JP6794733B2 - Seat mounting structure - Google Patents

Description

The present invention relates to a structure Mounting sheet, more particularly, to install them structure seat bracket for supporting the seat to the floor panel.

In some cases, a cross member is installed at a position where the front floor panel and the rear floor panel are connected, and a seat is attached to the cross member (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2011-173506

In the conventional structure as described above, it is necessary to further improve the mounting rigidity and vibration resistance of the seat.

The present invention has been made in view of such an actual situation, and an object of the present invention is to further improve the mounting rigidity and vibration resistance of the seat without depending on the strength of the floor panel when the seat is mounted on the floor panel. It is to provide a seat mounting structure which can be made to.

In order to solve the above problems, the seat mounting structure according to the present invention is
A seat (1) arranged in a floor area including a step portion (7) formed on the central side in the vehicle width direction at the rear of the passenger compartment floor and a step upper surface (7') extending rearward from the upper end of the step portion. ) Mounting structure
A cross member (8) extending in the vehicle width direction toward the front surface of the step portion and forming a closed cross section with the floor panel constituting the step portion,
A first mounting portion (8 g) for supporting and fixing the front end portion on the vehicle width direction of the seat at the center portion (8a) of the cross member in the vehicle width direction, and
Is joined to the floor panel in the vehicle width direction outer side of the stepped portion, the seat bracket having a second mounting portion for the vehicle width direction Kosoto side front end portion for supporting fixation of the seat (1) (4f) (4 ) When,
In those that have
The cross member (8) extends from the central side portion (8a, 8b) in the vehicle width direction forming the closed cross section to the outside in the vehicle width direction of the step portion, and the front wall portion (4) of the seat bracket (4). It has a front wall portion (8c) and an upper surface portion (8c; 8d) that are overlapped and joined to the upper surface portion (4a) with the 4b), and the seat bracket (4) is formed by the cross member (8b) to form the step. It is characterized in that it is connected to the part (7).

In the seat mounting structure according to the present invention, the front wall portion of the seat bracket and the upper surface portion is reinforced by a cross member which constitutes a closed cross section, it is possible to enhance the mounting rigidity, without relying on the strength of the floor panel, the seat mounting rigidity and vibration resistance can be improved.

It is a perspective view which shows one Embodiment of the seat mounting structure which concerns on this invention. Shows an embodiment of a seat mounting structure according to the present invention, is a perspective view of removal of the sheet. Shows an embodiment of a seat mounting structure according to the present invention, is a front view obtained by removing the sheet. Shows an embodiment of a seat mounting structure according to the present invention, is a side view the removal of the sheet. It is a perspective view which shows the seat bracket which concerns on one Embodiment of the seat mounting structure which concerns on this invention. FIG. 2 is a cross-sectional view taken along the line AA in FIG. FIG. 6 is an enlarged cross-sectional view showing a portion surrounded by a circle indicated by an arrow B in FIG. FIG. 2 is a cross-sectional view taken along the line CC in FIG. FIG. 8 is an enlarged cross-sectional view showing a portion surrounded by a circle indicated by an arrow D in FIG.

Hereinafter, an embodiment of the seat mounting structure according to the present invention will be described.
In the seat mounting structure according to the present embodiment, as shown in FIGS. 1 to 7, the rear seat 1 is mounted on the floor panel 3 via the pair of seat rails 2 . Seat rails 2 located outward in the vehicle width direction is to be attached to the floor panel 3 with a seat bracket 4. In the drawing, the direction indicated by the arrow Fr indicates the front of the vehicle.

The floor panel 3 is composed of a front panel 5 and a rear panel 6. A step portion 7 is provided between the front panel 5 and the rear seat 1, and a cross member 8 extending in the vehicle width direction is installed in the step portion (see FIGS. 1 and 2). The cross member 8 is composed of three members, a central portion 8a and left and right side portions 8b, and the central portion 8a and the left and right side portions 8b are partially overlapped and joined to be integrated. (See Figures 1 to 3).

The seat bracket 4 is formed in a substantially inverted L-shape in cross section so as to extend upward from the floor panel 3 and have an upper surface portion 4a on the top thereof, and further, a front wall portion 4b is provided on the front side of the vehicle, and the vehicle width. A side surface portion 4c is provided on the outer side in the direction, and flanges 4d and 4d for fixing to the floor panel 3 are provided on the front and side of the lower end thereof (see FIG. 5).

The cross member 8 is arranged on the stepped portion 7 of the floor panel 3 from the vehicle interior side, and is fixed to the floor panel 3 together with the seat bracket 4. As a result, a closed cross section is formed by the cross member 8 and the stepped portion 7 of the floor panel 3 (see FIGS. 8 and 9 ).

The seat bracket 4 is located at the outer end 8c of the cross member 8 in the vehicle width direction and is fixed to the floor panel 3 . Upper surface portion 4a of the seat bracket 4 overlaps the upper surface portion 8d of the cross member 8, the front wall portion 4b of the seat bracket is a main power sale case overlap the wall section 8f before contacting the top portion 8d and the lower end portion 8e of the cross member It is attached to (see FIGS. 1 to 4).

Further, the seat bracket 4 is provided with a hole 4e in which the positioning pin 9 installed on the front side of the seat rail 2 is inserted in the upper surface portion 4a thereof. Further, the front end of the seat rail 2 is extended forward end portion 2a so as to be inclined downwardly, the said front end, holes for inserting the bolts 10 is kicked set, correspondingly, The front wall portion 4b of the seat bracket 4 is provided with a hole 4f through which the bolt 10 is inserted , and the front wall portion 8f of the cross member 8 is provided with a hole 8g.

When the rear seat 1 is installed on the floor panel 3, the positioning pin 9 previously attached to the seat rail 2 is inserted into the hole 4e of the seat bracket 4, and further inserted into the hole of the front end 2a of the seat rail 2. The bolt 10 is inserted into the hole 8g of the cross member 8 and the hole 4f of the seat bracket 4 and fastened to the nut 12 on the back side of the seat bracket 4. By fastening the bolt 10, the front end portion 2a of the seat rail 2 is fixed to the front wall portion 4b of the seat bracket 4, whereby the attachment of the rear seat 1 to the floor panel 3 is completed. In FIG. 7, reference numeral 11 denotes a washer that is interposed between the cross member 8 and the front end portion 2a of the seat rail 2 when the bolt 10 is inserted into the hole 4f of the seat bracket 4.

When attaching the seat bracket 4 and the cross member 8 to the floor panel 3, the seat bracket 4 is once joined to the cross member 8 and then the seat bracket 4 is attached to the floor panel 3 together with the cross member 8. Is preferable in terms of work efficiency.

In the present embodiment, the underpinning while reinforcing the upper surface 4a of the seat bracket 4 by a cross member 8 which constitutes a closed cross section, it is possible to enhance the mounting rigidity of the seat rail 2 by the seat bracket. Therefore, when the seat 1 is installed on the floor panel 3, the support strength of the seat 1 can be tuned only by adjusting the cross member 8 without depending on the strength of the floor panel 3. Therefore, the seat 1 can be tuned. Seat mounting-related performance such as mounting rigidity and vibration resistance can be easily adjusted, and accuracy control of the mounting position of the rear seat 1 becomes easy.

Further, in the present embodiment, since the upper surface portion 4a of the seat bracket 4 is connected to the floor panel 3 by the cross member 8 via the seat bracket itself and the cross member 8, the seat bracket 4 is connected by the cross member 8. The upper surface portion 4a of the seat bracket can be reinforced, and the load from the rear seat 1 received by the upper surface portion 4a of the seat bracket can be received by the two members of the seat bracket 4 and the cross member 8 with respect to the floor panel 3, and the seat rail 2 It is possible to improve the load bearing strength of the upper surface portion 4a of the seat bracket 4 that supports the seat bracket 4.

Further, in the present embodiment, when the seat bracket 4 and the cross member 8 are installed on the floor panel 3, the left and right seat brackets 4 and 4 are connected by the cross member 8, and the upper surface portion 8d of the cross member 8 is substantially horizontal. Since the cross member is configured so as to be, the seat mounting-related performance can be tuned only by adjusting the strength of the cross member 8 without depending on the strength of the floor panel 3. That is, it is possible to tune the seat mounting related performance by adjusting the material, plate thickness, etc. of the cross member 8 for the seat mounting rigidity and vibration resistance performance, compared to the conventional structure that depends on the strength of the floor panel 3. It is also lightweight and cheap, and its performance can be improved.

Furthermore, in the present embodiment, since the side surface portion 4c of the seat bracket 4 located on the outer side in the vehicle width direction is arranged on the outer end portion 8c in the vehicle width direction of the cross member 8, the cross member 8 is placed on the seat bracket 4. It can be reinforced by the side surface portion 4c, and accordingly, the rigidity of not only the seat bracket 4 but also the cross member 8 can be improved.

Further, in the present embodiment, the front wall portion 4b of the seat bracket 4 is joined to the cross member 8, and the seat rail 2 is attached to the joint portion between the front wall portion and the cross member 8. it is possible to support the seat rails 2 by portion with increased stiffness and a cross member 8 fit two, it is possible to improve the sheet vibration rigidity.

8 and 9 state, and are not showing another embodiment of the seat attachment structure according to the present invention, the polymerization section 8h joined by overlapping a central portion 8a and the side portion 8b of the cross member 8, the vehicle The front end 2a of the seat rail 2 located on the center side is attached. In FIG. 9, 8i is a hole provided in advance in the polymerization portion 8h of the cross member 8 for inserting the positioning pin 9, and 13 is a nut for fastening and fixing the bolt 10 from the back side of the polymerization portion 8h. is there.

The seat rail 2 can be reliably supported by the overlapping portion 8h, which is a portion where the two members of the central portion 8a and the side portion 8b of the cross member 8 are overlapped to increase the rigidity, and the seat vibration rigidity can be improved. it can.

In both embodiments described above the present invention is applied to the mounting structure of the rear seat, the present invention is not limited to this, for example, be applied to a mounting structure of the front sheet has good.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and modifications can be made based on the technical idea of the present invention.

1 Rear seat 2 Seat rail 2a Front end 3 Floor panel 4 Seat bracket 4a Top surface 4b Front wall 4c Side surface 4d Flange 4e, 4f Hole 5 Front panel 6 Rear panel 7 Stepped part 8 Cross member 8a Central part 8b, 8b Side Part 8c Outer end in vehicle width direction 8d Top surface 8e Lower end 8f Front wall 8g, 8i Hole 8h Overlapping part 9 Positioning pin 10 Bolt 11 Washer 12, 13 Nut

Claims (4)

It is a seat mounting structure arranged in a floor area including a step portion formed on the center side in the vehicle width direction at the rear part of the passenger compartment floor and a step upper surface extending rearward from the upper end of the step portion.
A cross member extending in the vehicle width direction to the front side of the step portion and forming a closed cross section with the floor panel constituting the step portion,
A first mounting portion for supporting and fixing the front end portion of the seat on the vehicle width direction at the center portion of the cross member in the vehicle width direction, and
A seat bracket having a second attachment portion for said joined at the vehicle width direction outer side of the step portion in the floor panel, for supporting and fixing the vehicle width direction Kosoto side front end of the sheet,
In those that have
The cross member extends from the central side portion in the vehicle width direction forming the closed cross section to the outside in the vehicle width direction of the step portion, and is overlapped with the front wall portion and the upper surface portion of the seat bracket. A seat mounting structure characterized in that the seat bracket is connected to the stepped portion by the cross member. The cross member is composed of three members, a central portion including the first mounting portion and lateral portions on both sides in the vehicle width direction thereof, and the lateral portions are formed on a front wall portion and an upper surface portion of the central portion. It has a front wall portion and an upper surface portion to be joined in layers, the first mounting portion is provided at the joint portion, and the first mounting portion and the second mounting portion are connected by the side portion. The seat mounting structure according to claim 1, wherein the seat mounting structure is provided. The seat bracket has a side surface portion adjacent to the front wall portion and the upper surface portion on the outer side in the vehicle width direction, and at the lower end of the side surface portion and the lower end of the front wall portion, on the outer side of the step portion in the vehicle width direction. The seat mounting structure according to claim 1 or 2, wherein the seat mounting structure has a flange portion joined to the floor panel. The seat bracket, the upper surface portion, according to claim 1, characterized in that it comprises a positioning hole for inserting the positioning pin projecting from the vehicle width direction Kosoto side front end of the sheet Seat mounting structure.