JP2013035389A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To sufficiently secure a backward slide amount of a slide seat disposed at the front.SOLUTION: A vehicle seat 10 is shifted to a tip-up state from a seatable state by rotating a front end part 11F of a seat cushion 11 backward with respect to a base part 13. A first leg 14 for bearing a load applied to the base part 13 between it and a floor surface C2 is connected to the base part 13. A second leg 15 for bearing a load applied to the seat cushion 11 between it and the floor surface C2 is connected to the front end part 11F of the seat cushion 11. The second leg 15 is folded along a bottom surface 11E of the seat cushion 11. The first leg 14 is disposed behind the front end of the seat cushion 11 in the tip-up state.

Description

  The present invention relates to a vehicle seat. More specifically, the present invention relates to a vehicle seat having a tip-up function for rotating a front end portion of a seat cushion backward relative to a base portion.

  The rear seat of the vehicle was designed as a tip-up seat (a seat cushion with a seat cushion that can be rotated backward with respect to the base of the seat) for the purpose of improving the passengers' ability to get on and off the vehicle or expanding the vehicle floor space. There is a vehicle. Such a chip-up sheet is disclosed in Patent Document 1 below, for example.

JP 2009-067309 A

When the tip-up seat is tip-up operated, the front and rear lengths of the seat are shortened by the rearward rotation of the seat cushion, so that the slide seat disposed at the front can be slid relatively backward. However, since the tip-up seat does not move even when the seat cushion is tip-up operated, the slide seat that slides backward interferes with the base portion of the tip-up seat and can slide the slide seat backward. Space is limited. For this reason, there exists a problem which cannot fully ensure the back slide amount of a slide seat.
In view of such a problem, the present invention reduces the amount of forward protrusion of the base portion of the seat while ensuring the support strength of the tip-up seat to the vehicle floor, thereby enabling the rear slide of the slide seat arranged in the front. The problem is to ensure a sufficient amount.

In order to solve the above problems, the vehicle seat of the present invention takes the following means.
A first invention is a vehicle seat disposed behind a slide seat disposed in a vehicle. The vehicle seat is configured to shift from a seatable state to a tip-up state by rotating the front end portion of the seat cushion backward so as to jump up with respect to the base portion. A first leg that supports a load applied to the base portion is coupled to the base portion between a floor surface of the vehicle on which the slide seat slides. The front leg portion of the seat cushion is connected to a second leg that supports a load applied to the seat cushion with the floor surface. The second leg is configured to be folded along the bottom surface of the seat cushion. The first leg is disposed behind the front end of the seat cushion in the tip-up state.
According to the first aspect of the invention, the load applied to the vehicle seat is distributed and supported by the first leg and the second leg. For this reason, the intensity | strength required for a 1st leg becomes small and can make a 1st leg smaller. Thereby, the protrusion amount to the front of a base part and a 1st leg can be made smaller. Further, in the tip-up state, the first leg is disposed behind the front end of the seat cushion that is flipped up, and the second leg is stored so as to be folded along the bottom surface of the seat cushion. Thereby, in the tip-up state, the rearward sliding range of the slide seat can be greatly expanded so that the rear slide of the front slide seat is not hindered by each leg and the base portion 13.

Next, in a second aspect based on the first aspect, the bottom surface of the seat cushion is tilted backward in the tip-up state.
According to the second aspect, in the tip-up state in which the front end portion of the seat cushion is flipped up, the bottom surface of the seat cushion is tilted backward corresponding to the backward tilt of the seat back in the front slide seat. Thereby, the slidable range to the rear of the slide seat can be further expanded to the rear.

Furthermore, the third invention is the above first or second invention, wherein the front end portion of the seat cushion is provided with a cushion pad on the bottom surface side.
According to the third aspect of the invention, the seat cushion is provided with the cushion pad on the upper side and the front side in the tip-up state. Thus, when the front slide seat is slid rearward and the back surface of the seat back comes into contact with the upper and front portions of the seat cushion in the tip-up state, the contact is made by soft contact with the cushion pad. Can reduce the impact of time.

1 is a side view of an automobile to which an embodiment of a vehicle seat according to the present invention is applied. It is a perspective view showing the frame structure of the above-mentioned vehicular seat. FIG. 2 is a side view similar to FIG. 1, showing a state where the vehicle seat is chipped up. FIG. 2 is a side view similar to FIG. 1, showing a state where the vehicle seat is space-up. FIG. 4 is a partially enlarged view of FIG. 3.

EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated using drawing.
First, the configuration of a vehicle seat 10 according to an embodiment will be described with reference to FIGS. 1 to 5. The vehicle seat 10 is a vehicle seat employed in the third row in the three-row seat type automobile C. As shown in FIG. 2, the vehicle seat 10 has a base portion 13 connected to a wall surface C1 of the automobile C via a space-up mechanism 13A. Then, as shown in FIG. 4, the space-up mechanism 13A jumps and stores the seat cushion 11 and the seat back 12 (see FIG. 1) of the vehicle seat 10 sideways along the wall surface C1 (see FIG. 4). Hereinafter, this state is also referred to as “space-up state”). Thereby, the space for placing a load etc. behind the slide sheet C3 employed in the second row of the automobile C can be secured.
That is, as shown in FIG. 2, the vehicle seat 10 has its back frame 12A centered on a rotating shaft 12D with respect to the base portion 13 by the urging force of a spiral spring 12E provided adjacent to the reclining mechanism 12B. This state can be locked by being pushed down (see FIG. 4). Here, the locked state and the unlocked state of the reclining mechanism 12B can be switched by operating a lever (not shown) connected to the reclining mechanism 12B via a switching link 12C.
Then, the space-up mechanism 13A rotates the base portion 13 together with the seat cushion 11 and the seat back 12 in a state where the seat back 12 is turned down toward the seat cushion 11 (that is, the vehicle seat 10 is folded). It is rotated laterally around the moving shaft 13B. Thereby, the space-up mechanism 13A sets the vehicle seat 10 to the above-described space-up state.

As shown in FIGS. 1 and 2, the seat cushion 11 is provided so as to cover the cushion frame 11A from the seating surface side (upper side in FIG. 1). The cushion frame 11A is placed on the base portion 13 so as to protrude forward (leftward as viewed in FIG. 1) with respect to the base portion 13 described above in the seatable state. A tip-up mechanism 11B is provided between the cushion frame 11A and the base portion 13.
The tip-up mechanism 11B always rotates the front end portion 11F of the seat cushion 11 so as to flip up with respect to the base portion 13 around the rotation shaft 11C (that is, upward and rearward in FIG. 3). Energized. In the seatable state, this urging force is locked by a lock mechanism 11D (see FIG. 2) provided in the tip-up mechanism 11B. When the lock mechanism 11D is unlocked, as shown in FIG. 3, the seat cushion 11 is stored in a flipped state, and the longitudinal length of the vehicle seat 10 is shortened (hereinafter referred to as this state). Also called “chip-up state”.)
As a result, the slide seat C3 is made larger than the state before the seat cushion 11 and the seat back 12 of the vehicle seat 10 are stored (see FIG. 1; this state is also referred to as “seatable state” hereinafter). Can slide backwards.

As shown in FIGS. 1 to 4, the base portion 13 is connected to a first leg 14 that supports a load applied to the base portion 13 with the floor surface C <b> 2 of the automobile C. In addition, a second leg 15 that supports a load applied to the seat cushion 11 between the seat cushion 11 and the floor surface C <b> 2 of the automobile C is connected to a portion protruding forward of the seat cushion 11. Thereby, the load applied to the vehicle seat 10 is dispersed and supported, and the strength required for the base portion 13 and the first leg 14 is further reduced.
For this reason, the base part 13 and the 1st leg 14 can be made smaller, and the amount of protrusion to those front can be made smaller. Furthermore, the slidable range of the slide seat C3 secured by turning the second leg 15 on the front side together with the seat cushion 11 to the above-described tip-up state can be further expanded.

As shown in FIG. 2, the second leg 15 is formed in a long shape by bending a plate material, and one end in the longitudinal direction thereof is connected to the cushion frame 11A of the seat cushion 11 via a joint 15B. . The joint 15B rotates the second leg 15 laterally with respect to the seat cushion 11, and a first rotating shaft 15C that can be folded along the bottom surface 11E of the seat cushion 11; The leg 15 is rotated back and forth with respect to the seat cushion 11 and includes a second rotation shaft 15D that can be folded along the bottom surface 11E.
That is, the seat cushion 11 connects the second leg 15 so as to be rotatable in two different directions via a joint 15B having two rotation shafts 15C and 15D. For this reason, the second leg 15 can be folded and stored in either the above-described chip-up state (see FIG. 3) or space-up state (see FIG. 4). Thereby, the space which can be ensured by the chip-up state and the space-up state can be widened.

The joint 15B always urges the second leg 15 to turn sideways about the first rotation shaft 15C and rearward about the second rotation shaft 15D. Yes. Each urging force is individually locked by a lock member (not shown) in the seatable state.
In addition, as shown in FIG. 1, the seat cushion 11 is provided so as to cover the joint 15B from the seating surface side (upper side in the drawing), and in a recess 11H formed on the bottom surface 11E side (lower side in the drawing). The second leg 15 can be stored.

As shown in FIG. 2, the first leg 14 is formed by bending a plate material, and is pivoted laterally about a pivot shaft 14 </ b> B provided on the base portion 13, thereby causing the base portion 13. (See FIG. 4). The rotation shaft 14B is disposed so as to be located on the same straight line with respect to the first rotation shaft 15C described above. Here, the first leg 14 is always urged by a urging member (not shown) in a direction in which the first leg 14 is flipped up laterally about the rotation shaft 14B. This urging force is locked by a lock member (not shown) in the seatable state.
As shown in FIG. 1, the first leg 14 is set to have a longer length in the front-rear direction (the left-right direction in the drawing) in the seatable state than the second leg 15 described above. Is also formed to support a large load. Further, the base portion 13 and the first leg 14 are disposed such that the front ends thereof are rearward (rightward in the drawing) as compared to the front end of the seat cushion 11 in the seatable state.

As shown in FIGS. 1 to 4, the first leg 14 is provided with a plurality (two in this embodiment) of strikers 14 </ b> A at the lower portion thereof. The second leg 15 is provided with a single striker 15A at the lower part thereof. These strikers 14A and 15A engage with a sliding member C7 that is slidably connected to a floor surface C2 of the automobile C via a slide rail C6 in the front-rear direction (left-right direction as viewed in FIG. 1) in a seatable state. It is supposed to be.
Further, as shown in FIGS. 1 to 4, the space-up mechanism 13A of the base portion 13 is slidable in the front-rear direction (left-right direction as viewed in FIG. 1) via the slide rail C5 fixed to the wall surface C1 described above. It is connected to. For this reason, the vehicle seat 10 is slidable in the front-rear direction by the slide rail C5 and the slide rail C6 in a seatable state.

By the way, in the tip-up state, the front end 11I of the seat cushion 11 is forward (see FIG. 5) with respect to the front end 13C of the base portion 13 and the front end 14C of the first leg 14, as shown in FIGS. Left). Further, the second leg 15 is stored so as to be folded along the bottom surface 11E of the seat cushion 11 in the tip-up state.
With this configuration, in the tip-up state, the slide to the rear of the slide sheet C3 is prevented from being hindered by the first and second legs 14 and 15 and the base portion 13, and the slide sheet C3 is moved to the rear. The slidable range can be greatly expanded backward.

As shown in FIGS. 3 and 5, the bottom surface 11 </ b> E of the seat cushion 11 is tilted rearward so as to face upward in the tip-up state. Then, the seat cushion 11 can further widen the rearward slidable range of the slide seat C3 by making the backward tilt correspond to the backward tilt of the seat back C4 in the forward slide seat C3.
Further, the cushion pad 11G provided on the seating surface side of the seat cushion 11 is extended to the bottom surface 11E side at the front end portion 11F of the seat cushion 11. That is, as shown in FIG. 3, the cushion pad 11G is also provided on the upper and front portions in the chip-up state.
As a result, the front slide seat C3 is slid rearward, and when the back surface of the seat back C4 comes into contact with the upper and front portions of the seat cushion 11 in the tip-up state, the slide seat C3 is softly contacted via the cushion pad 11G. This can reduce the impact at the time of contact.

  In the vehicle seat 10 of the above-described embodiment, the slide seat C3 can be largely slid rearward by entering the above-described tip-up state (see FIG. 3). Moreover, in the vehicle seat 10, a space for placing luggage or the like can be secured by entering the above-described space-up state (see FIG. 4). Hereinafter, the transition of the vehicle seat 10 to each of the above states will be described with reference to FIG. In FIG. 2, additional members such as levers and wires for operating the tip-up mechanism 11B and the space-up mechanism 13A are not shown.

  First, the transition from the seatable state of the vehicle seat 10 (see FIG. 1) to the space-up state (see FIG. 4) will be described. When a lever (not shown) for operating the space-up mechanism 13A is operated in a state where the seat back 12 (see FIG. 1) is tilted toward the seat cushion 11, the strikers 14A of the first and second legs 14 and 15 are operated. , 15A are disengaged, and the first and second legs 14, 15 are disconnected. For this reason, the passenger | crew of the motor vehicle C can flip up the vehicle seat 10 of the folded state to the side so that the wall surface C1 may be met.

Here, the first leg 14 is provided with a storage means for storing the first leg 14 in a state where the first leg 14 is folded into the base portion 13 when the vehicle seat 10 shifts to the space-up state (illustration). (Omitted). That is, the storage means detects the flip-up angle of the base portion 13 by the space-up mechanism 13A, and unlocks the rotation of the first leg 14 when the flip-up angle exceeds a predetermined value. It is like that. Thereby, the 1st leg 14 is flipped up sideways by the urging | biasing force of the urging | biasing member mentioned above, and is folded in the storage state along the base part 13 (refer FIG. 4).
Further, the joint 15B described above detects the flip-up angle of the base portion 13 by the space-up mechanism 13A, and when the flip-up angle exceeds a predetermined value, the second leg 15 is turned to the side. To unlock. For this reason, the second leg 15 is flipped up sideways by the urging force of the joint 15B, and is folded into a retracted state along the bottom surface 11E of the seat cushion 11 (see FIG. 4).

With the above-described configurations, the passenger of the automobile C can fold the vehicle seat 10 into a space-up state, and can fix the vehicle seat 10 in that state. In addition, the first and second legs 14 and 15 are automatically folded when shifting to the space-up state.
Note that the vehicle seat 10 returns each member that has been rotated during the transition to the space-up state to a seatable position by rotating the respective members against their respective urging forces, and locks the rotation of each member. When it is applied again, it returns to the seatable state from the space-up state.

When the tip-up mechanism 11B is operated from the above-described seatable state, the vehicle seat 10 shifts to a tip-up state in which the front end portion 11F of the seat cushion 11 is rotated backward with respect to the base portion 13. That is, when a lever (not shown) that operates the tip-up mechanism 11B is operated, the striker 15A of the second leg 15 is first disengaged to disengage the second leg 15 and the lock mechanism 11D is locked. Canceled. For this reason, the tip-up mechanism 11B is rotated by the urging force so as to flip up the front end portion 11F of the seat cushion 11 (that is, upward and backward).
The lever that operates the tip-up mechanism 11B cannot be operated when the seat back 12 is tilted toward the seat cushion 11 (see FIG. 4).

  Here, the joint 15B described above detects the flip-up angle of the seat cushion 11 by the tip-up mechanism 11B, and when the flip-up angle exceeds a predetermined value, the second leg 15 rotates backward. To unlock. Therefore, the second leg 15 is flipped up rearward by the urging force of the joint 15B and stored in a state of being folded inside the seat cushion 11 (see FIG. 3).

Incidentally, as shown in FIGS. 1 and 3, the first leg 14 does not operate when the vehicle seat 10 is shifted to the tip-up state. For this reason, the base 13 is maintained in a state in which the base 13 is locked to the slide rail C6 so as to be slidable in the front-rear direction. Further, as described above, the base portion 13 is connected to the slide rail C5 via the space-up mechanism 13A so as to be slidable in the front-rear direction. Thereby, the vehicle seat 10 can slide in the front-rear direction even in the tip-up state.
Here, the first leg 14 is set to have a longer length in the front-rear direction (left-right direction as viewed in FIG. 1) than the second leg 15 and can support a larger load than the second leg 15. It is formed as follows. Thereby, the reduction | decrease of the load resistance of the vehicle seat 10 by transfer to a chip-up state can be suppressed, and the vehicle seat 10 can be stabilized in a chip-up state.

With each configuration described above, the passenger of the automobile C can fold the vehicle seat 10 into a tip-up state by operating only one lever. Further, the second leg 15 is automatically folded when shifting to the tip-up state.
The vehicle seat 10 rotates the respective members that have been rotated at the time of transition to the tip-up state against the respective urging forces to return them to their seatable positions, and locks the rotation of the respective members. When applied again, it returns from the tip-up state to the seatable state.

As mentioned above, although embodiment of this invention was described using 1st and 2nd embodiment, this invention can be implemented with the following various forms other than said each embodiment.
1: The space-up mechanism can be configured such that the vehicle seat is flipped up in a state in which the seat back is tilted rearward and the entire vehicle seat is spread flat.
2: The specific connection structure of the space-up mechanism can be appropriately set. For example, a structure in which the space-up mechanism is connected to the floor surface of the automobile or a structure in which the space-up mechanism is connected so as not to slide is used. it can.
3: A configuration in which the space-up mechanism is omitted can be used.
4: The shape and size of the first and second legs can be changed as appropriate.
5: A configuration in which the first and second legs are locked so as not to slide with respect to the floor surface can be used.
6: The rotation axis of rotation and the direction of rotation in which the first and second legs are folded can be appropriately set.
7: When the first and second legs are folded, whether or not the legs are stored in the seat cushion or the base portion can be changed as appropriate.
8: A configuration in which the first leg cannot be folded and stored can be used. However, in this case, since the first leg protrudes from the base portion, the space secured by the space-up state may be reduced.
9: A configuration in which a cushion pad is provided on the bottom side of the front end portion of the seat cushion can be used separately from the cushion pad provided on the seating surface side of the seat cushion.
10: The structure which abbreviate | omitted the cushion pad provided in the bottom face side of the front-end part of a seat cushion can be used. However, in this case, there is a possibility that the seat back of the front slide seat cannot be softly brought into contact with the seat cushion in the tip-up state.
11: A configuration in which the seat cushion is inclined forward so that the bottom surface of the seat cushion faces downward in the tip-up state can be used. However, in this case, there is a possibility that the slidable range to the rear of the slide seat becomes narrow.
12: The urging means applied between each member of the vehicle seat can be eliminated.
13: The type of vehicle to which the vehicle seat of the present invention is applied and the arrangement position of the vehicle seat can be appropriately set.

DESCRIPTION OF SYMBOLS 10 Vehicle seat 11 Seat cushion 11A Cushion frame 11B Tip-up mechanism 11C Rotating shaft 11D Locking mechanism 11E Bottom surface 11F Front end portion 11G Cushion pad 11H Recess 11I Front end 12 Seat back 12A Back frame 12B Reclining mechanism 12C Switching link 12D Rotating shaft 12E Spiral spring 13 Base portion 13A Space-up mechanism 13B Rotating shaft 13C Front end 14 First leg 14A Striker 14B Rotating shaft 14C Front end 15 Second leg 15A Striker 15B Joint 15C First rotating shaft 15D Second rotation Axis C Automobile C1 Wall C2 Floor C3 Slide seat C4 Seat back C5 Slide rail C6 Slide rail C7 Sliding member

Claims (3)

A vehicle seat disposed behind a slide seat disposed in a vehicle,
The seat cushion is configured to shift from a seatable state to a tip-up state by rotating backward so as to jump up the front end portion of the seat cushion with respect to the base portion.
A first leg that supports a load applied to the base portion between the base portion and a floor surface of the vehicle on which the slide seat slides is coupled,
A second leg is connected to the front end portion of the seat cushion to support a load applied to the seat cushion with the floor surface,
The second leg is configured to be folded along a bottom surface of the seat cushion;
The vehicle seat according to claim 1, wherein the first leg is disposed rearward of a front end of the seat cushion in the tip-up state. The vehicle seat according to claim 1,
The vehicle seat according to claim 1, wherein the bottom surface of the seat cushion is tilted rearward in the tip-up state. The vehicle seat according to claim 1 or 2,
A vehicle seat, wherein a cushion pad is provided on the bottom surface side of the front end portion of the seat cushion.

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