CN110077289B

CN110077289B - Vehicle seat fixing structure

Info

Publication number: CN110077289B
Application number: CN201910051702.5A
Authority: CN
Inventors: 葛西智志
Original assignee: Toyota Motor Corp
Current assignee: Toyota Motor Corp
Priority date: 2018-01-26
Filing date: 2019-01-21
Publication date: 2022-01-04
Anticipated expiration: 2039-01-21
Also published as: JP7031329B2; JP2019127226A; CN110077289A

Abstract

The invention provides a fixing structure of a vehicle seat, which can inhibit the vibration and/or noise of the seat compared with the prior art. A rear inner seat bracket (14) connects the rear ends of the vehicle width direction inner sides of the bottom surfaces (28) of a left seat (18A) and a right seat (18B) to a floor panel (20). A rear inner seat bracket (14) is formed by integrating an inner left bracket (14A), an inner right bracket (14B) and a connecting part (14C), wherein the inner left bracket (14A) connects the rear end of the inner side of the bottom surface (28) of a left seat (18A) in the vehicle width direction with a floor (20), the inner right bracket (14B) connects the rear end of the inner side of the bottom surface (28) of a right seat (18B) in the vehicle width direction with the floor (20), and the connecting part (14C) is arranged between the inner left bracket (14A) and the inner right bracket (14B) and connects the inner left bracket (14A) and the inner right bracket (14B).

Description

Vehicle seat fixing structure

Technical Field

The present invention relates to a vehicle seat fixing structure.

Background

The vehicle seat is fixed to a floor panel, which is a floor surface of the vehicle, via a fixing structure. As this fixing structure, for example, as in patent document 1, a seat bracket is used in which the front, rear, left, and right corners of the vehicle seat bottom are connected to the floor panel.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication No. 2016-97874

Disclosure of Invention

Problems to be solved by the invention

During travel on a poor road (japanese: oncon road), during cornering, etc., a load is input from the seat to the seat bracket in accordance with the weight of the occupant. The seat bracket, the floor panel, and the like deform in accordance with the input load. As a result, there is a possibility that the deformation may cause seat Vibration, so-called NV (Noise, Vibration) characteristics such as Noise generated between the seat bracket and a member (floor panel, seat rail, or the like) fastened to the seat bracket to deteriorate. Accordingly, an object of the present invention is to provide a vehicle seat fixing structure that can suppress the occurrence of vibration and/or noise of the seat compared to the conventional one.

Means for solving the problems

The present invention relates to a vehicle seat fixing structure that fixes a left seat disposed on a left side of a vehicle compartment and a right seat disposed on a right side of the vehicle compartment so as to be aligned with the left seat in a vehicle width direction to a floor of the vehicle compartment. The fixing structure includes an outer seat bracket and an inner seat bracket. The outer seat bracket connects front and rear ends of the vehicle width direction outer sides of the left and right seat bottom surfaces to the floor. The inner seat bracket connects the front and rear ends of the left and right seat bottom surfaces on the inner side in the vehicle width direction to the floor. The rear inner seat bracket of the inner seat bracket, which connects the rear ends of the vehicle width direction inner sides of the left and right seat bottom surfaces to the floor, is formed by integrating an inner left bracket, which connects the rear end of the vehicle width direction inner side of the left seat bottom surface to the floor, an inner right bracket, which connects the rear end of the vehicle width direction inner side of the right seat bottom surface to the floor, and a connecting portion, which is provided between the inner left bracket and the inner right bracket and connects the two.

According to the above configuration, when a load is input from the right seat to the inner right bracket, for example, the load is dispersed to the inner left bracket via the coupling portion. By dispersing the load, the amount of deformation of the inner right bracket and the peripheral structure thereof is reduced, and as a result, the generation of vibration and/or noise of the seat can be suppressed as compared with the conventional one.

In addition, in the above invention, a floor tunnel reinforcement, which is a reinforcement member that protrudes in the height direction and is provided to extend in the vehicle front-rear direction, may be provided at the vehicle width direction center of the floor panel. In this case, the rear end of the floor tunnel reinforcement may be disposed forward of the rear inner seat bracket.

In the vehicle front collision, the floor tunnel reinforcement is pushed rearward, but the rearward inner seat bracket is disposed behind the rear end of the floor tunnel reinforcement to prevent the floor tunnel reinforcement from moving rearward, thereby suppressing a reduction in the vehicle interior space in the front collision.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, the generation of vibration and/or noise of the seat can be suppressed compared to the conventional one.

Drawings

Fig. 1 is a perspective view illustrating a vehicle seat fixing structure and a peripheral structure thereof according to the present embodiment.

Fig. 2 is a perspective view illustrating an inner seat bracket and a peripheral structure thereof.

Fig. 3 is a diagram illustrating seat vibration based on a conventional vehicle seat fixing structure.

Fig. 4 is a diagram illustrating seat vibration based on the fixing structure of the vehicle seat according to the present embodiment.

Description of the reference numerals

10 outer seat brackets, 12 front inner seat brackets, 14 rear inner seat brackets, 14A inner left brackets, 14B inner right brackets, 14C links, 14D flanges, 16 seat position mechanisms, 18A left seats, 18B right seats, 20 floor panels, 22 floor channels, 24 floor channel reinforcements, 26 seat slide mechanisms, 26A slide rails, 26B slide blocks, 27 seat cross beams, 28 seat bottom surfaces, 30 seat tubes, 32 rocker panels (english: rocker).

Detailed Description

Referring to fig. 1 to 4, a fixing structure of a vehicle seat according to the present embodiment will be described. In fig. 1 to 4, the vehicle longitudinal direction (hereinafter, simply referred to as the longitudinal direction) is indicated by an axis indicated by a symbol FR, the vehicle width direction (hereinafter, simply referred to as the width direction) is indicated by an axis indicated by a symbol RW, and the vertical direction is indicated by an axis indicated by a symbol UP. Symbol FR is abbreviated as Front, and the Front-rear direction axis FR is a positive direction with respect to the vehicle Front. The symbol RW is abbreviated as Right Width, and the Width direction axis RW is a positive direction in the Right Width direction. The upward direction of the height axis UP is a positive direction.

As shown in FIG. 1, the FR, RW and UP axes are orthogonal to each other. Hereinafter, when the framework structure of the vehicle front portion of the present embodiment is described, the description will be appropriately made with reference to these 3 axes. For example, the "front end" refers to an end of any member on the FR axis positive direction side, and the "rear end" refers to an end of any member on the FR axis negative direction side. The "widthwise inner side" means the widthwise inner side relative to the vehicle along the RW axis, and the "widthwise outer side" means the widthwise outer side relative to the vehicle along the RW axis. The "upper side" means a positive direction side with respect to the UP axis, and the "lower side" means a negative direction side with respect to the UP axis.

Fig. 1 is a perspective view illustrating a vehicle interior including the vehicle seat fixing structure according to the present embodiment. The vehicle seat fixing structure of the present embodiment includes an outer seat bracket 10, a front inner seat bracket 12, a rear inner seat bracket 14, and a seat position mechanism 16. This fixed structure fixes a left seat 18A, which is a vehicle seat and is disposed on the left side of the vehicle compartment, and a right seat 18B, which is disposed on the right side of the vehicle compartment so as to be aligned with the left seat 18A in the vehicle width direction, to the floor panel 20.

The floor panel 20 is a plate member constituting a floor surface of a vehicle compartment. In the widthwise center of the floor panel, a floor tunnel 22 is provided which protrudes in the height direction and extends in the front-rear direction. Further, as a part of the floor tunnel 22, a floor tunnel reinforcement 24 as a reinforcing member is provided.

As illustrated in fig. 2, the floor tunnel reinforcement 24 is provided at a front portion of the floor tunnel 22. The floor tunnel reinforcement 24 increases the rigidity of the floor surface of the vehicle interior, and prevents devices such as a rotating electric machine from entering (alternating) from the engine room in front of the vehicle interior toward the vehicle interior during a frontal collision of the vehicle, thereby suppressing a reduction in the vehicle interior space.

Conventionally, the floor tunnel 22 is provided with an exhaust pipe or the like for sending exhaust gas discharged from an internal combustion engine mounted in an engine room in front of a vehicle cabin rearward. However, for example, in the case where the vehicle mounted with the seat fixing structure of the present embodiment is an electric vehicle or a fuel cell vehicle, that is, in the case where the vehicle is not mounted with an internal combustion engine, exhaust gas is not generated, and therefore, the exhaust pipe is omitted. Accordingly, the front-rear length and/or height of the floor tunnel 22 can be shortened and reduced compared to the conventional ones. Instead of the exhaust duct, a battery module, a high-voltage cable, or the like may be disposed in the floor tunnel 22.

For example, the rear end of the floor tunnel reinforcement 24 is disposed between the left seat 18A and the right seat 18B and in the middle in the front-rear direction of these seats. For example, as illustrated in fig. 2, a seat cross member 27 as a framework member is provided to extend in the width direction at the lower portion of the left seat 18A and the right seat 18B. The rear end of the floor tunnel reinforcement 24 is disposed forward of the seat cross member 27.

Returning to fig. 1, the left seat 18A and the right seat 18B may be, for example, front seats of a vehicle cabin. In fig. 1, only the seat cushion as a seating surface is shown for the left seat 18A and the right seat 18B, and the seat back as a backrest is not shown.

The seat position mechanism 16 adjusts the positions of the left seat 18A and the right seat 18B. The seat position mechanism 16 includes, for example, a seat slide mechanism 26 for adjusting the front-rear positions of the left seat 18A and the right seat 18B, a lift mechanism for adjusting the up-down position of the seat cushion, and a reclining mechanism for adjusting the angle of the seat back. In addition, in order to simplify the illustration, in fig. 1, only the seat slide mechanism 26 among the above-described three mechanisms is illustrated.

The seat slide mechanism 26 includes a slide rail 26A and a slider 26B. The slide rails 26A are provided at both ends in the width direction of the bottom surface 28 of the left seat 18A and the right seat 18B. The slide rail 26A extends in the front-rear direction, and is configured to have a length in the front-rear direction longer than the length in the front-rear direction of the left seat 18A and the right seat 18B in order to ensure a seat movement width.

The sliders 26B are provided at both ends in the width direction and at the front and rear ends of the bottom surface 28 thereof together with the left and

right seats

18A, 18B. That is, the sliders 26B are provided at the front, rear, left, and right corners of the bottom surfaces of the left seat 18A and the right seat 18B. Between the left and right rear sliders 26B, a seat tube 30 is provided as a widthwise reinforcing member for the left seat 18A and the right seat 18B. The slider 26B is movable in the front-rear direction along the slide rail 26A, and by this movement, the left seat 18A and the right seat 18B can move forward and backward.

Seat brackets are provided at the front and rear ends of the slide rail 26A. Specifically, the

outer seat brackets

10A, 10B are provided at the front and rear ends of the slide rail 26a1 provided on the outer sides in the width direction of the bottom surfaces 28 of the left and

right seats

18A, 18B. The front inner seat bracket 12 and the rear inner seat bracket 14 are provided at the front and rear ends of the slide rail 26a2 provided on the inner sides in the width direction of the bottom surfaces 28 of the left seat 18A and the right seat 18B.

The

outer seat brackets

10A, 10B connect the front and rear ends of the bottom surface 28 of the left seat 18A and the right seat 18B on the outer side in the vehicle width direction to the floor panel 20 via the seat slide mechanism 26.

Of the

outer seat brackets

10A, 10B, the outer seat bracket 10A at the front is provided on a seat cross member 27 as a framework member extending in the vehicle width direction. Further, the widthwise outer side of the rear outer seat bracket 10B is joined to rocker panels 32 as framework members provided on both sides in the vehicle width direction and extending in the front-rear direction. The bonding may be, for example, welding, and the welding points are denoted by x marks in fig. 1 and 2. In this way, by joining the bracket to the frame member, the fluctuation of the bracket at the time of load input can be suppressed.

The front inner seat bracket 12 is provided at the front end of a slide rail 26a2, and the slide rail 26a2 is provided on the inner side in the width direction of the bottom surface 28 of the left seat 18A and the right seat 18B. That is, the front inner seat bracket 12 connects the vehicle width direction inner side and front end portions of the bottom surfaces 28 of the left and

right seats

18A and 18B to the floor panel 20 via the seat slide mechanism 26. The front inner seat bracket 12 is provided on a seat cross member 27 as a framework member extending in the vehicle width direction.

The rear inner seat bracket 14 is provided at the rear end of the slide rail 26a 2. That is, the rear inner seat bracket 14 connects the vehicle width direction inner side and rear end portions of the bottom surfaces 28 of the left and

right seats

18A and 18B to the floor panel 20 via the seat slide mechanism 26.

The rear inner seat bracket 14 is a single member formed by integrating the inner left bracket 14A, the inner right bracket 14B, and the connecting portion 14C. The inner left bracket 14A connects the vehicle width direction inner side and rear portion of the bottom surface 28 of the left seat 18A to the floor panel 20 via the seat slide mechanism 26. Similarly, the inner right bracket 14B connects the vehicle width direction inner side and rear portion of the bottom surface 28 of the right seat 18B to the floor panel 20 via the seat slide mechanism 26. The connecting portion 14C is a bridging member provided between the inner left bracket 14A and the inner right bracket 14B to connect the two.

As illustrated in fig. 2, between the inner left bracket 14A and the inner right bracket 14B, a rear portion of the floor tunnel 22 protrudes in the height direction. The top surfaces of the inner left bracket 14A and the inner right bracket 14B are provided to protrude in the height direction from the top surface of the floor tunnel 22, and the coupling portion 14C is provided to straddle the floor tunnel 22. That is, the rear inner seat bracket 14 has a curium (Japanese: (かす "" い)) shape in the rear view. Bolt holes for coupling to the slide rails 26a2 are formed in the top surfaces of the inner left bracket 14A and the inner right bracket 14B.

The rear inner seat bracket 14 is formed by press-forming a metal material such as aluminum. The rear inner seat bracket 14 is formed into a box shape by, for example, press forming, and is assembled so that a box-shaped opening is laid over the floor panel 20 (and the floor tunnel 22). Thereby, a closed cross-sectional structure is formed, and rigidity is ensured.

A seat cross member 27 as a framework member extending in the width direction is disposed in front of the rear inner seat bracket 14. As described above, the rear end of the floor tunnel reinforcement 24 is also disposed in front of the seat cross member 27. That is, immediately behind the rear end of the floor tunnel reinforcement 24 extending in the front-rear direction, a seat cross member 27 as a framework member and a rear inner seat bracket 14 as a fixing member extending in the width direction are provided.

With such an arrangement, when the floor tunnel reinforcement 24 is retracted in a forward collision of the vehicle, the seat cross member 27 and the rear inner seat bracket 14 receive the floor tunnel reinforcement 24 and suppress further retraction of the floor tunnel reinforcement 24. By suppressing the retreat of the floor tunnel reinforcement 24, the reduction of the vehicle interior space can be suppressed.

Further, a plurality of flanges 14D for engagement are formed on the rear inner seat bracket 14. The rear inner seat bracket 14 is joined to the seat cross member 27 via a flange 14D. By joining the seat cross member 27 as a frame member, the fluctuation of the rear inner seat bracket 14 can be suppressed, and the rigidity thereof can be ensured.

< action of suppressing vibration of vehicle seat fixing Structure >

The vibration suppressing action of the vehicle seat fixing structure according to the present embodiment will be described with reference to fig. 3 and 4. Fig. 3 shows an example in which the inner seat brackets are not coupled and are provided separately (separately) in the

seats

18A and 18B.

For example, when a downward load is generated in the right seat 18B, the load is transmitted to the outer seat bracket 10B and the inner seat bracket 100. Since the outer seat bracket 10B is joined to the rocker panel 32, the fluctuation of the outer seat bracket 10B can be suppressed. On the other hand, the inner seat bracket 100 sinks downward together with the floor panel 20 as a relatively thin panel member. As a result, the right seat 18B sinks so as to be inclined inward in the width direction.

In contrast, as illustrated in fig. 4, according to the rear inner seat bracket 14 of the present embodiment, when a downward load is generated from the right seat 18B, the load is transmitted to the inner right bracket 14B, and a part of the load is also dispersed to the connecting portion 14C and the inner left bracket 14A. For example, when the inner right bracket 14B is about to sink downward, an upward stress resisting bending deformation in the downward direction is generated in the coupling portion 14C. This can suppress the sinking of the inner right bracket 14B, and as a result, can suppress the vibration of the right seat 18B. Since vibration can be suppressed, noise caused by the vibration can also be reduced.

As described above, according to the rear inner seat bracket 14 of the present embodiment, the load generated in one of the left seat 18A and the right seat 18B is dispersed to the other seat bracket. Therefore, particularly in a situation where the occupant sits on only one of the left seat 18A and the right seat 18B and the other is an empty seat, the vibration of the seats can be effectively suppressed.

< other embodiment >

In the above embodiment, the rear inner seat bracket 14 is a single member obtained by connecting the inner left bracket 14A and the inner right bracket 14B, but is not limited to this form. For example, the front inner seat bracket 12 may have the same structure. In the above-described embodiment, the left seat 18A and the right seat 18B have been described as front seats, but the present invention is not limited to this embodiment. In short, the left and right seats may be fixed to the floor panel 20 via seat brackets, and the left seat 18A and the right seat 18B may be rear seats, for example.

Claims

1. A vehicle seat fixing structure that fixes a left seat disposed on a left side of a vehicle compartment and a right seat disposed on a right side of the vehicle compartment so as to be aligned with the left seat in a vehicle width direction to a floor of the vehicle compartment,

the vehicle seat fixing structure includes:

an outer seat bracket that connects front and rear ends of the vehicle width direction outer sides of the left and right seat bottom surfaces to the floor; and

an inner seat bracket that connects front and rear ends of the left and right seat bottom surfaces on an inner side in a vehicle width direction to the floor,

a rear inner seat bracket of the inner seat brackets, which connects the rear ends of the vehicle width direction inner sides of the left and right seat bottom surfaces to the floor, is formed by integrating an inner left bracket, an inner right bracket, and a connecting portion, the inner left bracket connecting the rear end of the vehicle width direction inner side of the left seat bottom surface to the floor, the inner right bracket connecting the rear end of the vehicle width direction inner side of the right seat bottom surface to the floor, the connecting portion being provided between and connecting the inner left bracket and the inner right bracket,

a floor tunnel reinforcement that is a reinforcement member that protrudes in the height direction and is provided so as to extend in the vehicle front-rear direction is provided at the vehicle width direction center of the floor panel,

a seat cross member that is a frame member provided to extend in the width direction at a lower portion of the left seat and the right seat is disposed forward of the rear inner seat bracket,

and the rear end of the floor tunnel reinforcement is disposed in front of the seat cross member.