar outer 7, and the side roof rail 3 is formed by a rail inner 8 and a rail outer 9 in a closed cross-sectional structure.

 In the rail inner 8, a pair of nuts 10 are welded and nut holes 12 are formed on the inner surface of the closed cross section formed by the rail outer 9. Further, a fastening hole 13 is formed in the pillar inner 6, and a fastening hole 14 is formed in the reinforcing member 5 corresponding to the nut hole 12. The reinforcing member 5, the pillar inner 6, and the rail inner 8 are fastened together by a pair of bolts 11 and nuts 10.

 One end of the reinforcing member 5 is welded to the roof bow 4, and the other end is fastened together with the pillar inner 6 and the rail inner 8, thereby connecting the roof bow 4, the pillar member 2, and the side roof rail 3. A roof harness (long member) 15 extending along the longitudinal direction of the vehicle body is disposed on the vehicle interior side of the reinforcing member 5. The reinforcing member 5 is provided with a fragile portion 16 that protrudes outside the vehicle compartment at a portion corresponding to the roof harness 15. The fragile portion 16 has a substantially U shape with a slightly smaller curvature than the diameter of the roof harness 15, and the roof harness 15 is formed so as to be loosely inserted on the inner side thereof. The roof harness 15 is arranged on the inner side of the fragile portion 16 with a slight gap from the inner peripheral surface 16a to the vehicle interior side.

 In addition, a roof trim 17 is disposed on the interior side of the roof bow 4, the fragile portion 16, and the pillar inner 6 via a spacer 18 having a predetermined thickness.

 Further, in FIG. 2, the positions of the roof trim 17 and the roof harness 15 when the fragile portion 16 is not provided are indicated by a two-dot chain line. In this case, the portion connecting the end of the roof bow 4 and the end of the pillar inner 6 in the fragile portion 16 is substantially linear in cross section, and therefore the roof trim 17 and the roof harness 15 are placed in the vehicle compartment more than the position of the present embodiment indicated by the solid line. Must be placed inside.

 Further, the reinforcing member 5 is formed in an uneven shape that repeatedly undulates along the longitudinal direction of the vehicle body. Specifically, as shown in FIG. 5 (a), which is a cross-sectional view taken along line aa and cc in FIG. 3, the cross-section when cut along the vehicle front-rear direction is a convex portion 19 protruding outward from the passenger compartment. And an inclined portion 21 extending obliquely from the convex portion 19 toward the vehicle interior side, and a concave portion 20 disposed on the innermost vehicle interior side extending continuously from the end portion of the inclined portion 21 are alternately repeated. It is formed in an uneven shape.

 Further, when the cross-sectional shape of the reinforcing member 5 is viewed along the vehicle width direction, the vicinity of the connecting portion with the end of the roof bow 4 has the uneven cross-sectional shape as shown in FIG. As it goes to the outside, it gradually changes, and in the vicinity of the fragile portion 16, as shown in FIG. 5 (b), which is a cross-sectional view taken along the line bb, it becomes a substantially flat cross-sectional shape, and further downward, the end of the pillar inner 6 In this connection part, the concavo-convex cross-sectional shape shown in FIG.

 With this configuration, as shown in FIG. 4 (a), when an external force is applied from the side of the vehicle body and a bending moment M is generated in the pillar member 2, the side roof rail 3 is moved to the vehicle interior side as the pillar member 2 is bent. Twisted into. However, due to this torsional deformation, the fragile portion 16 of the reinforcing member 5 is deformed in a direction in which the curvature increases as shown in FIG. 4 (b), so that the side roof rail 3 is obliquely above the vehicle body as indicated by the arrow. Move towards As described above, the external force applied to the vehicle body from the side is changed obliquely upward by the fragile portion 16, so that the amount of penetration of the pillar member 2 into the vehicle interior is reduced.

 Hereinafter, the effect of this embodiment will be described.

(1) Pillar member 2 that is disposed on both the left and right sides of roof panel 1 and that is formed of pillar inner 6 and pillar outer 7 and that forms a first skeleton member that extends along the vertical direction of the vehicle body, and the upper end of pillar member 2 A side roof rail 3 that forms a second frame member that extends in the longitudinal direction of the vehicle body on both the left and right sides of the roof panel 1 and is formed in a closed cross-sectional structure with a rail inner 8 and a rail outer 9. A roof bow 4 that is disposed along the left-right direction of the vehicle body on the back side of 1 and constitutes a skeleton member of the roof panel 1, and a reinforcing member that connects the roof bow 4, the upper end of the pillar member 2, and the side roof rail 3 In the connecting structure of the vehicle body skeleton member, the reinforcing member 5 protrudes from the outside of the vehicle compartment, and the roof harness 15 (long member) can be loosely inserted on the inner side thereof. Has 16. For this reason, the roof harness 15 can be arranged further outside the vehicle compartment, and the space on the vehicle interior side can be expanded. Further, when an external force is applied from the side of the pillar member 2, the amount of penetration of the pillar member 2 into the vehicle interior side can be reduced. In other words, as shown in FIG. 4 (a), when a bending moment M is generated due to an external force acting from the side, the fragile portion 16 is deformed, and the side roof rail 3 is moved upward to bend the vehicle. The moment M can be absorbed by the bending stress of the fragile portion 16, and can be dispersed into the compressive stress p and the bending stress m of the roof bow 4 as shown in FIG. 4 (b). Thereby, since the bending stress m acting on the roof bow 4 can be reduced, bending deformation of the roof bow 4 can be suppressed. As a result, the amount of penetration of the pillar member 2 into the passenger compartment can be reduced.

(2) Since the reinforcing member 5 is formed in a concavo-convex shape that repeatedly undulates along the longitudinal direction of the vehicle body, in a cross section when cut along the longitudinal direction of the vehicle rather than a member that is not formed in the concavo-convex shape Large cross section second moment. Thereby, the thickness of the reinforcing member can be reduced to reduce the weight.

1 is a perspective view of a vehicle in an embodiment of the present invention. FIG. 2 is a cross-sectional view of the periphery of a reinforcing member taken along line AA in FIG. It is a disassembled perspective view of the reinforcement member component in embodiment of this invention. 2A and 2B are cross-sectional views of the periphery of a reinforcing member taken along line AA in FIG. 1, where FIG. 1A shows an initial state when an external force is applied from the side of the pillar member, and FIG. 1B shows a state when a fragile portion is deformed. It is sectional drawing of the reinforcement member by the aa line of FIG. 3, bb line, and cc line, (a) shows sectional drawing by the aa line and cc line, (b) is by bb line A cross-sectional view is shown.

Explanation of symbols

1 Roof panel
2 Pillar member
3 Side roof rail
4 Roof bow
5 Reinforcing member
15 Roof harness (long member)
16 Vulnerable parts

Claims (2)

Pillar members disposed on the left and right sides of the vehicle body and extending along the vehicle body vertical direction;
A side roof rail coupled with the upper end of the pillar member and extending along the longitudinal direction of the vehicle body;
A roof bow disposed on the back side of the roof panel and extending along the left-right direction of the vehicle body;
These roof bows, upper ends of the pillar members, and reinforcing members that connect the side roof rails,
In the joint structure of the vehicle body skeleton member composed of
The reinforcing member has a fragile portion protruding outside the vehicle compartment,
A coupling structure for a vehicle body skeleton member, wherein a long member is loosely inserted on the inner side of the fragile portion.  2. The coupling structure for a vehicle body skeleton member according to claim 1, wherein the reinforcement member is formed with a bead extending in a lateral direction of the vehicle body.

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