JP2005022557A - Seat device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a seat device from being slid with a seat back in a state of being reclined forward to the maximum at walk-in operation, and to secure a seat slide amount. <P>SOLUTION: This seat device for a vehicle is provided with a reclining mechanism R for reclining the seat back B forward, a slide mechanism S for sliding the seat device in the longitudinal direction of the vehicle, and a walk-in mechanism W for operating the reclining mechanism R and the slide mechanism S by single operation. The walk-in mechanism W is constituted so that the forward reclining of the seat back B can be restricted until the seat device slides toward a vehicle front to reach a prescribed position. The prescribed position is set at the vehicle front side of the position where the front side of the seat device is brought into contact with a structure in front of the seat device when the seat device is slid toward the vehicle front side with the seat back B in a state of being reclined forward to the maximum. Accordingly at walk-in operation, the seat back can be prevented from being reclined forward before the seat device is brought into contact with the structure in front, and the seat slide amount can be secured. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle seat device, and more particularly to a vehicle seat device having a walk-in mechanism.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a front seat and a second seat in a vehicle seat device have been provided with a walk-in mechanism for facilitating getting on and off a passenger in a rear seat.
In other words, the reclining mechanism can be unlocked and the sliding mechanism unlocked simultaneously by a single operation, and the reclining mechanism is moved while the seat device is moved forward by unlocking the sliding mechanism. By unlocking the mechanism, the seat back is tilted forward to ensure a large space for passengers to get on and off.
[0003]
Here, if the seatback immediately falls to the front side of the vehicle during the walk-in operation, it becomes difficult for the occupant to put a hand on the seatback when the seat device moves to the front side of the vehicle, and the operability deteriorates. .
Therefore, Patent Document 1 below discloses that when the walk-in operation is performed, first, the slide mechanism is unlocked and then the reclining mechanism is unlocked.
Specifically, when the wire of the walk-in mechanism is stroked by a predetermined amount (the stroke amount indicated by L ′ in FIG. 2), the slide mechanism is unlocked, and then the wire of the walk-in mechanism is further stroked to the predetermined amount. It is disclosed that the reclining mechanism is unlocked when a stroke is made (a stroke amount indicated by L in FIG. 2, L ′ <L).
According to Patent Document 1, since the reclining mechanism is not unlocked immediately after the start of the walk-in operation, the seat back is maintained in a standing state, and it is easy for the occupant to place the hand on the seat back. The movement operability to the side can be ensured.
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-2222057
[Problems to be solved by the invention]
However, according to Patent Document 1 described above, during the walk-in operation, there is a state in which the seat back is slid forward in a state where the seat back is maximally moved forward. There is a problem in that the seat device cannot be slid sufficiently forward and the space required for passengers to get on and off cannot be secured sufficiently.
That is, in the walk-in mechanism in Patent Document 1, the unlock timing of the slide mechanism and the reclining mechanism is set based on the relationship with the wire stroke amount of the walk-in mechanism, and the distance from the structure on the vehicle front side Not set based on the relationship.
Therefore, although the reclining mechanism lock is released later than the slide mechanism lock, the distance between the seat to be moved and the structure provided in front of the seat is set long (long slide). ), The slide mechanism and the reclining mechanism are both released, and the seat back may be slid forward in a state where the seat back is maximally moved forward. When the seat device is slid forward in such a state, the seat The front end side of the device hits the instrument panel, the front row side seat device, etc., and the seat device cannot be fully slid forward.
[0006]
The present invention has been made in consideration of the above-described problems, and suppresses a state in which the seat device is slid to the front side of the vehicle in a state where the seat back is moved forward to the maximum during the walk-in operation. It is an object of the present invention to provide a vehicle seat device that can secure a sufficient amount of sliding of the device.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides the following solution as a solution. That is, in the first configuration of the present invention, the seat cushion that allows the occupant to sit down, and extends substantially upward from the rear end of the seat cushion, can support the occupant's upper body. A seat device including a seat back;
A reclining mechanism capable of tilting the seat back forward about the lower end side of the seat back as a rotation center;
A sliding mechanism capable of sliding the seat device in the vehicle longitudinal direction with respect to the vehicle floor;
In a vehicle seat device comprising a walk-in mechanism capable of operating the reclining mechanism and the slide mechanism by a single operation,
The walk-in mechanism is configured to restrict the forward tilt of the seat back until the seat device is slid forward and reaches a predetermined position.
The predetermined position is such that when the seat device is slid to the front side of the vehicle with the seat back tilted to the maximum, the front end side of the seat device contacts a structure provided in front of the seat device. It is configured to be set on the vehicle front side with respect to the position of the device.
According to the first configuration of the present invention, when the seat device slides forward with the walk-in operation, the seat device is slid forward while the seat back is tilted forward to the maximum. Since the forward tilt of the seat back is restricted until it is slid to a predetermined position, which is set on the vehicle front side with respect to the seat position in contact with the structure provided in front of the seat device, the structure on the front side It is possible to prevent the seat back from being tilted forward to the maximum before it hits, and to ensure a sufficient amount of sliding of the seat device.
[0008]
In the second configuration of the present invention, the seat device is a front row seat device provided in the front row of the vehicle, and the structure is an instrument provided in front of the front row seat. It is configured to be a panel.
According to the second configuration of the present invention, when the front row seat device slides forward with the walk-in operation, the seat back of the front row seat device is tilted forward to the maximum before it hits the instrument panel. Is suppressed, and the sliding amount of the front row seat device can be secured sufficiently.
[0009]
Further, in the third configuration of the present invention, the seat device includes a front row side seat device provided on the front side of the vehicle and a rear row side seat device provided on the rear side of the front row side seat. The body is configured to be the front row side seat device.
According to the third configuration of the present invention, when the rear row seat device slides forward with the walk-in operation, the seat back of the rear row seat device is maximized before the rear row seat device hits the front row seat device. Therefore, the sliding amount of the rear row side seat device can be sufficiently secured.
[0010]
In the fourth configuration of the present invention, the seat device is provided with a headrest that is provided above the seat back and is capable of supporting the head of the passenger.
The seat device provided with the headrest has a structure in which the seat length in the vehicle front-rear direction when the seat back is tilted forward to the maximum with respect to the seat device not provided with the headrest is increased by the amount of the headrest, and the structure of the front and front sides of the seat device Since a sufficient space between the body and the body cannot be secured, a sufficient amount of sliding is particularly required.
According to the fourth configuration of the present invention, even in a seat device that includes a headrest and the seat length in the vehicle front-rear direction when the seat back is tilted forward is increased by the headrest, to the front side of the seat device associated with the walk-in operation. At the time of sliding, the seat back is prevented from being tilted forward to the maximum before the seat device hits the front structure, and a sufficient amount of sliding can be secured.
[0011]
In the fifth configuration of the present invention, the seat back is configured to be able to tilt forward to a substantially horizontal position of the vehicle, and a state in which the seat back is tilted forward to the maximum is set to a substantially horizontal position of the vehicle. It is.
There are various degrees of forward inclination of the seat back, and in particular, in the case of a seat back that is inclined forward to a horizontal position, the seat length in the vehicle front-rear direction when the seat back is tilted forward to the maximum lengthens. Securing the slide amount is required.
According to the fifth configuration of the present invention, in a vehicle that can tilt forward until the seat back reaches a substantially horizontal position, the seat can be prevented from hitting the front of the vehicle, and a sufficient seat slide amount can be ensured.
[0012]
【The invention's effect】
According to the present invention, during a walk-in operation, it is possible to suppress a state in which the seat device is slid to the front side of the vehicle in a state where the seat back is moved forward to the maximum, and to ensure a sufficient amount of sliding of the seat device Can do.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a vehicle perspective view showing a seat row arrangement of a vehicle according to an embodiment.
In the vehicle V, a first sheet row 1 arranged in the front row of the vehicle, a second sheet row 2 arranged behind the first sheet row 1, and a second sheet arranged behind the second sheet row 2. Three sheet rows 3 are arranged.
And in this Embodiment, the example which applies the walk-in mechanism W mentioned later to the 2nd sheet row 2 is shown. Since the same mechanism is applied to the left seat 2a and the right seat 2b in the second seat row 2, the left seat 2a will be described below as a representative.
[0014]
Next, details of the left seat 2a will be described with reference to FIG.
FIG. 2 is a perspective view of the left seat 2a (the front seat in FIG. 1) of the second seat row 2. FIG. In FIG. 2, the headrest and the seat cushion are not shown.
In FIG. 2, B is a seat back, 4 is a seat cushion frame in which a seat cushion (not shown) can be arranged, 5 is a pair of upper rails arranged on the left and right of the left seat 2a, and 6 is the upper rail. 5 is a lower rail that allows the left seat 2a to slide in the vehicle front-rear direction.
[0015]
When the seat back B is tilted forward by a reclining mechanism R, which will be described later, the seat back B is configured to be able to tilt forward until the maximum forward tilted state becomes a substantially horizontal position of the vehicle.
The seat back B is provided with an operation lever 7 for operating the walk-in mechanism W on the upper side, and a wire member 8 connected to a slide mechanism S described later is connected to the operation lever 7. ing.
[0016]
The walk-in mechanism W has a front-end side fixed to the lower rail 5 and a rear-end side fixed to a fixing member 9 extending downward from the rear end side of the seat cushion frame 4 and a walk-in slide spring 10 The slide mechanism S and the reclining mechanism R, which will be described later, are connected via the wire member 8.
[0017]
The seat cushion frame 4 is provided with a reclining mechanism R on the rear outer side and a slide mechanism S on the front inner side.
[0018]
The reclining mechanism R includes a reclining lever 11, an unlocking member 12, a wire member 13 that connects the reclining lever 11 and the unlocking member 12, and an engaging member 14.
The reclining lever 11 is constantly biased downward by the spring member 15, and when the reclining lever 11 is pulled upward by the occupant, the lock is released against the biasing force of the spring member 15. .
The unlocking member 12 and the engaging member 14 are arranged on the same line in the vehicle front-rear direction on the inner side of the lower rail 6, and when the left seat 2a is moved forward of the vehicle, both the members 12, 14 are in contact with each other. When the left seat 2a is moved to the rear of the vehicle, the contact of both the members 12, 14 is released.
Further, as shown in FIG. 3, when the left seat 2a is slid to the front side of the vehicle in a state where the seat back B of the left seat 2a is tilted forward to a substantially horizontal position, as shown in FIG. The front end position of the seat cushion where the front end of the headrest hits the back of the seat back of the first seat row 1 is disposed on the vehicle front side with respect to the predetermined position L0.
Accordingly, when the reclining lever 11 is operated upward or when the walk-in mechanism W is operated, the left seat 2a is slid to the front side of the vehicle, and the lower end side of the unlocking member 12 comes into contact with the engaging member 14 to unlock the unlocking member 12. When the reclining lever 11 is rotated upward against the urging force of the spring member 15 by rotating counterclockwise, the reclining mechanism W is unlocked and the seat back B can be reclined. It is said.
[0019]
The slide mechanism S is configured to be able to slide in the vehicle front-rear direction by the upper rail 5 and the lower rail 6 described above.
Furthermore, the slide mechanism S is disposed on the front side of the vehicle with respect to the first link member 16 connected to the wire member 8 and on the front side of the first link member 16. Two link members 17 and a lock member that is connected to the first link member 16 and restricts sliding of the left seat 2a in the vehicle front-rear direction by engaging with any one of a plurality of grooves 18 formed in the lower rail 6. 19, and a lock return member configured to be able to contact the lower side of the second link member 17 in the unlocked state, and to allow the lock member 19 to be engaged with the groove portion 18 by contact with the second link member 17. 20.
The first link member 16 and the second link member 17 are provided only on the inner side of one side of the seat cushion frame 4 (the back side in FIG. 2).
Further, the lock member 19 is provided on both inner sides of the seat cushion frame 4, and the lock member 19 on the side where the first link member 16 and the second link member 17 are not provided is connected via an interlocking member 21. ing.
The lock return member 20 is provided on the inner rear side of the lower rail 6 on the side where the first link member 16 and the second link member 17 are provided.
[0020]
As shown in FIG. 4, the first link member 16 includes a first spring member 16 b having a biasing force that biases the first link member 16 counterclockwise around a fulcrum 16 a. The first spring member 16 b has one end connected to the first link member 16 and the other end connected to the seat cushion frame 4.
As shown in FIG. 4, the second link member 17 includes a second spring member 17 b having a biasing force that biases the second link member 17 counterclockwise around the fulcrum 17 a. The second spring member 17 b has one end connected to the second link member 17 and the other end connected to the seat cushion frame 4.
Therefore, when the first link member 16 is not pulled counterclockwise (right side in the figure) by the wire member 8, as shown in FIG. 4A, the connecting member 16c connected to the lock member 19 is substantially the vehicle. Since it is positioned horizontally, the lock member 19 is actuated downward and engaged with the groove 18 to be locked.
Further, as shown in FIG. 4B, when the wire member 8 is pulled to the right in the drawing as the operation lever 7 is operated, the first link member 16 resists the urging force of the first spring member 16b. Since it rotates counterclockwise, the connecting member 16c connected to the lock member 19 is operated upward, the lock member 19 is also operated upward, the engagement with the groove 18 is released, and the locked state is released. .
At this time, the second link member 17 is configured to be engaged with the engaging portion 16d of the first link member 16 to maintain the unlocked state.
The return from the unlocked state shown in FIG. 4 (B) to the locked state shown in FIG. 4 (A) slides the left seat 2a to the vehicle rear side, and the rear end of the second link member 17 is the lock return member. This can be done by contacting 20.
That is, when the left seat 2a is slid to the rear side of the vehicle and the rear end of the second link member 17 comes into contact with the lock return member 20, the second link member 17 is rotated in the clockwise direction. Since the engagement with the engaging portion 16d is released, the first link member 16 is also rotated clockwise, the connecting member 16c is operated downward, the lock member 19 is operated downward, and the groove 18 is engaged. To lock again.
[0021]
Next, the operation of the walk-in mechanism W will be described with reference to FIGS.
FIG. 5 is a diagram illustrating the unlocking and unlocking operations of the seat slide mechanism S, and FIG. 6 is a diagram illustrating the unlocking and unlocking operations of the seat reclining mechanism R.
In FIG. 5, only the slide mechanism S is disclosed, and in FIG. 6, only the reclining mechanism R is disclosed.
[0022]
FIG. 5A shows a state in which the lock member 19 of the slide mechanism S is locked, and when the operating lever 7 of the walk-in mechanism W is pulled up from this state, it is shown in FIG. 5B. As described above, the first link member 16 is rotated counterclockwise about the fulcrum 16a via the wire 8, and the lock member 19 connected to the first link member 16 is pulled upward to be unlocked. Therefore, the seat is slid forward of the vehicle by the biasing force of the walk-in slide spring 10 (not shown in FIG. 5).
[0023]
Thereafter, when the seat is slid toward the vehicle rear side from the state shown in FIG. 5B, the lower side of the second link member 17 comes into contact with the lock return member 20 as shown in FIG. Since the link member 17 is rotated clockwise, the engagement of the second link member 17 with the engaging portion 16c of the first link member 16 is released, and the first link member 16 is also rotated clockwise. .
As a result, the lock member 19 is moved downward, and the lock member 19 is engaged with the groove portion 18 to be in a locked state, and the sliding of the seat is restricted.
[0024]
Next, the operation of the reclining mechanism R will be described.
FIG. 6A shows the position of the seat before the seat slide where the slide of the seat is restricted by the locking of the slide mechanism S. In this state, the reclining mechanism R is also locked and the reclining is restricted. .
From this state, as described with reference to FIG. 5B, the slide mechanism S is unlocked by the operation of the walk-in mechanism W, and the seat is slid to the front side of the vehicle. 3, that is, the lower side of the lock release member 12 comes into contact with the engaging portion 14.
As a result, the unlocking member 12 rotates in the clockwise direction, the wire member 13 is pulled toward the front side of the vehicle, and the reclining lever 11 is pulled upward against the urging force of the spring member 15, so that the reclining mechanism R ( Unlocked (not shown) is released, and the seat back B is reclined to the front side of the vehicle.
[0025]
Thereafter, when the seat back B is lifted upward from the state shown in FIG. 6B and the seat is slid toward the vehicle rear side, as shown in FIG. 6C, the engagement member 14 of the lock release member 12 is obtained. Is released, the unlocking member 12 returns to the vertical state by the urging force of the spring member 15, and the reclining mechanism R is again locked.
[0026]
As described above, according to the present embodiment, when the second seat row 2 slides forward with the walk-in operation, the seat is in a state where the seat back B of the second seat row 2 is tilted forward to the maximum. When the seat is slid forward, the seat is slid to a predetermined position L0 set on the front side of the vehicle with respect to the seat position in contact with the back of the seat back of the first seat row 1 provided in front of the second seat row 2. Until the seat back B is restricted, the seat back B is prevented from being tilted forward to the maximum before it hits the back of the seat back of the first seat row 1 on the front side. Enough can be secured.
Specifically, as shown in FIG. 3, the second seat row 2 when the seat back B slides most forward in the state where the seat back B is tilted forward to the approximately horizontal position immediately after the start of the walk-in operation. The rear end L2 of the second sheet row 2 when the rear seat back B is slid forward from the predetermined position L0 by sliding the front side of the seat with respect to the rear end L1 is a distance L. It is located only on the vehicle front side, and the slide amount of the second seat row can be increased by the distance L.
Further, since the present invention is applied to the second seat row 2 provided with the headrest, a sufficient amount of sliding is ensured in the second seat row 2 in which the seat length in the vehicle front-rear direction when the seatback B is tilted forward is increased by the headrest. can do.
Further, since the present invention is applied to the second row 2 configured to be able to lean forward until the seat back B is substantially horizontal, the seat length in the vehicle front-rear direction when the seat back B leans forward becomes long. In the second sheet row, a sufficient sheet slide amount can be ensured.
[0027]
In the present embodiment, the example in which the present invention is applied to the second sheet row 2 has been described. However, the present invention may be applied to the first sheet row 1. In that case, the seat back of the first sheet row 1 is prevented from being tilted forward to the maximum before it hits the instrument panel I, and a sufficient amount of sliding of the first sheet row 1 can be ensured.
[0028]
In addition, as a seat to which the present invention is applied, a seat having a flip function in which the seatback is tilted forward to a substantially horizontal position of the vehicle and the seat is flipped upward to the rear of the vehicle, or the rear portion of the seat is flipped upward to the vehicle Later, the seat back can be applied to a seat having a fold function of tilting forward to a substantially horizontal position of the vehicle.
[Brief description of the drawings]
FIG. 1 is a vehicle perspective view showing a seat row arrangement of a vehicle according to an embodiment.
FIG. 2 is a diagram illustrating a structure of a sheet apparatus according to an embodiment.
FIG. 3 is a diagram illustrating a sliding state of a sheet according to the embodiment.
FIG. 4 is a diagram showing details of a first link member and a second link member of the embodiment.
FIG. 5 is a diagram illustrating unlocking and unlocking operations of the seat slide mechanism S according to the embodiment.
FIG. 6 is a diagram illustrating unlocking and unlocking operations of the seat reclining mechanism R according to the embodiment;
[Explanation of symbols]
V: Vehicle 1: First seat row 2: Second seat row 2a: Left seat 2b: Right seat 3: Third seat row 5: Upper rail 6: Lower rail 7: Actuation lever 8: Wire member 10: Walk-in slide spring 11: Reclining lever 12: Lock release member 14: Engagement member 16: First link member 17: Second link member 18: Groove 19: Lock member 20: Lock return member W: Walk-in mechanism R: Reclining mechanism S: Slide Mechanism L0: Predetermined position

Claims (5)

A seat device including a seat cushion capable of seating an occupant, and a seat back extending substantially upward from the rear end of the seat cushion and capable of supporting the upper body of the occupant;
A reclining mechanism capable of tilting the seat back forward about the lower end side of the seat back as a rotation center;
A sliding mechanism capable of sliding the seat device in the vehicle longitudinal direction with respect to the vehicle floor;
In a vehicle seat device comprising a walk-in mechanism capable of operating the reclining mechanism and the slide mechanism by a single operation,
The walk-in mechanism is configured to restrict the forward tilt of the seat back until the seat device is slid forward and reaches a predetermined position.
The predetermined position is such that when the seat device is slid to the front side of the vehicle with the seat back tilted to the maximum, the front end side of the seat device contacts a structure provided in front of the seat device. A vehicle seat device, wherein the vehicle seat device is set on the vehicle front side of the position of the device. The seat device is a front row seat device provided in the front row of the vehicle,
The vehicle seat device according to claim 1, wherein the structure is an instrument panel provided in front of the front row seat. The seat device includes a front row side seat device provided on the front side of the vehicle, and a rear row side seat device provided behind the front row side seat,
The vehicle seat device according to claim 1, wherein the structure is the front row side seat device. The vehicle seat according to any one of claims 1 to 3, wherein the seat device includes a headrest provided on the upper side of the seat back and capable of supporting a passenger's head. Sheet device. 5. The vehicle seat according to claim 1, wherein the seat back is configured to tilt forward to a substantially horizontal position of the vehicle, and a state in which the seat back is tilted forward to the maximum is a substantially horizontal position of the vehicle. The vehicle seat device according to one.

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