JPH0612268U - Lower car body structure - Google Patents

Abstract

(57) [Abstract] [Purpose] In a vehicle body in which a floor panel and a front frame are arranged offset from each other, while ensuring vehicle body rigidity, strength at the time of collision is ensured, ground height is lowered, and passenger An object of the present invention is to provide a lower body structure of an automobile capable of increasing a hip point. A structure in which an open cross section of a front frame 6 is joined to a floor panel 1 via a vertical wall 71 of a plate member 7 in an offset manner, and a wheel house 5 extends below the floor panel 1. The front frame 6, the floor panel 1, and the wheel house 5 are joined by a plate member 7 or a reinforcing member such as a torque box 8 to secure the rigidity of the vehicle body and the strength at the time of collision. The ground clearance can be lowered and the hip point of the passenger can be increased.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a lower body structure of an automobile for a body structure near a wheel house.

[0002]

[Prior art]

 Conventionally, in the lower body structure of an automobile, a side sill is located above the floor panel, the lower surface of the floor panel is joined to the open side of the floor frame, and these are joined to a wheel house projecting into the vehicle interior. (See, for example, Japanese Utility Model Laid-Open No. 2-76591).

[0003]

[Problems to be solved by the device]

 However, in the above-mentioned conventional lower body structure, the position of the floor frame is determined from the ground height determined based on the engine placement and other conditions, and in comparison with this, in the vehicle type in which the hip point of the occupant needs to be increased, The heights of the floor panel and the cross-section open side of the floor frame are different, and the open cross-section of the floor frame is joined to the floor panel through the vertical wall in an offset manner, and the wheel house is extended below the floor panel. In the vehicle body, the joints of the floor frame, floor panel and wheel house are not concentrated in one place. Since the parts are arranged separately, the strength at the time of a collision is insufficient, or There is a problem that there is a possibility that the results in a foot.

The object of the present invention is to provide a vehicle body in which a floor panel and a floor frame are arranged with a downward offset, while ensuring vehicle body rigidity, ensuring strength at the time of a collision, and reducing the ground height. An object of the present invention is to provide a lower body structure of an automobile that can increase the hip point of a passenger.

[0005]

[Means for Solving the Problems]

 The lower body structure of an automobile according to the present invention is one in which an open cross section of a floor frame is connected to a floor panel via a vertical wall so as to be offset downward, and a wheel house is extended below the floor panel. The floor frame, floor panel, and wheel house are connected by a plate or a reinforcing member such as a torque box, which secures the rigidity of the vehicle body while ensuring the strength at the time of a collision. It is possible to lower the hip and increase the hip point of the occupant.

[0006]

【Example】

 Referring to the drawings, an embodiment of the present invention will be described. FIG. 1 is a perspective view of the vicinity of a right front wheel house. A tip of a floor panel 1 is joined to a dash panel 2 and a side edge of a floor panel 1 is a step 11. Is connected to the side sill 3 at a lower position, the tip of the side sill 3 continues to the base of the front pillar 4, and the wheel house 5 of the right front wheel has its upper part slightly protruding above the floor panel 1. ing.

The cross-section is formed in a U shape with an open upper part, and the floor frame 6 extending in the vehicle front-rear direction is arranged in a shape offset to a height different from the floor panel 1 (approximately the same height as the side sill 3). The floor frame 6 is connected to the floor panel 1 and the wheel house 5 by a plate member 7 and a torque box 8.

As shown in FIGS. 2 and 3, the plate member 7 includes a vertical wall portion 71, an upper flange 72 provided at an upper edge of the vertical wall portion 71, a lower flange 73 provided at a lower edge, and a vertical flange portion 73. A reinforcing plate portion 74 having a substantially triangular shape bent at a right angle to the tip of the wall portion 71 and having sides along the shape of the wheel house 5, a flange 75 provided on the upper edge of the reinforcing plate portion 74, It is formed of a reinforcing flange 76 that protrudes forward from the strong plate portion 74 and is formed into a curved surface that follows the shape of the wheel house 5.

The lower flange 73 of the plate member 7 is coupled to the upper surface of the open side flange 61 above the floor frame 6, and the vertical flange 62 extending upward from the floor frame 6 is joined to the side surface of the vertical wall portion 71 to form an upper flange. 72 is joined to the lower surface of the floor panel 1, and the floor panel 1 and the floor frame 6 are offset together and coupled via the vertical wall portion 71 of the plate member 7, and the reinforcement plate portion 74 of the plate member 7 is The flange 75 provided on the upper edge is joined to the dash panel 2, and the reinforcing flange 76 is joined to the outer surface of the wheel house 5 to reinforce this joint portion.

The torque box 8 has a substantially U-shaped cross section, and as shown in FIG. 4, a vertical wall is formed at the rear edge of the horizontal portion 80 which extends in the vehicle width direction and tapers outward in the vehicle width direction. The portion 81 is erected, the flange 83 is provided on the inner edge in the vehicle width direction of the vertical wall portion 81, the flange 84 is provided on the upper edge, and the flange 85 and the flange 86 are provided on the outer edge in the vehicle width direction which is cut in steps. A curved wall portion 82 is erected on the front edge of the horizontal portion 80, a flange 87 is provided on the inner side edge of the curved wall portion 82 in the vehicle width direction, and a flange 88 and a flange 89 are provided on the outer side edge of the vehicle body width stepped. Is provided. 809 is a bead formed on the horizontal portion 80.

The flanges 83 and 87 on the inner edge of the torque box 8 in the vehicle width direction are joined to the vertical wall portion 71 of the plate member 7 and the outer surface of the floor frame 6 in the vehicle width direction. Is joined to the outer surface of the vehicle to form a closed cross section, and the flanges 85, 86, 88, 89 at the outer edge in the vehicle width direction are joined to the lower surface of step 11, which is the joint between the floor panel 1 and the side sill 3, The floor panel 1, the wheel house 5 and the floor frame 6 are firmly connected.

[0012]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects. The open cross section of the floor frame is connected to the floor panel through the vertical wall in an offset manner, and the wheel house extends below the floor panel. The floor frame, floor panel, and wheel house The passengers are connected by a plate or a reinforcing member such as a torque box, which secures the rigidity of the vehicle body, secures the strength at the time of a collision, lowers the ground height, and increases the hip point of the occupant. can do.

[Brief description of drawings]

FIG. 1 is a perspective view of a lower body structure of an automobile according to the present invention.

FIG. 2 is a perspective view of a plate member according to the present invention.

3 is a sectional view taken along the line III-III in FIG.

FIG. 4 is a perspective view of a torque box according to the present invention.

[Explanation of symbols]

 1 Floor panel 2 Dash panel 3 Side sill 5 Wheel house 6 Floor frame 7 Plate member (reinforcing member) 8 Torque box (reinforcing member)

Claims (3)

[Scope of utility model registration request] 1. An open cross-section of a floor frame is joined to a floor panel via a vertical wall in a downwardly offset manner,
A lower vehicle body structure for an automobile, wherein a wheel house is extended below a floor panel, and a floor frame, a floor panel, and a wheel house are connected by a reinforcing member. 2. The lower body structure for an automobile according to claim 1, wherein the reinforcing member is formed of a plate. 3. A closed cross section is formed by forming the reinforcing member by a torque box having a substantially U-shaped cross section, and connecting the reinforcing member to the floor frame, the floor panel and the wheel house. The lower body structure of the described vehicle.