JP2001301504A - Vehicular seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fully secure the thickness of a seat cushion and improve the strength of a frame body. SOLUTION: Each seat part 11, 12 obtained by dividing a sofa seat 1 in two can be reversed in front centering a line of which the seat cushion S1 connects its front end both side parts and can lean a seat back S2 forward in a space formed by reversing the seat cushion S1. The frame body 2 formed approximately in a rectangle in a plan view with lining with outer peripheries of the seat cushion S1 of each seat part 11, 12 is mounted to have its back side frame 26 arranged in a position apart from a position to contact a base of the seat cushion S1 for being loaded by the seat cushion S1. A longitudinal frame 27 is mounted on an interface of each seat part 11, 12 to form a flange part to contact an inside edge lower face of the seat cushion S1 of each seat part 11, 12 for being loaded by the seat cushion S1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat and, more particularly, to a seat cushion which is turned upside down from the back of the seat back which has been turned upside down in a space created by inverting the seat cushion forward. The present invention relates to an improvement in the structure of a so-called double flat type vehicle seat capable of forming a flat surface that continues to a side.

[0002]

2. Description of the Related Art Japanese Patent Application Laid-Open No. Hei 10-226253 discloses that
As shown in FIG. 9, the lower surface of the front end of the seat cushion S1 is connected to the upper rail 42 by a hinge 41, and the seat cushion S1 is erected forward about the hinge shaft 43 as indicated by an arrow, and this occurs. A vehicle seat is disclosed in which a seat back S2 is moved forward into a space so that a luggage compartment floor F can be enlarged. In this vehicle seat, cross frames 44 and 45 are respectively bridged on the front end and the rear end of the left and right upper rails 42 (only one is shown).
4 and 45 are provided at positions in contact with the bottom surface of the seat cushion S1 in the use state (the state of FIG. 9) before standing and rotating to support the load of the seat cushion S1.

[0003]

However, in the above-mentioned conventional structure, if a sufficient seat cushion thickness is to be ensured at a predetermined seating surface height, the space between the cross frame 4 and the cross frame 4 is not sufficient.
Since it is not possible to secure a sufficiently large cross section between the front and rear cross-sections 4 and 45, there is a problem that the strength of the substantially rectangular frame body 4 composed of the front and rear cross frames 44 and 45 and the left and right upper rails 42 is not sufficient.

Accordingly, the present invention solves such a problem, and provides a vehicle seat capable of ensuring a sufficient thickness of a seat cushion and improving the strength of a frame body. The purpose is to:

[0005]

In order to achieve the above object, according to the first aspect of the present invention, two seat cushions (S1) are provided on one frame body (2) provided on a vehicle floor in a right and left direction. With the seat cushion (S
In a vehicle seat in which the front ends of 1) are pivotally supported on the frame body (2), and the seat cushion (S1) can be flipped up and rotated about the front end thereof, the frame body (2) is mounted on the front frame. (25) An outer frame that is substantially rectangular in plan view and includes a rear frame (26) and left and right side frames (21, 22), and a front frame (25) and a rear frame ( 26) and a vertical frame (27) for coupling the rear frame (26) to the rear of the seat cushion (S1).
The left and right side edges of the seat cushion (S1) are
22) and a vertical frame (27).

In the first aspect of the present invention, the rear frame is moved from a position where the rear frame is in contact with the conventional seat cushion and receives the load to a rear position of the seat cushion, and the load of the seat cushion is reduced. Since the side frame and the vertical frame provided in the outer frame receive it, the cross-section of the rear frame can be made sufficiently large, and sufficient strength of the frame body can be ensured and the thickness of the seat cushion can be increased. Can be sufficiently secured.

In the second aspect of the present invention, the vertical frame (27) is provided with a main body (27) disposed between the two seat cushions (S1).
3) and a receiving portion (27) protruding laterally from the main body portion (273) and on which a side edge of the seat cushion (S1) is placed.
1,272).

In the second aspect of the present invention, since the main body of the vertical frame is disposed between the two seat cushions, the cross-sectional area of the main body is increased so as not to affect the thickness of the seat cushion. Sufficient strength can be ensured.

In the third invention, one shaft member (38) is provided on the bracket (33) provided at the front end of the vertical frame (27), and each seat cushion (S1) is provided at both ends of the shaft member (38). ) Are rotatably connected to the inner front end.

[0010] In the third aspect of the present invention, since each seat cushion is pivoted about a common single shaft member, it is possible to ensure good mounting accuracy of the two in the flip-up state.

Note that the reference numerals in parentheses indicate the correspondence with specific means described in the embodiments described later.

[0012]

FIG. 1 shows the frame structure of a chaise lounge seat 1. FIG. The couch seat 1 is divided in the longitudinal direction (the left-right direction in FIG. 1) at a ratio of about 6: 4, and the left and right seat portions 1 are divided.
The seat portions 11 and 12 respectively include seat cushion panels 13 and 14 for placing the seat cushion S1 and seat back panels 15 and 16 for holding the seat back S2. Is provided. The seat back panels 15 and 16 have reclining mechanisms 17, 18, 19 and 20 on both sides at the lower ends thereof.
Thereby, it can be moved forward by being connected to a frame body 2 described later.

FIG. 2 shows details of the frame 2. The frame body 2 is a seat cushion S1 of each of the seat portions 11 and 12.
The outer periphery of (FIG. 1) is formed in a substantially rectangular shape in a plan view, and left and right side frames 21 and 22 are constituted by upper rails of slide rails. Each upper rail 2
1, 22 are lower rails 23 disposed on the vehicle floor,
A lower arm 17 constituting reclining mechanisms 17 and 20 is provided at the rear end of each of the upper rails 21 and 22.
1,201 are fixed. Each lower arm 171,
The upper arm 172 is connected to the upper arm 172 and 202 so as to be rotatable and lockable at a predetermined position.
02, the outer lower ends of the seat back panels 15, 16 (FIG. 1) are fixed. In addition, each upper rail 21,
Brackets 31 and 32 project from the front end of the bracket 22.

The front frame 25 and the rear frame 26 of the frame body 2 are each made of a pipe material, and the front frame 25 is provided between the front ends of the left and right upper rails 21 and 22 to connect them. As shown in FIG. 1, the rear frame 26 is provided at a position behind the rear edges of the seat cushion panels 13 and 14 and not receiving the load of the seat cushion S1, and the rear ends of the left and right upper rails 21 and 22 are provided. It is erected between brackets 211 and 221 provided in the section, and these are connected. As described above, since the rear frame 26 is provided at a position in contact with the conventional seat cushion S1 and away from the position where the load is received, a large-diameter pipe material having sufficient strength is used. Therefore, the strength of the frame body can be sufficiently ensured.

The frame body 2 is provided with a vertical frame 27. The vertical frame 27 extends along the boundary of the seat cushion S1 (FIG. 1) of the left and right seat portions 11, 12, and includes a front frame 25 and a rear frame 26. Are combined. FIG. 4 shows a side view of the vertical frame 27, and FIGS. 5 and 6 show the cross-sectional shapes thereof. The vertical frame 27 has a substantially inverted U-shaped cross section (FIG. 5) in which the front half (the left half in FIG. 4) of the main body 273 opens downward, and both lower ends thereof are bent horizontally to serve as receiving portions. Receiving flange part 2
71 and 272. The height of the main body portion 273 of the vertical frame 27 gradually increases from the front end toward the rear, and a reinforcing plate 28 having a shallow substantially U-shaped cross section is provided at its rear half portion with the opening edge flange portion 281 as shown in FIG. At 282, it is joined to the receiving flange portions 271 and 272 from below to form a closed sectional structure.

Lower arms 181 and 191 constituting reclining mechanisms 18 and 19 are fixed to the rear end left and right positions of the vertical frame 27 (FIG. 2), and the reclining mechanisms 18 and 191 are respectively attached to the lower arms 181 and 191. 1
9, upper arms 182, 192 are rotatably and lockably connected at predetermined positions, and the lower inner ends of the seat back panels 15, 16 are fixed to the upper arms 182, 192 (FIG. 1). Even when a large load is applied to the vertical frame 27 from the seat back panels 15 and 16 via the reclining mechanisms 18 and 19 during rapid acceleration and deceleration of the vehicle, the rear half of the main body 273 of the vertical frame 27 is closed as described above. In addition to the structure, the second half has a cross-sectional shape that extends in the vertical direction as compared with the first half (see FIGS. 5 and 6), and thus exhibits sufficient durability against the load.

A bracket 33 is provided upright at the front end of the vertical frame 27 (FIG. 3). The bracket 33 has a substantially U-shape in plan view, and is provided with a single shaft member 38 extending horizontally through the opposing side walls. Plate-shaped brackets 34, 35, 36, and 37 having mounting holes on both sides of the front end are provided upright on each of the seat cushion panels 13 and 14, and mounting holes for the brackets 35 and 36 provided on the inside of the front end are provided. 351 and 361 are rotatably fitted to both ends of the shaft member 38 (FIG. 7). Further, a weld nut 342 (only one is shown) is attached to a mounting hole 371 (only one is shown) of each of the brackets 34, 37 (FIG. 3) provided on the outside of the front end of each of the seat cushion panels 13, 14. Bracket 3 provided at the front end of upper rail 22
Bolts 39 inserted from outside into the mounting holes 311, 321 are screwed into the weld nut 342.

Thus, each of the seat cushion panels 13 and 14 on which the seat cushion S1 is placed is attached to the shaft member 38.
And a bolt 39 can be turned forward and backward around a line connecting the bolt and the bolt 39. At this time, the left and right seat cushion panels 1
Since the members 3 and 14 are inverted around the common shaft member 38, the accuracy of the two members in the inverted state is secured. In this case, the overall strength of the bracket 33 is improved by arranging the shaft member 38 between both side walls of the U-shaped bracket 33 in plan view.

In the space created by inverting the seat cushion S1, the seat back S2 is tilted forward by the reclining mechanisms 17 to 20, and continues from the back of the seat back S2 to the bottom of the inverted seat cushion S1. A flat surface is formed, and luggage and the like can be loaded on the flat surface.

Here, in the use state before reversing, as shown in FIG. 8, the outer edges (only one is shown) of each of the seat cushion panels 13 and 14 are located on the upper rail 22 to support the load. On the other hand, the inner edges of the seat cushion panels 13 and 14 are located on receiving flange portions 281 and 282 formed on the vertical frame 27 to support the load. Thus, the load of the seat cushion panels 13 and 14 (that is, the seat cushion S1) is reliably supported by the upper rail 22 extending in the front-rear direction and the flange portions 271 and 272 of the vertical frame 27. As described above, since the load of the seat cushion S1 is supported by the upper rail 22 and the flange portions 271 and 272 of the vertical frame 27, the thickness of the seat cushion S1 can be sufficiently secured at a predetermined seating surface height. .

The inner edges of the seat cushion panels 13 and 14 are supported by the receiving flanges 271 and 272 protruding from the main body 273 of the vertical frame 27, so that the main body 273 is as described above. Regardless of this, the seat cushion panel 1
3, 14 can be held at a predetermined height. As described above, the main body 273 of the vertical frame 27 is
Since the main body portion 273 is arranged between the two, the cross-sectional area of the main body portion 273 is increased, so that the strength of the frame body 2 can be sufficiently secured without affecting the thickness of the seat cushion S1.

[0022]

As described above, according to the vehicle seat of the present invention, the thickness of the seat cushion can be sufficiently ensured and the strength of the frame body can be improved.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing a frame structure of a vehicle seat according to an embodiment of the present invention.

FIG. 2 is a perspective view of a main part of a frame structure of a vehicle seat.

FIG. 3 is an exploded perspective view of a main part of a frame structure of a vehicle seat.

FIG. 4 is a side view of a vertical frame.

FIG. 5 is a sectional view taken along the line VV of FIG. 4;

FIG. 6 is a sectional view taken along the line VI-VI of FIG. 4;

FIG. 7 is a perspective view of a front end of a vertical frame.

FIG. 8 is a vertical sectional view of a seat cushion portion.

FIG. 9 is an overall side view of a conventional vehicle seat.

[Explanation of symbols]

1 ... chaise lounge seat, 11, 12 ... seat part, 13, 14
... Seat cushion panel, 2 ... Frame body, 21
2 Upper rail, 25 Front frame, 26 Rear frame, 27 Vertical frame, 271, 272 Receiving flange, 33
Bracket, 38: Shaft, S1: Seat cushion, S
2 ... Seat back.

Continued on the front page (72) Inventor Nobuaki Saito 395-1, Kaminobu, Kokubu-shi, Kagoshima F-term in Toyota Auto Body Research Laboratories Co., Ltd. 3B087 BD08 CB14

Claims (3)

[Claims] 1. Two seat cushions are disposed on a single frame body provided on a vehicle floor in the vicinity of right and left, and front ends of the seat cushions are respectively supported by the frame bodies. In a vehicle seat that can be flipped up and rotatable around a front end, the frame body includes a substantially rectangular outer frame including a front frame, a rear frame, and left and right side frames in a plan view, and the front and rear of the frame. A vertical frame extending in the direction and joining the front frame and the rear frame,
A vehicle seat, wherein the rear frame is disposed behind the seat cushion, and left and right side edges of the seat cushion are supported by the side frame and the vertical frame. 2. The vehicle according to claim 1, wherein the vertical frame includes a main body disposed between the two seat cushions, and a receiving portion protruding laterally from the main body and on which a side edge of the seat cushion is placed. 2. The vehicle seat according to 1. 3. A bracket provided at a front end of the vertical frame, wherein one shaft member is provided, and front end inner portions of the respective seat cushions are rotatably connected to both ends of the shaft member. A vehicle seat according to claim 1.