JP2019156116A - Vehicular seat - Google Patents

Abstract

To provide a vehicular seat to which a seat cushion and a seat back are supported through flexible front leg part and rear leg part, which can smoothly select a seating possible state and a storage state.SOLUTION: A vehicular seat is configured so that, in a seating possible state, through a forward inclination state in which, a second release lever 51 of a second fixing part 50 is released and a seat back 30 is laminated to a seat cushion 20, a first fixing part 40 is released and a front leg part 42 and a rear leg part 41 are forward bent, for making the vehicular seat in a storage state. In the storage state, even when the seat back 30 and the rear leg part 41 are arranged on a same line, the second fixing part 50 is not locked, so that, even when the front leg part 42 and rear leg part 41 is extended rearward for returning the vehicular seat from the storage state to the seating possible state, a lamination state of the seat back 30 to the seat cushion 20 can be maintained. Therefore, when a user returns the vehicular seat from the storage state to the seating possible state, a tip of the seat back 30 does not interfere an interior for achieving a smooth operation.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle seat.

  2. Description of the Related Art Conventionally, a vehicle seat (vehicle seat) mounted on a vehicle such as an automobile is known in which a seat cushion and a seat back are supported on a vehicle installation surface via a lower frame (for example, Patent Document 1). reference).

  The vehicle seat described in Patent Literature 1 includes a seat cushion on which an occupant sits and a seat back that supports the back of the occupant. When such a vehicle seat is stored in the storage position, the seat back is first bent forward with respect to the seat cushion, and then the leg is lowered forward and the seat cushion is lowered and moved forward. Therefore, it can be easily stored in the storage position.

Japanese Patent No. 5784120

  By the way, when the vehicle seat of Patent Document 1 is moved from the seating position to the accommodation position, the order described above, that is, the order in which the seat back is first bent forward with respect to the seat cushion and then the leg portion is tilted forward. If it is not operated in the street, the front end of the seat back may interfere with the interior of the vehicle and may not be changed to the storage position.

Further, when the vehicle seat is returned from the storage position to the seating position, the front end of the seat back may interfere with the interior of the vehicle unless the vehicle seat is operated in the reverse order.
Specifically, if the seat back is first lifted away from the seat cushion before the legs are stood rearward in the storage position of the vehicle seat, the front end of the seat back is the interior of the vehicle. May interfere.
Such an event becomes remarkable in the dive down seat of the front seat.

  The present invention has been made in view of the above-described circumstances, and in a vehicle seat in which a seat cushion and a seat back are supported via a leg portion that can be tilted forward, a vehicle that can smoothly select a seatable state and a storage state. The purpose is to provide a seat for the use.

  A vehicle seat according to an aspect of the present invention includes a front leg portion and a rear leg portion provided on an installation surface of the vehicle, and a seat cushion and a seat back supported by the front leg portion and the rear leg portion, When the front leg portion and the rear leg portion stand at a predetermined angle with respect to the installation surface, the relative angle between the installation surface and the rear leg portion is fixed by the first fixing portion, and the seat back is A seatable state in which a relative angle between the seat back and the rear leg portion is fixed by a second fixing portion when arranged along the extending direction of the rear leg portion, and the second fixing portion from the seatable state Is released, the front-rear state where the seat back is disposed at the position laminated with respect to the seat cushion, and the first leg is released from the front-rear state, the front leg portion and The rear leg The seat cushion in which the seat back is tilted forward and laminated is disposed at a position close to the installation surface, and the seat back is disposed along the extending direction of the rear leg portion. Selection is possible, and the release of the second fixing portion is maintained in the storage state.

  ADVANTAGE OF THE INVENTION According to this invention, in the vehicle seat by which the seat cushion and the seat back were supported via the rear leg part which can lean forward, a seatable state and a storage state can be selected smoothly.

1 is a side view of a vehicle seat in a seatable state, showing an example of a vehicle seat for explaining an embodiment of the present invention. 1 is a side view of a vehicle seat in an accommodation state showing an example of a vehicle seat for explaining an embodiment of the present invention. It is an expansion perspective view which shows the detail of the 2nd fixing | fixed part in a seatable state. (A1) is a side view of a vehicle seat in a seatable state, (A2) is a detailed view of a second fixing portion in the state of (A1), (B1) is a side view of a vehicle seat in a forward-turned state, (B2 ) Is a detailed view of the second fixing portion in the state of (B1), (C1) is a side view of the vehicle seat on the way from the forward-turned state to the stored state, and (C2) is the second fixing portion in the state of (C1). (D1) is a side view of the vehicle seat in the stowed state, and (D2) is a detailed view of the second fixing portion in the (D1) state. It is explanatory drawing which shows a movement of the seat back at the time of shifting to a stowed state from a front-down state. It is a side view which shows the problem which may arise when changing from a stowed state to a seatable state by a different operation procedure.

FIG. 1 shows an example of a vehicle seat for explaining an embodiment of the present invention, and is a side view of the vehicle seat in a seatable state, and FIG. 2 is a side view of the vehicle seat in a stored state. . FIG. 3 is an enlarged perspective view showing details of the second fixing portion in a seatable state of the vehicle seat.
In the following description, the front side of the vehicle is displayed as “front”, the rear side of the vehicle as “rear”, the upper side of the vehicle as “up”, and the lower side of the vehicle as “lower”.

  As shown in FIGS. 1 and 2, a vehicle seat 10 (hereinafter referred to as a seat 10) is mounted on a vehicle such as an automobile, and a seat cushion 20 on which an occupant can mainly sit, and a seat cushion 20 is seated. And a seat back 30 that supports the back of the passenger. The seat cushion 20 and the seat back 30 are attached to the floor (mounting surface) F via the front leg portion 42 and the rear leg portion 41. The seat 10 is a so-called dive-down seat in which the seat cushion 20 is lowered so as to approach the floor F in conjunction with the forward tilt of the seat back 30, and the back surface of the seat back 30 that has been tilted forward is used as a luggage loading surface. It is often used for commercial vehicles.

The seat cushion 20 includes a pair of left and right cushion side frames 21, 21 extending in the front-rear direction, and a bottom plate (not shown) that connects lower portions of the cushion side frames 21. A cushion material (not shown) is provided on the bottom plate between the pair of left and right cushion side frames 21, 21, and the cushion side frames 21, 21 and the outside of the cushion material are covered with a cushion cover 22.
1 and 2, the cushion side frame 21 is shown only on the left side in the vehicle traveling direction.

The rear end portion 23 of the cushion side frame 21 is exposed from the cushion cover 22 and is bent upward.
As shown in FIG. 3, a bolt hole is provided in the rear end portion 23 of the cushion side frame 21, and the cushion side frame 21 is rotatably attached to the rear leg portion 41 by a bolt 24. Further, a pin (guide means) 25 is provided on the inner side (front lower side) of the bolt 24 at the rear end portion 23 of the cushion side frame 21.

As shown in FIG. 3, the seat back 30 has a pair of left and right back side frames 31, 31 (only one shown on the front side is shown) extending in the vertical direction in a seatable state (the state shown in FIG. 1). A back plate (not shown) for connecting the rear end of the frame 31 is provided. A back cushion material (not shown) is provided on the front surface of the back plate between the pair of left and right back side frames 31, 31, and the back side frames 31, 31 and the outside of the back cushion material are covered with a back cover 32. . A headrest 33 used when a person gets on the upper end of the seat back 30 is detachably attached (see FIG. 1).
Note that the headrest 33 is removed when the seat back 30 is moved forward and the back surface is used as a luggage loading surface. Therefore, in the following description, the state where the headrest 33 is removed will be described.

As shown in FIG. 3, the lower end portion of the back side frame 31 is exposed from the back cover 32, and the rear leg portion is interposed via a second fixing portion 50 that fixes the seat back 30 in a state inclined at a desired angle. A back side frame 31 is attached to 41 via a rotation fulcrum 511 so as to be rotatable. That is, the second fixing portion 50 has a reclining function for fixing the seat back 30 in a state where the seat back 30 is inclined at a desired angle with respect to the seat cushion 20.
Here, by releasing the second release lever 51 of the second fixing portion 50, the seat back 30 can rotate around the rotation fulcrum 511 until it is stacked on the seat cushion 20.

As shown in FIGS. 1 and 2, the rear leg portion 41 is supported such that the lower end portion thereof is rotatable with respect to the floor F, and the upper end portion thereof is the rear end portion of the cushion side frame 21 and the back side frame 31. A lower end part is supported so that rotation is possible. Further, the front leg portion 42 is supported such that the lower end portion thereof is rotatable with respect to the floor F, and the upper end portion thereof rotatably supports the front end portion of the cushion side frame 21.
The rear leg part 41 and the front leg part 42 are provided substantially in parallel, and the rear leg part 41, the front leg part 42, the floor F, and the cushion side frame 21 of the seat cushion 20 constitute a substantially parallelogram link mechanism. . Therefore, when the rear leg portion 41 and the front leg portion 42 are rotated with respect to the floor F, the seat cushion 20 is movable in the front-rear direction and the vertical direction while maintaining a substantially parallel state with respect to the floor F. .

A first fixing portion 40 is provided at the lower portion of the rear leg portion 41, and the rear leg portion 41 is prevented from rotating backward from the seatable state (see FIG. 1) by the first fixing portion 40. It can be fixed in a seatable state. At this time, the seat back 30 is substantially on the extension of the rear leg portion 41 and can be fixed to the rear leg portion 41 by the rotation fulcrum 511 of the second fixing portion 50.
By releasing the first fixing portion 40, the rear leg portion 41 can be rotated forward, and the seat cushion 20 can move forward and downward while maintaining a substantially parallel state with respect to the floor F. It has become.
The fixed state of the first fixing unit 40 is released by the operation of the first release lever 43 provided on the rear leg portion 41.

As shown in FIG. 3, the second fixing portion 50 has a general reclining mechanism, and the second release lever 51 operated at the time of reclining rotates around the rotation fulcrum 511 in the clockwise direction in the drawing. It is provided to be movable. The second release lever 51 is always urged by the return spring 53 in the non-release direction (the direction of arrow A in FIG. 3 and the counterclockwise direction in the drawing). The second release lever 51 is provided with a turning piece 52 so as to be turnable via a turning piece shaft 521. The rotating piece 52 is a band plate-like member, and is provided with a long hole (guide means) 522 along the longitudinal direction. A pin 25 attached to the rear end portion 23 of the cushion side frame 21 passes through the elongated hole 522 so as to be slidable.
A resin slider 523 is attached to the outer surface of the rotating piece 52 to facilitate the sliding of the rotating piece 52.

Next, the storing operation of the sheet 10 will be described.
As shown in FIG. 1 and FIG. 4 (A1), in the seatable state where the occupant is seated on the seat 10, the rear leg portion 41 and the front leg portion 42 are substantially upright with respect to the floor F, and the first fixing portion 40 It is fixed by. At this time, the seat back 30 is fixed on a substantially extended line of the rear leg portion 41 by the second fixing portion 50.

  The seat cushion 20 is fixed substantially parallel to the floor F by the rear leg portion 41 and the front leg portion 42. As shown in FIG. 4 (A2), in this seatable state, the second release lever 51 is biased by the return spring 53 and is at the origin position, and the pin 25 of the cushion side frame 21 is the length of the rotating piece 52. It is located at the rear end of the hole 522.

  Next, the occupant operates the second release lever 51 to release the second fixing portion 50 and tilt the seat back 30 forward from the seatable state (see arrow A in FIG. 4A1). As shown in FIG. 4 (B1), only the seat back 30 is rotated forward and stacked on the seat cushion 20, and the front back is maintained in a state where the seat back 30 intersects the rear leg portion 41 at a substantially right angle. It becomes a state. In this forward-turned state, as shown in FIG. 4 (B2), the positional relationship between the second release lever 51, the pin 25, and the elongated hole 522 of the rotating piece 52 has hardly changed from the seatable state.

  Next, as shown in FIG. 4 (C1), the occupant operates the first release lever 43 provided on the rear leg portion 41 in the forward-turned state to release the first fixing portion 40, and the rear leg portion 41 Is tilted forward (see arrow C in FIG. 4C1). At this time, the seat cushion 20 and the seat back 30 in the stacked state are integrated into a substantially parallel state by the link mechanism configured by the rear leg portion 41, the front leg portion 42, the floor F, and the cushion side frame 21 of the seat cushion 20. Move forward and downward.

  Accordingly, as shown in FIG. 5, the seat back 30 and the seat cushion 20 can reach a position where the seat back 30 moves downward and moves forward without interfering with the interior S of the vehicle.

  By this operation, the rear leg portion 41 is largely rotated forward, so that the crossing angle of the seat cushion 20 that holds the parallel state with respect to the cushion side frame 21 changes. Thereby, as shown in FIG. 4 (C2), the position of the pin 25 of the cushion side frame 21 gradually becomes relatively along the elongated hole 522 provided in the rotating piece 52 of the second release lever 51. Move forward.

  As shown in FIGS. 2 and 4 (D1), when the seat cushion 20 and the seat back 30 are completely stored, the seat is the same as in the seatable state (see FIGS. 1 and 4 (A1)). The back 30 is located on a substantially extended line of the rear leg portion 41. For this reason, the second fixing portion 50 is normally locked and the seat back 30 is fixed on the extension line of the rear leg portion 41. However, in the seat 10, the second fixing portion 50 is in the stored state. 50 is maintained in a released state.

  That is, as shown in FIG. 4 (D2), when the storage state is reached, the pins 25 provided on the cushion side frame 21 gradually move along the elongated holes 522 of the rotating piece 52 of the second fixing portion 50. In the retracted state, the pin 25 is in contact with the front end of the elongated hole 522 and pulls the rotating piece 52 clockwise (in FIG. 4 (D2)). (See arrow D). For this reason, in the retracted state, the second release lever 51 is maintained in a released state, and the seat back 30 can be rotated by its own weight in the counterclockwise direction relative to the rear leg portion 41. It is in a state.

Next, an operation for shifting the seat 10 from the stored state to the seatable state will be described.
The transition from the stored state to the seatable state is performed by the reverse procedure of the transition from the seatable state to the stored state.

  As described above with reference to FIG. 4 (D1) and FIG. 4 (D2), the seat back 30 stacked on the seat cushion 20 is on the extension line of the rear leg portion 41 in the stored state. At this time, if the seat back 30 is fixed to the rear leg portion 41 by the second fixing portion 50 so as not to rotate, as shown in FIG. 6, when the seat back 30 is lifted and raised, the rear leg It tries to happen as a unit around the center of rotation of the portion 41. For this reason, since the rear surface of the front end of the seat back 30 interferes with the interior S, it is difficult to raise the seat back 30.

  In the seat 10, since the second fixing portion 50 maintains the unlocked state in the retracted state, the seat back 30 is relatively counterclockwise to the rear leg portion 41 as shown in FIG. The crossing angle can be changed by turning in the turning direction. For this reason, when returning from the stored state to the seatable state, the seat cushion 20 with the seat back 30 stacked thereon is lifted rearward and upward, without lifting only the seat back 30, so that FIG. As shown, the seat back 30 can be moved upward and backward while maintaining a parallel state integrally with the seat cushion 20.

  In this case, in order to maintain the state where the seat back 30 is stacked on the seat cushion 20, a connecting member 54 such as a strap for connecting the front end of the seat back 30 and the front end of the seat cushion 20 is provided. Since the seat back 30 moves in parallel with the seat cushion 20, the crossing angle with respect to the rear leg portion 41 can be changed more reliably, and the rear leg portion 41 can be easily raised.

  As shown in FIG. 4 (B1), when the rear leg portion 41 stands up to a predetermined angle with respect to the floor F, the rear leg portion 41 is rotationally fixed by the first fixing portion 40, and the seat back 30 is attached to the seat cushion 20. It will be in the advanced state of lamination. At this time, the front leg portion 42 also stands at a predetermined angle to support the front end portion of the seat cushion 20.

  Finally, when the seat back 30 is raised, as shown in FIG. 4 (A1), it is possible to return to the seatable state.

  Thereby, in this seat 10, it can change to a seatable state and a stowed state reliably and smoothly even in a narrow vehicle.

As mentioned above, although the sheet | seat 10 of this invention has been demonstrated based on specific embodiment, this invention is not limited to the specific embodiment mentioned above, The range which does not deviate from the technical idea of this invention. Needless to say, various modifications and improvements may be made.
For example, in the above-described embodiment, the case where the pin 25 is provided in the cushion side frame 21 as the guiding means and the elongated hole 522 is provided in the second release lever 51 of the second fixing portion 50 has been described. It is also possible to provide a long hole in the side frame 21 and a pin in the second release lever 51.

  As described above, the vehicle seat disclosed in the present specification includes a front leg portion and a rear leg portion provided on a vehicle installation surface, and a seat cushion and a seat back supported by the front leg portion and the rear leg portion. And the relative angle between the installation surface and the rear leg portion is fixed by the first fixing portion when the front leg portion and the rear leg portion stand at a predetermined angle with respect to the installation surface. And a seatable state in which a relative angle between the seat back and the rear leg portion is fixed by a second fixing portion when the seat back is disposed along the extending direction of the rear leg portion, and the seatable state When the second fixing portion is released from the state, the front fixing state in which the seat back is disposed at the position laminated with respect to the seat cushion, and the first fixing portion is released from the frontward falling state. By The seat cushion in which the front leg portion and the rear leg portion are tilted forward and the seat back is laminated is disposed at a position approaching the installation surface, and the seat back is in an extending direction of the rear leg portion. It is possible to select a storage state arranged along the line, and the release of the second fixing portion is maintained in the storage state.

  Further, the vehicle seat disclosed in the present specification includes guide means for guiding a release lever for releasing the second fixing portion in the release direction in the stored state.

  In the vehicle seat disclosed in the present specification, the guide means is provided on one of the seat cushion and the release lever, and a pin protruding toward the other, and the seat cushion And an elongated hole provided in the other of the release levers for guiding the pin.

10 seats (vehicle seats)
20 Seat cushion 25 pin (guide means)
30 seat back 41 rear leg part 42 front leg part 40 first fixing part 50 second fixing part 51 second release lever (release lever)
522 slot (guide means)
F floor (mounting surface)

Claims (3)

A front leg and a rear leg provided on the installation surface of the vehicle;
A seat cushion and a seat back supported by the front leg and the rear leg,
When the front leg portion and the rear leg portion stand at a predetermined angle with respect to the installation surface, the relative angle between the installation surface and the rear leg portion is fixed by the first fixing portion, and the seat back is A seatable state in which a relative angle between the seat back and the rear leg portion is fixed by a second fixing portion when arranged along the extending direction of the rear leg portion;
When the second fixing portion is released from the seatable state, the front-back state in which the seat back is disposed at a position laminated with respect to the seat cushion; and
When the first fixed portion is released from the forward-turned state, the front leg portion and the rear leg portion are tilted forward, and the seat cushion in which the seat back is stacked approaches the installation surface. And a stowed state in which the seat back is disposed along the extending direction of the rear leg, and can be selected.
A vehicle seat in which release of the second fixing portion is maintained in the stored state. The vehicle seat according to claim 1,
A vehicle seat having guide means for guiding a release lever for releasing the second fixing portion in the release direction in the storage state. The vehicle seat according to claim 2,
The guiding means includes
While being provided on one of the seat cushion and the release lever, a pin protruding toward the other,
A vehicle seat having an elongated hole provided on the other of the seat cushion and the release lever and guided by the pin.

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