CN-116890934-B - Channel reinforcing structure

Abstract

The present invention suppresses vibration of the floor tunnel when a load is input to the vehicle so that abnormal sound is not generated in the vehicle by such reinforcement that improves the rigidity of the floor tunnel. The tunnel reinforcement structure (10) is configured by a floor cross member (15 a) that extends in the vehicle width direction and connects a floor tunnel (13) to side sills (12 a) on both sides of a vehicle, the floor tunnel (13) being provided with an exhaust pipe in a tunnel that opens to the outside of the vehicle, a seat bracket (for example, a seat bracket 16 c) that is disposed in the front-rear direction of the vehicle of the floor cross member (15 a) and that is joined to the floor tunnel (13), and a1 st tunnel reinforcement member (17) that is disposed in the tunnel and that is aligned in the vehicle width direction with the floor cross member (15 a).

Inventors

• MURAMATSU YUKI
• Fuja Kota
• Yoshiki hidemasa

Assignees

• 本田技研工业株式会社

Dates

Publication Date

20260508

Application Date

20230302

Priority Date

20220331

Claims (7)

1. 1. A channel reinforcing structure, characterized by comprising: A floor tunnel extending in the front-rear direction and opening to the outside of the lower chamber of the vehicle; an exhaust pipe or a shaft member disposed in the floor tunnel; A side sill extending in the front-rear direction on the vehicle width direction outer side of the vehicle; a floor panel disposed between the floor tunnel and the side sill; A floor cross member extending in the vehicle width direction above the floor panel and connecting the floor tunnel and the side sill; a seat bracket disposed at the front and rear of the floor cross member and engaged with the floor tunnel; A1 st tunnel reinforcement member arranged in the vehicle width direction in the floor tunnel and the floor cross member; a floor frame extending in a front-rear direction at a lower outdoor side of the floor panel, and A connection bracket disposed in the floor tunnel in the vehicle width direction and connecting the exhaust pipe or the shaft member, The seat bracket is coupled with the floor frame via the floor panel and coupled with the link bracket via the floor tunnel, The seat bracket has a main body part with the floor panel as a bottom surface and formed into a hollow section, and a connecting part connected with the floor beam, The coupling portion is formed to extend so that a joint flange extending from a lower end of the main body portion along the floor panel is connected to the floor cross member.
2. 2. The channel reinforcement structure of claim 1, wherein, The floor frame extends so as to intersect with the floor cross member, and is welded to the floor cross member at an intersection portion via the floor panel.
3. 3. The channel reinforcement structure of claim 1, wherein, Has a 2 nd channel reinforcing member which is joined to a corner portion of an upper outer surface of the floor channel and extends in a longitudinal direction of the floor channel, The connection bracket is coupled to the 2 nd channel reinforcing member via the floor channel.
4. 4. The channel reinforcement structure of claim 1, wherein, The 1 st channel reinforcing member has: an upper member disposed on an upper side of the floor tunnel in a middle position in a height direction of the floor tunnel and having a shape forming a closed cross section together with the floor tunnel, and And a lower member disposed below the upper member and having a shape that is inclined upward from below a side wall of the floor tunnel toward the vehicle width middle.
5. 5. The tunnel reinforcement structure according to claim 4, wherein, The lower member has a pair of truss sections in truss form connecting the side walls of the floor tunnel on both sides in the vehicle width direction and the upper member in an inclined manner, respectively, in the interior of the floor tunnel, and a connecting section connecting the pair of truss sections to each other, The coupling portion is disposed along a lower surface of the upper member.
6. 6. The tunnel reinforcement structure according to claim 5, wherein, The truss section has: A1 st joint part joined with the lower surface of the floor panel, and And a 2 nd joint part jointed with the side wall of the floor channel.
7. 7. The channel reinforcement structure of claim 1, wherein, The coupling bracket has a partition portion that engages with the side wall and the top of the floor tunnel and partitions the interior of the floor tunnel.

Description

Channel reinforcing structure Technical Field The present invention relates to a tunnel reinforcement structure that is reinforced so as not to cause vibration of a floor tunnel due to an input load to a vehicle. Background Conventionally, a floor tunnel has a structure described in patent document 1, for example. In this structure, the rigidity of the side sills joined to both sides of the vehicle with respect to the floor panel is set to be higher than that of the floor tunnel joined to the floor panel, and the rigidity adjustment holes are provided in the front and rear walls of the seat brackets on the side of the side sills, whereby the dynamic performance at the time of running is maintained and the vehicle body mass is reduced. Prior art literature Patent literature Patent document 1 Japanese patent application laid-open No. 2017-87814 Disclosure of Invention However, the structure described in patent document 1 has a problem that when the rigidity of the floor tunnel is low, the floor tunnel is deformed by a collision of a vehicle or the like, and when the floor tunnel vibrates due to vibration input through an exhaust pipe and a shaft member disposed in the tunnel during traveling, abnormal noise is generated in the vehicle. The present invention has been made in view of such circumstances, and an object thereof is to provide a tunnel reinforcement structure capable of suppressing vibration of a floor tunnel so that abnormal sound is not generated in a vehicle when a load is input to the vehicle by such reinforcement that the rigidity of the floor tunnel is improved. In order to achieve the above object, a tunnel reinforcement structure according to the present invention includes a floor tunnel extending in a front-rear direction and opening to a lower outdoor side of a vehicle, an exhaust pipe or a shaft member disposed inside the floor tunnel, a side sill extending in the front-rear direction outside the vehicle width direction, a floor panel disposed between the floor tunnel and the side sill, a floor cross member extending in the vehicle width direction above the floor panel and connecting the floor tunnel and the side sill, a seat bracket disposed in front-rear of the floor cross member and joining the floor tunnel, a 1 st tunnel reinforcement member disposed inside the floor tunnel and arranged in the vehicle width direction with the floor cross member, a floor frame extending in front-rear direction outside the lower outdoor side of the floor panel, and a connecting bracket disposed inside the floor tunnel and connecting the exhaust pipe or the shaft member in the vehicle width direction, the seat bracket being coupled to the floor frame via the floor panel and the connecting bracket via the floor tunnel. Effects of the invention In the present invention, it is possible to obtain a tunnel reinforcement structure capable of suppressing vibration of the floor tunnel so that abnormal sound is not generated in the vehicle when a load is input to the vehicle by such reinforcement that the rigidity of the floor tunnel is improved. Drawings Fig. 1 is a perspective view showing a tunnel reinforcement structure on a floor panel in a vehicle according to the present embodiment. Fig. 2 is a perspective view showing a channel reinforcing structure on a floor panel. Fig. 3 is a plan view showing the cross structure of the cross member and the floor frame. Fig. 4 is a cross-sectional view of IV-IV of fig. 3. Fig. 5 is a perspective view showing truss sections of the upper member and the lower member in the 1 st channel reinforcing member in the floor channel. Fig. 6 is a VI-VI cross-sectional view of the floor tunnel shown in fig. 3. Fig. 7 is a perspective view showing the structure of the connecting bracket as seen from the front side to the obliquely rear side in the cross section of the floor tunnel shown in fig. 6. Description of the reference numerals 10-Channel reinforcing structure 11 Floor panel 12A, 12b side sills 13 Floor tunnel 13A side wall 13B top 14A, 14b floor frame 15A, 15b floor cross beam 16 A-16 d seat bracket 16C3 connecting portion 16C4 main body 16C5 engagement flange 17 1 St channel reinforcing member 17A upper part 17B lower part 17T1, 17t2 truss sections 17C connecting portion 18-Link bracket 18A partition 19 Nd channel reinforcing member Detailed Description < Constitution of embodiment > An embodiment of the present invention will be described in detail with reference to fig. 1 to 7. In the description, the same elements are denoted by the same reference numerals, and duplicate description thereof is omitted. In each of the drawings, "front and rear" indicated by an arrow indicates a front and rear direction of an automobile (not shown), right and left indicates a width direction of the automobile, and up and down indicates a vertical up and down direction. Fig. 1 is a perspective view showing a tunnel reinforcement structure on a floor panel in a vehicle. The tunnel reinforcem