JP2003165362A - Movable center seat structure of vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simplify a formation and allow a center seat to be attached and detached from a vehicle floor. <P>SOLUTION: This movable center seat structure comprises a lock member 24 installed in a seat base 14 at a generally center part in an effective flat area and an unlocking lever 58 for unlocking the lock member. Liftable casters 26 energized downward by the spring force of a spring member 52 are installed at the front and rear of the seat base 14. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable vehicle in which at least two front and rear seat rows can be moved between center spaces defined between left and right seats and can be selectively installed in each center space. Mold center sheet structure.

[0002]

2. Description of the Related Art Movable center seats can be moved between at least two front and rear rows, for example, front seats and second seats, and can be selectively arranged in each center space. This seat configuration has been adopted in automobiles such as one-box cars and minivans that have a so-called walk-through layout.

Examples of this type of seat structure having a movable center seat include those disclosed in Japanese Unexamined Patent Publication No. 10-100747 and Japanese Unexamined Patent Publication No. 2001-1805. The center seat is configured to move (slide) in the vehicle front-rear direction along a rail body provided on the vehicle floor. Then, the center seat can be selectively arranged in any one of the center spaces of the front seat and the center space of the second seat under the slide lock in the corresponding place.

[0004]

By the way, in the seat structure having the movable center seat as described above,
Usually, a rail body for a center seat is often embedded in the vehicle floor. According to this, there is no protrusion of the rail body on the vehicle floor surface, and thereby the flatness of the vehicle floor surface can be secured sufficiently high, so that the movement of the occupant between the front and rear seat rows in the walk-through layout and the vehicle interior space The effective use of the rails can be easily performed without being hindered by the rail body.

However, such embedding of the rail body in the vehicle floor is liable to complicate the vehicle floor structure. Since a so-called long rail having a length that hangs between the front seat and the second seat is generally used as this type of rail body, use of such a rail body increases the weight of the vehicle itself. It is easy to invite such things.

Further, in the well-known general rail body used for the center seat, it is not easy to remove the center seat from the rail body, so that the front seat and the second seat cannot both be walk-throughs.

According to the present invention, it is possible to move the center seat in the vehicle front-rear direction and selectively install and fix the center seat in the center space of a desired seat row without providing a rail body on the vehicle floor. It is an object of the present invention to provide a movable center seat structure for a vehicle that enables easy removal of the center seat from the vehicle floor.

Another object of the present invention is to provide a movable center seat structure for a vehicle, which simplifies the overall structure and simplifies locking and unlocking operations.

[0009]

In order to achieve this object, according to claim 1 of the present invention, a locking member lockable to a striker of a vehicle floor is provided in an effective plane area defined in a seat base. And a lock release lever for releasing the lock of the lock member. In addition, casters that can move up and down between upper and lower positions with respect to the lower end of the outer shape of the lock member are provided at least at the front and rear positions of the seat base, and are biased and held at the lower position thereof by the spring force of the spring member. is doing.

Then, the lock member unlocked by operating the lock release lever is lifted up by the spring force of the spring member to push down the entire center seat and is separated from the striker. By setting the grounding point of the caster after the lock member is separated from the striker to a position below the lower end of the outer shape of the lock member, the caster rolls on the vehicle floor surface in the vehicle front-rear direction. The center seat can be moved, and the center seat can be removed from the vehicle floor.

According to the second aspect of the present invention, the lock member is arranged at one substantially central portion of the effective plane area defined by the seat base.

Further, according to claim 3 of the present invention, a damper member capable of elastic compression deformation is arranged at a peripheral position of the lock member while being fixed to the seat base. .

According to a fourth aspect of the present invention, the damper member is formed as a rubber damper.

Further, according to a fifth aspect of the present invention, the damper member is arranged at a location including at least four corner portions of an effective plane area defined in the seat base,
It is fixed.

According to a sixth aspect of the present invention, a positioning recess for hypothetically retaining the caster at the aligned position of the lock member with respect to the striker is formed at a corresponding position on the vehicle floor surface.

According to a seventh aspect of the present invention, the lock release levers are provided at the front and rear positions of the seat base, respectively, and the front and rear lock release levers and the lock member are connected so as to be interlockable with each other. By
A selective unlocking operation can be performed on the front side and the rear side of the center seat.

Further, according to claim 8 of the present invention, the seat back is connected to and supported by the seat base so as to be able to be tilted forward through a predetermined hinge means, and the tilt-down detection means is provided for the seat back. Disengagement preventing means is provided so as to be able to detect the forward tilting, and unlocking means interlocking with the forward tilting detecting means is provided so as to prevent the operation of the lock release lever. Then, in the standing position of the seat back in which the forward tilt of the seat back is not detected by the forward tilt detection means, the operation of the lock release lever is disabled under the operation blocking of the release blocking means, and the forward tilt is performed. Only when the forward tilt of the seat back is detected by the detection means, the lock release lever can be operated under the blocking release operation of the release blocking means linked with the forward tilt detection means.

According to a ninth aspect of the present invention, the forward tilt detection means integrally projects on a side surface of the seat back, which moves in an arc around the hinge point of the seat back integrally with the seat back. And a release lever that has an engagement piece engageable with the engagement pin and is rotatably arranged around the hinge point. A blocking lever having a blocking pin for blocking the operation of the unlocking lever under engagement with the unlocking lever; and a return for biasing the blocking lever in the engaging direction of the blocking pin. It is equipped with a spring.

Then, the receiving lever of the forward tilt detection means and the blocking lever of the release blocking means are linked so as to be interlockable by a predetermined linking means, and the receiving lever is rotated by the arc movement of the engaging pin. When the blocking lever rotates in opposition to the spring force of the return spring, the blocking operation of the lock release lever is released by separating the blocking pin from the lock release lever. I am supposed to.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

As shown in FIG. 1, in a movable center seat structure 10 for a vehicle according to the present invention, a center seat 12 is provided.
Are formed by assembling the seat cushion 16 and the seat back 18 to the seat base 14. Then, the lock member 24 that is locked to the vehicle floor 20 and the casters 26 that can roll on the vehicle floor are attached to the seat base 14
2 and FIG. 3, at least two front and rear rows of seats, for example, the front seat 28 and the second seat 30 move between the center spaces 28C and 30C, and the respective center spaces are provided. The center seat 12 is configured so that it can be selectively and fixedly installed.

In a so-called walk-through layout in which passengers can move between different seat rows, a seat forming the front seat 28 and the second seat 30.
The 28L and 28R and the seats 30L and 30R are arranged at left and right spaced positions, respectively, and center spaces 28C and 30C, which serve as occupant passages, are defined and formed between the left and right seats, respectively. The center spaces 28C and 30C are used as the installation space for the center seat 12 and are also used to increase the number of passengers without impairing the walk-through layout or to effectively use the center space.

A walk-through layout as shown in a one-box car, a minivan, etc., and a structure itself in which the center spaces of front and rear seat rows are used as the seat space for the center seats and used together, are disclosed in JP-A-10-10.
As disclosed in JP-A No. 0747, JP-A No. 2001-1805, and the like, which are publicly known and are not the gist of the present invention, detailed description thereof will be omitted here.

As can be seen by adding FIG. 5 to FIG. 4 which is a partially enlarged view of FIG. 1, the seat base 14 of the center seat according to the present invention is, for example, a pipe frame assembled into a substantially V-shaped plane. 32 front and rear frames 32f, 32r
The seat cushion 16 and the seat back 18 are formed by arranging and fixing the side frames 34 at the left and right ends of the seat cushion, and by erection between the side frames and, for example, their fixed support and connection. It is attached to the base (see Figure 1).

Reference numeral 36 in the drawing is a cover plate for covering the outer surface side of the side frame 34. The cover plate 36 is a screw directly or through a bracket or the like (not shown). It is integrally fixed to the side frame under a stop.

Here, as shown in FIGS. 4 and 5, the center seat 12 is engaged with and locked to a locking member capable of locking the vehicle floor 20, for example, a striker 40 fixedly arranged in a recess 38 of the vehicle floor. A locking member 24 having a possible latch 42 is provided. In the present invention, the lock member 24 is arranged and fixed at any one position within the effective plane area defined by the seat base 14, that is, the effective plane area defined between the left and right side frames 34. (See FIG. 1).

As can be seen from FIG. 4 (FIG. 1) and FIG. 5, in the embodiment of the present invention, the locking member is provided.
24 are arranged in one central portion (approximately one central portion) common to the front and rear (left and right in FIGS. 1 and 4) and left and right (left and right in FIG. 5) in the effective plane area of the seat base 14. ing. Further, in this embodiment, the central frame of the pipe frame 32 combined in a plane substantially E shape.
The lock member 24 is attached to the seat base 14 by being fixed to the center portion of the 32c via the bracket 44.

Since the structure of the lock member itself having such a latch is known and the structure itself is not the subject of the present invention, a detailed description of the lock member will be omitted here.

By the way, the center seat according to the present invention
As shown in FIGS. 2 and 3, the reference numeral 12 is configured to be selectively arranged in the center spaces 28C and 30C of the front seat 28 and the second seat 30, so that the corresponding portion of the center space in FIG. The vehicle floor recess 38 and the striker 40 as shown in FIG. 1) and FIG. 5 are provided. In other words, in the present invention, since the locking means 24 is located at one place within the effective plane area defined by the seat base 14, the striker 40 only needs to be located at each of the center spaces 28C and 30C. .

Further, as shown in FIG. 4 (FIG. 1), in the movable center seat structure 10 of the present invention, at least a pair of front and rear casters 26 are provided on the seat base 14,
As shown in FIG. 6 and a partially enlarged view of FIG.
Under the rolling of the casters, the center seat 12 can be moved in the front-rear direction of the vehicle, that is, in the left-right direction in the drawing.

As can be seen from FIG. 4, the casters 26
Is formed, for example, by rotatably supporting the roller 48 on the tip 46a of the support arm 46. And
As shown in FIG. 1, FIG. 4, and FIG. 5, in the embodiment of the present invention, the casters 26 are respectively disposed in the effective plane areas defined in the seat base 14, for example, near the four corners, and By fixing the support arm base ends 46b at the left and right positions of the front and rear support shafts 50-f, 50-r that are erected between the side frames 34 and are pivotally supported, the casters move up and down in a left-right integrated manner. (Fig. 7,
And FIG. 8).

Here, the ascending / descending range of the caster 26 is above the lower end of the outer shape of the lock member 24 shown in FIG. 4 (FIG. 1) and FIG. Synonymous with the grounding point of the lock member) and its descending position shown in FIG. 7 (FIG. 6) and FIG. 8 in which the grounding point of the caster is located below the lower end of the outer shape of the lock member. It is prescribed. That is, in the lower position of the caster 26 with respect to the seat base 14 shown in FIGS. 7 and 8, the ground point of the caster is below the lower end of the outer shape of the lock member 24, so that the center seat is not hindered by the lock member. 12 can be easily moved under the rolling motion of the caster, and as shown in FIGS. 4 and 5, the caster is rotated and stored above the lower end of the outer shape of the lock member to allow the striker to move. The locking of the locking member with respect to 40 is easily possible without being obstructed by the casters.

As shown in FIGS. 4 and 7, this caster 26
Are urged by the spring force of the spring member 52 in the downward projecting direction, that is, in the descending direction with respect to the seat base 14. As the spring member 52, for example, a torsion spring wound around the support shafts 50-f and 50-r can be exemplified, and the ends of the spring are locked to the support arm 46 and the side frame 34, respectively. It is configured to impart power to the casters 26.

The up-and-down range (rotation range) of the caster 26 is defined and limited by, for example, stopper means (not shown) composed of a combination of an arc-shaped elongated hole and an engagement pin.

When the casters 26 are urged downwardly with respect to the seat base 14 as shown in FIG. 7 (FIG. 6) and FIG.
Since the grounding point of the caster is located below the lower end of the outer shape of the lock member 24, the rolling of the caster during the downward urging causes the center seat 12 to move in the vehicle front-rear direction (the left-right direction in FIGS. 6 and 7). It is possible to move, that is, to move the center seat between the center space 28C of the front seat and the center space 30C of the second seat as shown in FIGS. Then, as shown in FIG. 2 or FIG. 3, the center seat 12 is arranged in any of the center spaces 28C and 30C of the front seat and the second seat,
As shown in FIGS. 7 and 8, the striker 40 is attached to the locking member 24.
The center member 12 is pushed downward against the spring force of the spring member 52 at the position where the lock members 24 are aligned.
When is locked to the striker 40, the center seat is selectively and fixedly arranged in any of the center spaces by fixing to the vehicle floor 20 (see FIGS. 1, 4, and 5).

Here, as shown in FIG. 4 (FIG. 1) and FIG. 5, in the present invention, the damper member 54 capable of elastic compression deformation is accompanied by the lock between the lock member 24 and the striker 40. Seat base that allows its pressure contact with the car floor 20
Under fixing to 14, the peripheral position of the locking member, for example, the effective plane area defined in the seat base,
It is placed and fixed in a place that includes at least four corners.

As the damper member 54, for example, a rubber damper formed in a truncated cone shape can be exemplified, and this rubber damper is fixed to the brackets 56 of the front and rear frames 32f and 32r by screwing.

The lower position of the casters 26 with respect to the seat base 14, that is, the vehicle floor 20 shown in FIG. 7 (FIG. 6) and FIG.
From the raised position of the center seat 12 with respect to the spring member 52
When the lock member 24 is locked to the striker 40 under the pushing force of the center sheet against the spring force of the rubber damper (damper member) 54, as shown in FIG. 4 (FIG. 1) and FIG. With compression deformation, the vehicle floor surface 20a is naturally pressure-contacted and grounded. That is, in this configuration, when the locking member 24 and the striker 40 are locked, that is, the center spaces 28C and 30C of the front seat and the second seat.
Since the rubber damper 54 functions as a leg of the center seat 12 when it is fixedly installed on the vehicle seat, stable support of the center seat on the vehicle floor 20 can be easily ensured by the arrangement of the rubber damper.

By the way, the lock member 24 is usually provided with a lock release lever for releasing the lock, but in the present invention, as shown in FIG. 1, the front side and the rear side of the center seat 12 respectively. Front and rear individual lock release levers 58-f and 58-r are provided at the front and rear positions of the seat base 14, respectively, so that the lock release operation can be performed.

The lock release levers 58-f and 58-r have a grip portion 58a, for example, which is substantially circular in a plane as shown in FIG.
As shown in FIG. 9 and FIG. 4 (FIG. 1), the center frame of the seat base is bent and formed into a shape capable of being gripped.
The base 58b of the lever bracket 60 fixed to 32c is pivotally supported in the up-down direction.

Then, the return spring 62, for example, the locking piece 60a of the lever bracket and the locking piece 64 of the base of the unlocking lever are bridged and stretched under the spring force of the tension coil spring. The release levers 58-f and 58-r are urged and held at the lower initial position which is the illustrated position.

The rotation range of the lock release levers 58-f, 58-r with respect to the lever bracket 60 is defined in advance by, for example, a combination of a guide hole and an engagement pin (not shown).

As shown in FIG. 4 (FIG. 1) and FIG. 9, the front and rear lock release levers 58-f, 58-r lock the latch 42 provided on the lock member 24 with the striker 40. The latch holding lever 66 that holds the state is linked to be interlockable. In this embodiment, the bracket
At each end of the rotatable joint plate 68 that is pivotally attached to the 44, the bases 58b of the front and rear lock release levers 58-f, 58-r are
By connecting via a connecting member, for example, rigid connecting wire rods 70, 71, by connecting this joint plate to the latch holding lever 66 of the lock member via a connecting member serving as a rigid connecting wire rod 72, The front and rear lock release levers 58-f and 58-r can rotate the latch holding lever, that is, the lock release operation.

In the locked state of the lock member 24 with respect to the striker 40, that is, in the locked state of the center seat 12 with respect to the vehicle floor 20 shown in FIG. 4 (FIG. 1), either of the front and rear lock release lever levers 58-f, 58-r If it is rotated upward against the spring force of the return spring 62, the lock of the center seat with respect to the vehicle floor is released by unlocking the latch 42 from the striker due to the operation of the latch holding lever 66 accordingly. To be done. And this striker 40,
When the lock between the lock members 24 is released, the holding force for holding the caster 26 in its upper position is lost, so that the caster is urged downward by the spring force of the spring member 52, that is, the downward protrusion of the caster is also caused. Then, the seat base 14 and thus the center seat 12 itself are pushed up, so that the lock member is separated from the striker 40, as shown in FIG. 7 (FIG. 6) and FIG.

In the separated state between the lock member 24 and the striker 40, as described above, the center seat between the center spaces 28C and 30C of the front seat and the second seat as shown in FIGS. 2 and 3, for example. Twelve movements and selective placements are possible under the rolling of casters 26 on the floor surface 20a.

At the lowered position of the caster 26 that separates the lock member 24 and the striker 40 from each other, the caster 26 is merely grounded to the vehicle floor surface 20a, so that the center seat 12 from the vehicle floor 20 is removed. Can be easily removed and the center seat can be easily removed from the vehicle body.

That is, as shown in FIG. 10, it is possible to easily arrange the seat including the removal of the center seat 12 from the center spaces 28C and 30C of the front seat and the second seat, so that the seat arrangement can be diversified. According to the present invention, it is possible to sufficiently secure it.

Here, as shown in FIGS. 6 to 8, in the embodiment of the present invention, the striker 40 in the center spaces 28C, 30C (see FIGS. 2 and 3) of the front seat and the second seat is provided. Positioning recesses 74 that hypothetically retain the casters 26 at the aligned positions of the lock members 24 are formed at corresponding locations on the vehicle floor surface 20a. That is, after the center seat 12 is moved from one of the center spaces 28C and 30C of the front seat and the second seat to the other under the rolling of the casters 26, the casters 26 are placed in the positioning recesses 74.
When the center seat is pushed downward against the spring force of the caster spring member 52 at the position where
Under the locking of the locking member 24 with respect to 40, the center seat is fixedly installed on the vehicle floor 20 as shown in FIGS. 1, 4 and 5.

As described above, in the movable center seat structure 10 for a vehicle according to the present invention, the center seat 12 is moved in the vehicle front-rear direction by the rolling of the casters 26, and the central seat is located at one central portion. Under the lock of the lock member 24 provided in the front seat and the second seat, it is selectively and fixedly installed in the center spaces 28C and 30C. That is, according to the present invention, it is possible to move the center seat 12 in the front-rear direction of the vehicle and to move the center seat at a desired position without using a rail body that is a long rail, or even burying the rail body in the vehicle floor 20. Therefore, even in a vehicle equipped with a movable center seat, simplification of the vehicle floor structure and prevention of an increase in weight of the vehicle itself can be easily ensured.

Then, the lock member 24 from the striker 40
At the time of separation of the lock members, that is, when the lock member is unlocked, the casters 26 are merely grounded rotatably on the vehicle floor surface 20a. Thus, the center seat 12 can be removed from the vehicle floor 20. In other words, in addition to the movement of the center seat 12, it is possible to remove the center seat from the car floor 20 and remove the center seat from the vehicle body, so that the seat arrangement can be diversified.
According to the present invention, it is possible to sufficiently secure it.

Further, according to the present invention, the lock member 24 is arranged at one substantially central portion in the effective plane area of the seat base 14, and, for example, at four corners of the effective plane area.
Since it suffices to provide casters 26 that can be moved up and down and are urged downward, a movable center seat 12 that can be moved and detached can be easily secured without complicating the structure.

The lock member 24 is the seat base 14
The striker 40 to be locked by the lock member 24 and the floor body recessed portion 38 in which the striker is disposed are disposed only at one central portion in the effective plane area of the striker.
Center space for front seat and second seat
It will be enough if it is installed in each of 28C and 30C. That is, according to the present invention, the number of the recessed portions 38 of the vehicle floor 20 and the strikers 40 is sufficient. Therefore, also in this respect,
The vehicle floor structure can be sufficiently simplified.

Further, the number of the vehicle floor recesses 38 is minimal, and since there are no protrusions or the like on the vehicle floor surface 20a, the flatness of the vehicle floor surface is improved.

Further, in the present invention, the lock member 24
The rubber damper 54 that is pressed against the car floor 20 by the lock of
It is arranged at the four corners surrounding the lock member. That is, since the rubber damper 54 functions as a leg when the center seat is locked, the stability of the center seat 12 can be sufficiently ensured even if the lock member 24 is arranged at one place in the central portion.

Since the rubber damper 54 is pressed against the vehicle floor 20 by the lock of the lock member 24, the rattling of the center seat 12 at the time of locking is reliably prevented by its elasticity. Therefore, from this point as well, the center seat
The stability of 12 can be secured sufficiently high.

Further, in the present invention, the lock member 24
Since the seat base 14 is provided only at one central portion of the effective plane area defined by the seat base 14, the locking operation in the center spaces 28C and 30C of the front seat and the second seat is performed substantially at the central portion of the center seat 12. It is enough to push down. In other words, the locking operation is sufficient by pushing the center seat 12 in one cushion, so that the operability is surely improved.

Since the locking member 24 is located at one central portion of the effective plane area defined by the seat base 14, the locking can be performed without considering the forward / backward / left / right pushing balance with respect to the center seat 12. The operability is also improved in terms of points.

Here, in the embodiment of the present invention, the lock member 24 is arranged at one central portion in the effective plane area defined by the seat base 14, but this lock member is The number of positions is not limited to this, as long as one position is within the effective plane area of the seat base, and it is not limited to this. A lock member may be provided at one location such as a location close to the location.

However, as in the above-described embodiment of the present invention, the position where the lock member 24 is disposed is approximately one central portion common to the front and rear and the left and right within the effective plane area defined by the seat base 14. By doing so, it is possible to easily secure a lock with excellent holding balance.

Further, although the rubber damper 54 is provided in this embodiment, the present invention is not limited to this, and the rubber damper may be omitted.

In this embodiment, the four corners of the effective plane area defined in the seat base 14 are
Although the rubber damper 54 is arranged, the arrangement position of this rubber damper is sufficient as long as it is around the lock member 24, and therefore the present invention is not limited to this, and it is effective if it is at another position, for example, a position surrounding the lock member. The damper may be arranged at a position not including the four corners of the plane area, and if the stability of the center seat 12 can be maintained, the rubber damper may be provided at positions such as front, rear, left and right with respect to the lock member.

However, if the rubber damper 54 is provided and the rubber damper is provided at a portion including the four corners of the effective plane area defined in the seat base 14, the rubber damper 54 has a simple structure. High supportability and stability can be easily ensured.

Further, although the rubber damper 54 is embodied as a truncated cone shape, the rubber damper 54 has a height or a thickness which is pressed against the vehicle floor 20 by the locking of the locking member 24 with respect to the striker 40. To be enough
The shape of the rubber damper is not limited to this, and for example, another shape such as a substantially rectangular parallelepiped shape, a substantially arc shape, or a substantially annular shape,
This rubber damper may be formed.

Further, in this embodiment, the rubber damper 54 is embodied as a damper member, but the damper member is elastically deformable by being pressed against the vehicle floor 20 when the lock member 24 is locked to the striker 40. As long as the material is sufficient, the damper member is not limited to the rubber damper, and the damper member may be formed of, for example, a spring member such as a compression coil spring.

However, if the rubber damper 54 is used, its structure can be simplified, and since it can be easily attached to the seat base 14 by screwing or the like, its structure and workability are surely improved.

In the embodiment of the present invention,
The caster 26 that can be lifted and lowered by the rotation of the seat base
They are arranged at the four corners of 14 effective plane areas. However, the caster 26 can be raised against the spring force of the spring member 52 and can be lowered under the spring force of the spring member.
In other words, it is sufficient if the structure can be raised and lowered. For example, casters are provided at the front and rear positions of the left and right legs that are downwardly urged by the spring force of a predetermined spring member, and the casters are moved by raising and lowering the left and right legs. May be moved up and down between the upper and lower positions with respect to the lower end of the outer shape of the lock member 24.

In this embodiment, the lock release levers 58-f and 58-r are provided at the front portion and the rear portion of the seat base 14, respectively. Only one of the front or rear,
The lock release lever may be provided.

However, as in this embodiment,
Set the lock release levers 58-f, 58-r to the front of the seat base 14,
If they are provided in the rear portion, respectively, the lock releasing operation can be easily performed on both the front side and the rear side of the center seat 12, so that the operability can be ensured high regardless of the installation position of the center seat.

Further, in this embodiment, the seat row on which the center seat 12 is installed is embodied as two rows of the front seat 28 and the second seat 30, but the embodiment is not limited to this, and for example, the second seat, The center seat may be movable and installable between two rows of the third seat and three rows from the front seat to the third seat.

In the embodiment of the present invention,
Positioning recesses 74 that hypothetically lock the casters 26 in the aligned position of the locking member 24 with respect to the striker 40 are formed in the vehicle floor surface 20a.
However, the present invention is not limited to this, and the positioning recess may be omitted from the vehicle floor surface, for example. However, by providing the positioning recessed portion 74, it is possible to easily specify the alignment position of the lock member 24 with respect to the striker 40, so that the workability of arranging the center seat 12 and the improvement of reliability are sufficiently improved. And easily possible.

In the embodiment of the present invention described above, the seat back 18 is embodied as being fixedly connected to and supported by the seat base 14 together with the seat cushion 16. Not limited,
For example, the seat back can be attached to the seat back by using a hinge means such as a reclining device.
As shown by the alternate long and short dash line, a so-called forward movement may be possible.

Thus, if the seat back 18 can be tilted forward, not only does it function as a seat on which an occupant can sit, but also by tilting the seat back forward, the back of the seat back can be moved to the table, accessory case, armrest, or the like. Since it can also be used as, the usability of the movable center seat 12 can be sufficiently expanded.
Further diversification of the seat arrangement can be achieved.

Here, in the case where the seat back 18 can be tilted forward as described above, the lock release levers 58-f, 58-r are detected only when the forward tilt of the seat back is detected and when the forward tilt of the seat back is detected. It is preferable that the lock release operation can be performed by.

As shown in FIG. 1 and FIG. 11 which is a partially enlarged view of FIG. 1, in the movable center seat structure 10 of the present invention, the forward tilt detection means 76 for detecting the forward tilt of the seat back 18 is the seat. It is provided on the back, for example, at the hinge portion, that is, around the center of rotation.

The forward-movement detecting means 76 is an engagement pin that moves in an arc with the seat back 18 around a hinge point, for example, a hinge shaft 78 of a reclining device or the like.
80 and a receiving lever 82 which is formed with a part of an engaging piece 82a of the engaging pin which can be engaged and which is rotatable around a hinge shaft. The receiving lever 82 is provided around the hinge shaft (hinge point) 78 at a side position of the seat back 18, and is engageable with the engaging piece 82a of the receiving lever, and the engaging pin is provided on the side surface of the seat back. It is fixed and protruding.

In this forward-movement detecting means 76, as shown in FIG.
When the amount by which the seat back 18 is tilted forward from the upright position shown in (1) reaches a predetermined amount, the engagement pin 80 contacts and engages with the engagement piece 82a of the receiving lever. Then, when the seat back 18 is further rotated to a predetermined forward tilt position in the engaged state, the receiving lever 82 causes the hinge shaft 78 to move, as shown in FIG.
Rotate around by a corresponding amount.

In other words, according to this advance detection means 76,
The forward tilting of the seat back 18 is detected by the rotation of the receiving lever 82.

Further, as can be seen from FIG. 6 in addition to FIG. 4 (FIG. 1), the lock release levers 58-f, 58-r are provided with release preventing means 84. In the embodiment of the present invention, the base 58b of the lock release lever 58-f, 58-r,
Engaging pieces 86 are provided respectively. Further, the release preventing means 84 has a preventive lever 90 integrally having a preventive pin 88 capable of engaging with the locking piece 86 of the lock releasing lever base portion 58b.
And a return spring 92 for urging the blocking lever in the engagement direction of the blocking pin.

Like the lock release levers 58-f and 58-r, the release lever 90 of this release prevention means has a lever bracket 60.
Is unlocked under the spring force of a return spring 92, which is a tension coil spring stretched and stretched between the locking piece 60b of the lever bracket and the locking end 90a of the blocking lever. The blocking pin 88 is biased and held in the engagement direction with respect to the engagement piece 86 of the lever base.

As can be seen from FIGS. 1, 4, and 9, the blocking levers 90 provided on the front and rear lock release levers 58-f and 58-r are rotatably attached to the bracket 44, for example. At each end of the joint plate 94 that is axially attached,
The members are connected so as to be interlockable via connecting members, for example, connecting wires 96 and 97 having rigidity. Then, as shown in FIGS. 1, 4 and 11, a predetermined end of the joint plate 94 and a connecting piece 82b of the receiving lever 82 forming the forward tilt detection means 76 are connected via a connecting means such as the cable wire 100. By interlocking so as to be interlocked with each other, the blocking lever 90 can be rotated in conjunction with detection of the forward tilt of the seat back 18 by the forward tilt detection means.

In the upright position of the seat back 18 shown in FIG. 11, as shown in FIG. 4 (FIG. 1), the lock release levers 58-f, 58-r are formed by the engagement of the engagement pin 88 with the engagement piece 86.
The lock release operation cannot be performed by the lock release lever by preventing the rotation operation of the lock release lever. Therefore, the lock release does not occur in the upright state of the seat back.

Then, the seat back 18 is tilted forward, and as shown in FIG. 12, when the receiving lever 82 detects the seat tilting forward under its rotation, the cable wire 100 is pulled along with the rotation of the receiving lever. As a result, the blocking lever 90 of the release blocking means is rotated in the direction in which the blocking pin 88 is separated from the engaging piece 86 of the lock release lever base, as shown in FIG. By releasing the engagement between the lock release levers 58-f and 58-r, the blocking of the rotation operation is released.

As described above, according to the present invention, the lock release operation of the lock release levers 58-f and 58-r with respect to the lock member 24 can be performed only when the seat back 18 is tilted forward. In other words, the unexpected unlocking of the seat back 18 in the upright state can be reliably prevented even under the action of an external force on the unlocking levers 58-f, 58-r, and thus when the center seat 12 is used as a seat. In other words, the safety when the occupant is seated can be maintained higher.

Since it is sufficient to move or remove the center seat 12 while the seat back 18 is in the forward tilted state, the work is not hindered by the seat back. Therefore, the workability as well as the safety can be sufficiently improved by this configuration.

In the embodiment of the present invention,
Although the movable center seat mounted on a car such as a one-box car or a minivan is illustrated, the invention is not limited to this.
For example, the present invention may be applied to a movable center sheet such as a microbus or a truck.

The above-described embodiments are for explaining the present invention, and are not intended to limit the present invention in any way, and all modifications and alterations made within the technical scope of the present invention are also applicable to the present invention. Needless to say, it is included in the invention.

[0087]

As described above, according to the movable center seat structure for a vehicle according to the present invention, the center seat is moved in the vehicle front-rear direction by the rolling of the casters and is provided at one place. Under the lock by the locking member,
Since it is selectively and fixedly installed at a desired position, it is not necessary to use a rail body that becomes a long rail, let alone bury the rail body in the vehicle floor. Therefore, even in a vehicle equipped with a movable center seat, the vehicle floor structure can be simplified and the weight of the vehicle itself can be prevented from increasing.

When the lock member is unlocked, the caster is merely grounded on the vehicle floor surface so that it can roll freely. Therefore, according to the present invention, in addition to the movement in the vehicle front-rear direction, It is possible to remove the center seat from. That is, in addition to the movement of the center seat, the seat arrangement including the removal of the center seat from the vehicle floor and the removal of the center seat from the vehicle body is possible. Therefore, according to the present invention, the diversification of the seat arrangement is achieved. It becomes possible to secure enough.

Further, according to the present invention, it suffices to dispose the lock member at one position within the effective plane area of the seat base and dispose the caster urged downwardly on the seat base. A movable type center sheet that can be moved, detached, and attached can be easily secured without complicating its structure.

Since the lock member is arranged only at one place within the effective plane area of the seat base, the striker on the vehicle floor to which the lock member is locked is also provided at one place where the installation is desired. It's enough. Therefore,
Also in this respect, the vehicle floor structure can be sufficiently simplified, and the flatness of the vehicle floor surface can be improved.

Furthermore, since the lock member is provided only at any one position within the effective plane area of the seat base,
The locking operation at the desired position for disposition is sufficient by pushing the center seat downward. In other words, the lock operation is sufficient with only one cushion that pushes in the center seat, so that the operability is surely improved.

By disposing the lock member at one location substantially in the center of the effective plane area defined in the seat base, it is possible to easily secure a lock excellent in holding balance.

If a damper member that is pressed against the vehicle floor by the locking of the locking member is arranged around the locking member, this damper member functions as a leg of the center seat when the center seat is locked. Therefore, the stability of the center seat can be sufficiently ensured even if the lock member is provided only at one place.

Since the damper member is pressed against the vehicle floor by the lock of the lock member, the rattling of the center seat at the time of locking is reliably prevented by its elasticity. Therefore, also from this point, the stability of the center seat can be secured sufficiently high.

If the damper member is a rubber damper,
The structure can be simplified, and the seat base can be easily attached by screwing or the like, so that the structure and workability are surely improved.

If the damper member is arranged and fixed at a position including at least the four corners of the effective plane area defined in the seat base, the damper member is simple in construction,
The high supportability and stability can be easily ensured.

Further, if the positioning recesses for temporarily holding the casters at the aligning position of the lock member with respect to the striker are formed at the corresponding positions on the vehicle floor surface, the aligning position of the lock member with respect to the striker can be easily specified. ,
The workability and certainty of the work of disposing the center seat can be sufficiently and easily improved.

Further, lock release levers are provided at the front and rear positions of the seat base, and the front and rear lock release levers are connected to the lock members so as to be interlocked with each other, so that the front and rear sides of the center seat can be selectively operated. If the unlocking operation is possible, the unlocking operation can be easily performed on both the front side and the rear side of the center seat, so that the operability can be ensured high regardless of the installation position of the center seat.

The seat back can be moved forward,
Only when the forward tilt detection means detects the forward tilt of the seat back, if the lock release lever can be operated under the blocking release operation of the release blocking means interlocked with the forward tilt detection means, the seat back is in the upright state. Unintentional unlocking can be reliably prevented even under the action of external force on the unlocking lever, so that the safety can be maintained even higher when the center seat is used as a seat, that is, when the occupant is seated.

[Brief description of drawings]

FIG. 1 is a schematic vertical sectional view of a center seat when a seat is locked, showing a movable center seat structure of a vehicle according to the present invention.

FIG. 2 is a schematic seat layout diagram showing an installation example of a center seat.

FIG. 3 is a schematic seat layout diagram showing an installation example of a center seat.

FIG. 4 is a schematic partial enlarged view of FIG. 1, showing a movable center seat structure of the vehicle when the seat is locked.

FIG. 5 is a partially enlarged schematic cross-sectional view taken along the line AA of FIG. 1 showing the movable center seat structure of the vehicle when the seat is locked.

FIG. 6 is a schematic vertical cross-sectional view of the center seat when the seat lock is released, showing the movable center seat structure of the vehicle according to the present invention.

7 is a schematic partial enlarged view of FIG. 6 showing a movable center seat structure of the vehicle when the seat lock is released.

8 is a partially enlarged schematic cross-sectional view similar to FIG. 5, showing the movable center seat structure of the vehicle when the seat lock is released.

FIG. 9 is a schematic partially enlarged perspective view showing the movable center seat structure of the vehicle when the seat is locked.

FIG. 10 is a schematic sheet layout diagram showing an example of removing a center sheet.

FIG. 11 is a schematic partial enlarged view of FIG. 1, showing a movable center seat structure of the vehicle when the seat back is erected.

FIG. 12 is a schematic partial enlarged view similar to FIG. 11, showing the movable center seat structure of the vehicle when the seat back is tilted forward.

FIG. 13 is a schematic partial enlarged view similar to FIG. 4, showing the movable center seat structure of the vehicle when the blocking is released.

[Explanation of symbols]

10 Vehicle movable center seat structure 12 Center seat 14 seat base 18 seat back 20 car floor 24 Lock member 26 casters 40 striker 54 Damper member (rubber damper) 58-f, 58-r Lock release lever 74 Positioning recess 76 Forward-movement detection means 84 Release prevention means 100 cable wires (connecting means)

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Takenori Kiyose             Nissan, Takaracho, Kanagawa-ku, Yokohama-shi, Kanagawa Nissan             Inside the automobile corporation (72) Inventor Hiroyuki Kobayashi             Nissan, Takaracho, Kanagawa-ku, Yokohama-shi, Kanagawa Nissan             Inside the automobile corporation (72) Inventor Kaname Matsuo             Nissan, Takaracho, Kanagawa-ku, Yokohama-shi, Kanagawa Nissan             Inside the automobile corporation (72) Inventor Atsushi Kunizawa             3-12 Matsubara-cho, Akishima-shi, Tokyo Stocks             Company Tachi-S (72) Inventor Yoshio Arai             3-12 Matsubara-cho, Akishima-shi, Tokyo Stocks             Company Tachi-S F term (reference) 3B084 AA02 JA10 JC00                 3B087 BA19 BD01 CA11 CA16 CA19                       DE08 DE10                 3B099 AA05 BA04 DA04

Claims (9)

[Claims] 1. A center seat formed by assembling a seat cushion and a seat back to a seat base is movable between at least two front and rear seat rows, each center space defined between the left and right seats, and in each center space. It is a movable center seat structure of the vehicle that can be selectively installed, and a lock member that can be locked to the striker on the car floor,
A caster which is provided at any one position within an effective plane area defined in the seat base and is provided with a lock release lever for releasing the lock of the lock member, and is capable of moving up and down between upper and lower positions with respect to the lower end of the outer shape of the lock member. , The seat base is provided at least at the front and rear positions, respectively, and is biased and held at a lower position thereof under the spring force of a spring member, and the lock member unlocked by the operation of the lock release lever, The center of the caster is pushed up by the downward force of the caster by the spring force of the spring member to separate it from the striker, and the ground point of the caster after the lock member separates from the striker is set to the lock. The caster on the floor surface of the vehicle is positioned below the outer edge of the member. The movement of the center sheet enabling and movable mold center seat structure of a vehicle also the removal of the center seat from the vehicle floor by rolling the vehicle longitudinal direction. 2. The movable center seat structure for a vehicle according to claim 1, wherein the lock member is disposed at a substantially central portion of an effective plane area defined by the seat base. 3. The movable type of a vehicle according to claim 1, wherein a damper member capable of elastic compression deformation is arranged at a peripheral position of the lock member while being fixed to the seat base. Center seat structure. 4. The movable center seat structure for a vehicle according to claim 3, wherein the damper member is a rubber damper. 5. The movable center seat structure for a vehicle according to claim 3, wherein the damper member is arranged and fixed at a position including at least four corner portions of an effective plane area defined in the seat base. 6. The movable mold for a vehicle according to claim 1, wherein a positioning recess that hypothetically holds the caster at an alignment position of the lock member with respect to the striker is formed at a corresponding position on the vehicle floor surface. Center seat structure. 7. The lock release levers are respectively provided at front and rear positions of the seat base, and by connecting the front and rear lock release levers and the lock member so as to be interlocked with each other, a front side and a rear side of the center seat are provided. 7. A selective unlocking operation on the side is possible.
A movable center seat structure for a vehicle according to any one of the above. 8. The seat back is connected to the seat base so as to be tiltable forward through a predetermined hinge means,
The forward-movement detecting means is supported so as to be able to detect the forward-moving of the seat back, and the release preventing means interlocking with the forward-moving detecting means is provided so as to prevent the operation of the lock release lever. In the upright position of the seat back where the forward tilt of the seat back is not detected by the detection means,
The operation of the lock release lever is disabled under the operation prevention by the release prevention means, and the release operation interlocked with the forward operation detection means is performed only when the forward operation detection means detects the forward operation of the seat back. 8. The movable center seat structure for a vehicle according to claim 1, wherein the lock release lever can be operated under the blocking release operation of the blocking means. 9. An engagement pin integrally projecting on a side surface of the seat back, wherein the forward tilt detection means moves in an arc around the hinge point of the seat back integrally with the seat back, and the engagement pin. With an engaging piece that can be engaged,
A combination with a receiving lever rotatably arranged around the hinge point is provided, and the release blocking means can block operation of the lock release lever under engagement with the lock release lever. A blocking lever having a blocking pin, and a return spring for urging the blocking lever in an engaging direction of the blocking pin, the receiving lever of the forward tilt detection means, and the release blocking means of the release blocking means. The blocking lever and the blocking lever are linked so as to be interlockable by a predetermined linking means, and the blocking lever is rotated against the spring force of the return spring under the rotation of the receiving lever due to the arc movement of the engaging pin. 9. The movable center seat structure for a vehicle according to claim 8, wherein when the lock release lever is moved, the blocking operation of the lock release lever is released by separating the lock release lever from the lock release lever.