JP4405852B2 - Seat support structure - Google Patents

Description

  The present invention relates to a seat support structure, and more particularly to a seat support structure that can be arbitrarily switched between a slide state in which a seat portion of a seat is moved forward and a tumble state in which the seat portion is erected forward.

  Conventionally, as a seat structure in which the seat portion can be moved, as shown in FIG. 6A, the seat portion 22 of the rear seat 21 is installed in a standard position, as shown in FIG. 6B. 22 is a tumble state in which the vehicle is stood forward, and as shown in FIG. 6 (c), the backrest portion 23 is tilted forward so that the cargo space 24 behind the rear seat 21 can be expanded forward. In this case, the seat portion 22 is configured such that the lower surface of the front end portion thereof is rotatably supported by the pivot portion 25 and the lower end of the backrest portion 23 is rotatably supported around the support shaft 26. Yes.

  In addition, as a support structure that can switch the seat portion between a tilted state in which the front portion is lifted upward from the standard position and a tumble state in which the rear portion of the seat portion is lifted upward and stood forward, one end of the rotating lever is There is known one that is rotatably supported on the floor at a position below the front end of the seat, and that the other end of the pivot lever is pivotally connected to the front-rear intermediate portion of the lower surface of the seat (for example, a patent) Reference 1).

In addition, the auxiliary sheet stored in the storage box is configured to be rotated by about 180 ° around the pivot portion disposed on the opening side of the storage box, and the auxiliary sheet is interlocked with the extraction operation. A structure is also known in which a support leg that has been stored in an overlaid state is automatically erected so that it can be supported by a link mechanism (see, for example, Patent Document 2).
JP 2003-34166 A JP 2002-225604 A

  However, the structure disclosed in FIG. 6 and Patent Document 1 only shows a mechanism for moving the seat portion to the tumble state, and the structure disclosed in Patent Document 2 is also the auxiliary seat. Only a mechanism for raising the support leg in conjunction with the removal is shown. Therefore, in response to a request to be able to selectively switch between a sliding state in which the seat is moved forward from the standard position and supported by the support legs, and a tumble state in which the seat is erected forward. There is a problem that the mechanism cannot respond.

  In view of the above-described conventional problems, an object of the present invention is to provide a seat support structure that can be selectively switched between a slide state and a tumble state with a single simple mechanism.

Seat support structure of the present invention, there is provided a seat support structure capable of switching arbitrarily sliding state and the seat which is supported by the seat portion of the seat from the standard position is moved forward and tumble upright forward, lower A floor, a seat provided on an upper floor having a step, a seat back provided independently of the seat, a turning lever whose one end is rotatably supported on the upper floor, and a seat And a support leg pivotally supported on the base end of the base, and with the seat installed in the standard position, the rotary lever extends rearward along the bottom of the seat, supporting leg is extended forward along the lower surface of the seat portion, and rotatably connected to a position spaced forwardly other end of the rotating lever in this state from the base end of the support leg, seat With the lever installed in the sliding state, the rotating lever extends from the support part toward the front of the seat part. The lower end of the support leg abuts on the lower floor is supported at the lower floor front of the seat via a support leg, and forming a seating area in the step upper surface of the seat upper surface and the upper floor .

  According to this configuration, the support leg is raised in a state where the seat is moved forward by moving the pivot lever forward while moving the pivot lever forward while maintaining the seat in a substantially horizontal posture. The seat can be moved forward and supported, and the seat can be erected with the support leg and the pivoting lever along the lower surface of the seat. The seat can be brought into a tumble state by moving the seat together with the support leg forward and downward while rotating the pivot lever in this posture. Therefore, it is possible to selectively switch between a sliding state in which the seat is moved forward and supported and a tumble state in which the seat is erected forward simply by providing a single simple mechanism consisting of a pivot lever and a support leg. Can do.

  In addition, when an elastic member that rotates and urges the support leg toward the state along the lower surface of the seat portion can be provided, it is possible to suppress the movement of the support leg unnecessarily when entering the tumble state, Further, when returning from the sliding state, the support legs are biased to the retracted posture along the seat portion, so that the usability is improved.

  According to the present invention, it is possible to select a sliding state in which the seat portion is moved forward and supported and a tumble state in which the seat portion is erected forward simply by providing a single simple mechanism including a pivot lever and a supporting leg. The sheet can be switched in various ways, and various usage forms of the sheet can be realized with a configuration that is advantageous in terms of mechanism and cost.

  Hereinafter, an embodiment of the seat support structure of the present invention will be described in detail with reference to FIGS.

  1 and 2, reference numeral 1 denotes a seat, which is composed of a seat portion 2 that is supported so as to be movable forward, and a backrest portion 3 whose lower end is pivotally supported so as to be able to fall forward. Arranged on the upper floor 5 of the vehicle having the upper floor 5. The seat portion 2 has a seat portion frame 6 in the vicinity of the lower surface thereof, and a pair of brackets 7 are provided on both sides thereof so as to protrude downward. A support shaft 8 is installed between the brackets 7 and 7. A pair of swing brackets 9 are rotatably fitted to the support shaft 8, and both ends of the pipe material 10 bent into a substantially U shape are fixed to the swing brackets 9 and 9 by welding and supported. A leg 11 is configured. Thus, the base end 11 a of the support leg 11 is pivotally supported on the lower surface of the seat portion 2.

  A pair of pivot brackets 12 are fastened and fixed to the upper part of the front end surface 5 a of the upper floor 5 with a space narrower than the width dimension of the support legs 11. One end of a rotation lever 14 is pivotally supported by a pivotal support 13 at the upper end of the pivotal support bracket 12. Further, the support leg 11 is provided with a connecting bracket 15 projecting downward at a suitable distance from the base end 11a, and the other end on the free end side of the rotating lever 14 is rotated by the connecting bracket 15. It is supported freely. Specifically, the turning lever 14 is formed by bending a metal bar into a substantially U shape, and an intermediate folded portion formed in a straight line is rotatably supported by the pivotal support portion 13. The end portion is bent outward in an L shape, and the bent shaft portion is rotatably supported by the connecting bracket 15.

  Further, as shown in FIG. 1B, both ends of an elastic member 16 such as a torsion coil spring that is externally fitted around the support shaft 8 are attached to a bracket 7 and a swing bracket 9 that are suspended from the seat frame 6. Each is engaged, and is configured to urge the support leg 11 toward a posture along the lower surface of the seat portion 2. The elastic member 16 is not limited to the torsion coil spring. For example, a tension coil spring may be interposed between the intermediate portion of the support leg 11 and the lower surface of the seat portion 2.

As shown in FIG. 1A, the lower floor 4 is provided with an engagement holding portion 17 that receives and engages and holds the lower end of the support leg 11, and the rear lower surface of the seat portion 2 and the upper floor 5. The engaging member 18a and the engaging member 18b that are engaged with each other to prevent the seat 2 from being lifted up are provided in a sliding state in which the seat 2 is moved forward.

  According to the configuration of the present embodiment described above, the slide state in which the seat portion 2 is moved forward as shown in FIG. 3 just by moving the seat portion 2 from the standard position shown in FIG. Thus, it can be selectively switched to any of the tumble states in which the seat portion 2 stands forward.

  When the seat portion 2 is set in the sliding state, as shown in FIG. 3A, the seat lever 2 is maintained in a substantially horizontal posture from the standard position, and the turning lever 14 is turned forward while being turned forward. Move. Then, the support leg 11 stands up against the urging force of the elastic member 16 as the seat portion 2 moves forward, and the seat portion 2 moves forward as shown in FIG. The lower end of the support leg 11 comes into contact with the lower floor 4 and the front part of the seat 2 is supported by the lower floor 4 via the support leg 11.

  In this sliding state, the seat portion 2 can be stably supported by engaging and holding the lower end of the support leg 11 with the engagement holding portion 17 provided on the lower floor 4. Further, by engaging the engaged member 18a at the rear portion of the seat portion 2 with the engaging portion 18b provided on the upper floor 5, even if the support leg 11 is returned and urged by the elastic member 16, the reaction is reversed. It is possible to prevent the rear portion of the seat portion 2 from being lifted by force. Further, when the seat portion 2 is returned from the sliding state to the standard position, the support leg 11 is urged by the elastic member 16, so that the support leg 11 automatically and smoothly follows the seat portion 2. Since it returns to the retracted position, operability is good.

  When the seat portion 2 is in a tumble state, as shown in FIG. 4A, the seat portion 2 is erected with the support leg 11 and the rotation lever 14 along the lower surface of the seat portion 2. The seat 2 can be tumbled. In addition, when there is a space in the front, the rotation lever 14 is further rotated while the seat 2 is kept in the standing posture, and the seat 2 is moved together with the support legs 11 to the lower front. A tumble state as shown in FIG. When the tumble state is set, the elastic member 16 that urges the support leg 11 toward the state along the lower surface of the seat portion 2 is provided. It can be suppressed and operability is good.

  Thus, according to the seat support structure of this embodiment, as shown in FIGS. 1 (a) and 5 (a), only by providing a single simple mechanism comprising the pivot lever 14 and the support leg 11, As shown in FIG. 3 (b) and FIG. 5 (b), the seat portion 2 and the upper stage as a slide state in which the seat portion 2 is moved forward and supported, as shown in FIGS. As shown in FIG. 5 (c), a use form in which a wide seat space is formed on the floor 5, and a vast space that is continuous with the luggage floor 19 at the rear of the seat 1 by lowering the backrest 3 forward. As shown in FIG. 4 (b), the usage pattern formed is a tumble state where the seat portion 2 stands forward, and a wide concave space is formed by the backrest portion 3, the upper floor 5, and the lower surface of the seat portion 2. Further, as shown in FIG. 5 (d), the backrest 3 is laid down. Te to the lower surface position of the seat 2 such use forms form a vast space continuous with the luggage compartment floor 19 may be deployed in various use forms.

  The seat support structure of the present invention can be selectively switched between a sliding state in which the seat portion is moved forward and supported and a tumble state in which the seat portion is raised in the forward direction, which is advantageous in terms of mechanism and cost. Since the configuration can realize various usage forms of the seat, it is useful for seats of various automobiles.

1 shows an embodiment of a sheet support structure of the present invention, (a) is a side view showing a schematic configuration, (b) is an enlarged detail view of part A of (a). It is a perspective view which shows the frame structure of the seat part and support structure of the embodiment. It is operation | movement explanatory drawing at the time of making the seat part of the embodiment into a slide state. It is operation | movement explanatory drawing at the time of making the seat part of the embodiment into a tumble state. It is explanatory drawing of the various usage forms in the sheet | seat of the embodiment. It is explanatory drawing of the various usage forms in the sheet | seat of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Seat 2 Seat part 5 Upper floor 11 Support leg 11a Base end 13 Pivoting part 14 Rotating lever 16 Elastic member

Claims (2)

A seat support structure capable of arbitrarily switching between a sliding state in which the seat portion of the seat is moved forward from a standard position and a tumble state in which the seat portion is erected forward,
The lower floor,
A seat provided on the upper floor having a step,
A seat back provided independently of the seat,
A rotation lever whose one end is rotatably supported on the upper floor;
A support leg having a base end pivotably supported on the lower surface of the seat,
With the seat installed at the standard position, the pivot lever extends rearward along the lower surface of the seat,
The support leg extends forward along the lower surface of the seat,
And in that state, the other end of the pivot lever is pivotally connected to a position away from the base end of the support leg ,
In a state where the seat portion is installed in a sliding state, the rotation lever extends from the support portion toward the front of the seat portion,
Lower end of the support leg abuts on the lower floor is supported at the lower floor front of the seat via a support leg, and wherein the forming child seats space between the stepped upper surface of the seat upper surface and the upper floor Sheet support structure. The seat support structure according to claim 1, further comprising an elastic member that urges the support leg to rotate along a lower surface of the seat portion.

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