JP5326523B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicular seat, and more particularly to a vehicular seat that is disposed on a vehicle floor with an obstacle via a link mechanism.

In this type of vehicle, a stepped portion is often formed on the floor surface of the passenger compartment, and the floor surface (upper surface) on the rear side of the vehicle is made one step higher than the floor surface (lower surface) on the front side of the vehicle. The lower surface and the upper surface are connected by an inclined surface (rising surface). A vehicle seat and a wheel house (an example of an obstacle) are disposed on the upper rear surface of the vehicle.
And it is preferable to displace the vehicle seat disposed on the upper surface to a position where it protrudes to the vehicle one side (lower surface side) in consideration of the occupant's ease of use. There was something that got in the way.

Therefore, in the technique disclosed in Patent Document 1, a substantially rectangular wheel house (obstacle) is disposed on the side of the vehicle seat, and a substantially L-shape is provided on the floor of the passenger compartment so as to avoid the wheel house. A shaped slide rail is provided. The slide rail includes a first slide rail that moves the vehicle seat forward and a second slide rail that moves the vehicle seat laterally. The vehicle seat can be moved in the vehicle compartment while avoiding the wheel house by the first slide rail and the second slide rail.
JP 2000-264109 A

However, in the above-described known technology, a plurality of slide rails (upper surface, lower surface and rising surface slide rails) are required to move the vehicle seat to a desired position, and the seat configuration is complicated.
Therefore, the slide rail (single) is disposed obliquely in the vicinity of the wheel house, and a part of the vehicle seat (seat configuration that interferes with an obstacle) is deleted. In this way, the number of slide rails can be reduced as much as possible. However, there is a concern that the performance of the vehicle seat and the design may be deteriorated due to the deletion of the seat configuration.
The present invention has been devised in view of the above-described points, and the problem to be solved by the present invention is that the position of the vehicle seat is displaced while avoiding obstacles on the vehicle floor surface with a simpler configuration. There is.

As means for solving the above-mentioned problems, the vehicle seat of the present invention is disposed on the vehicle compartment floor via a link mechanism. The vehicle floor has a lower step surface on one side of the vehicle, an upper step surface on the other side of the vehicle that is higher than the lower step surface, and obstacles arranged on the upper step surface.
Then, the vehicle seat is displaced between the other position where the vehicle seat is arranged on the upper surface and the one position where it protrudes to one side of the vehicle (lower surface side), but at this time, it is as simple as possible to avoid obstacles. However, it is desirable that the position can be displaced.

Therefore, in the present invention, the link mechanism connects the vehicle seat and the lower surface to the link arm, and connects the vehicle floor (upper surface or rising surface) and the vehicle seat located higher than the lower surface. The other link arm is provided. The rotational radius of one link arm was set larger than the rotational radius of the other link arm.
And whereas the coordination rotation of the link arm and the other link arm, a vehicle seat a side facing the vehicle one side, the vehicle one side or the vehicle the other side in a state than the vehicle seat other side facing the vehicle other side is disposed below (Displacement operation). Then, the height position on the other side of the vehicle seat is made to correspond to the height position on one side of the vehicle seat (positioning operation) by the tilting operation due to the further rotation of the other link arm. And it is set as the structure which displaces between the other position arrange | positioned on an upper stage surface, and the one position which protrudes on the vehicle one side by these both operation | movement.

In the present invention, the one link arm and the other link arm are arranged to be inclined with respect to the vehicle seat. When the vehicle seat during the displacement operation is displaced between one position and the other position while straddling the obstacle diagonally, the vehicle seat is positioned in a displacement locus that interferes with the obstacle in the top view of the vehicle. It was set as the structure displaced.
Thus, in the present invention, the position of the vehicle seat is displaced while avoiding obstacles on the vehicle floor surface by utilizing the rotation of the link mechanism having a relatively simple configuration.

  According to the present invention, the position of the vehicle seat can be displaced while avoiding obstacles on the vehicle floor surface with a simpler configuration.

The best mode for carrying out the present invention will be described below with reference to FIGS. In each figure, a reference symbol F is appropriately attached to the front of the vehicle seat, and a reference symbol B is appropriately attached to the rear of the vehicle seat. In FIG. 2, the wheel house is omitted for convenience.
Referring to FIG. 1, a stepped portion is formed on the passenger compartment floor surface of the present embodiment, and the floor surface on the vehicle rear side (upper surface UP) is one step higher than the floor surface on the vehicle front side (lower surface DP). It is high.

A plurality of striker parts (first striker part 32, second striker part 34) are arranged in parallel on the front and rear of the lower stage surface DP (detailed arrangement positions of each striker part will be described later). . These striker parts are all rod-shaped members (circular cross-sections), and are arranged in the concave parts (D1, D2) formed on the lower surface DP.
On the upper surface UP, a plurality of catch portions (first catch portion 36, second catch portion 38) are provided in the front and rear of the vehicle when the rear link arm 26 is tilted backward (details will be described later) due to the displacement operation to the rear position. Arranged in parallel. Each of these catch portions is a rod-like member (circular cross section), and is disposed in a concave portion (D3, D4) formed on the upper stage surface UP at the time of rearward positioning.

(Obstacle)
A substantially rectangular wheel house H (an example of an obstacle) is disposed on the upper surface UP with reference to FIGS. 1 and 5. The wheel house H is disposed on the side of a vehicle seat 2 described later, and has a height dimension slightly higher than the seat 2 (height dimension h).
The wheel house H is formed with a notched tapered surface (side tapered surface LT, front tapered surface FT) (see FIG. 5). And these taper surfaces have the shape (inclination angle) corresponding to the displacement locus | trajectory at the time of the displacement operation | movement of the vehicle seat 2 so that it may mention later.

[Example 1]
The vehicle seat 2 includes a seat cushion 4 and a seat back 6 with reference to FIG. A lock portion 8 is provided on the rear side of the lower portion of the seat cushion 4. The lower portion of the lock portion 8 is formed in a concave shape, and the rod-like second catch portion 38 or the first catch portion 36 is engaged in a fitting manner.
A hook portion 10 is provided at the front end of the lower portion of the seat cushion 4. Below the hook portion 10 is a claw shape that can be engaged with each striker portion (bar shape).

In this embodiment, the hook portion 10 is extended from the front end of the lower portion of the seat cushion 4 toward the vehicle compartment floor (extended length dimension E1). When the vehicle seat 2 is substantially horizontal (front position or rear position), the tip of the hook portion 10 is inclined from the front end of the seat cushion 4 toward the front side of the vehicle.
Further, when the vehicle seat 2 is inclined downward (when the vehicle seat 2 is displaced), the tip of the hook portion 10 is inclined toward the vehicle rear side. Then, by a positioning operation described later, the tip of the hook portion 10 is configured to draw a rotation locus having a radius E1 with the front end of the seat cushion 4 as the rotation center (C1) (see the broken line T1 in FIGS. 2 and 3).

(Location of striker section)
In the present embodiment, the first striker portion 32 is disposed in the concave portion D1 on the front side of the lower surface DP. At this time, the first striker portion 32 is provided in the middle of the rotation locus of the hook portion 10 at the front position (see the broken line T1 in FIG. 4).
Further, the second striker portion 34 is disposed in the concave portion D2 on the rear side of the lower step surface DP (near the step portion). At this time, the second striker portion 34 is provided in the middle of the rotation locus of the hook portion 10 at the rear position (see the broken line T1 in FIG. 2).

The vehicle seat 2 of the present embodiment is disposed at the step portion via a link mechanism L (details will be described later) (see FIGS. 1 and 4). The vehicle seat 2 is displaced between the rear position and the front position by the link mechanism L while avoiding the wheel house H on the upper surface UP. It is desirable that this type of configuration be as simple as possible. .
Therefore, in this embodiment, the position of the vehicle seat 2 is displaced while avoiding the wheel house H with a relatively simple configuration (link mechanism L). Hereinafter, each configuration will be described in detail.

(Link mechanism)
The link mechanism L includes a pair of front link arms 20f and 20b (an example of one link arm) and a rear link arm 26 (an example of the other link arm) (see FIGS. 1 and 2). The arrangement positions of these link arms 20f (20b) and 26 will be described later.
Each of the pair of front link arms 20f and 20b is an L-shaped (side view) flat plate member, and has an upper arm 22 and a lower arm 24 (for the sake of convenience, detailed reference numerals are given only to 20f). The upper arm 22 is rotatably supported on the front end portion of the seat cushion 4. Further, the lower arm 24 is pivotally supported on the bracket B of the lower step surface DP so as to be tiltable, whereby the front link arms 20f and 20b are disposed on both sides of the front side of the seat cushion 4.
The pair of front link arms 20f and 20b are configured to rotate forward and backward with the bracket B of the lower step surface DP as the rotation center (C3) when the position is displaced. At this time, the rotation radius E3 of the front link arm f (20b) is set to be larger than the rotation radius E2 of the rear link arm 26 to draw a relatively gentle rotation locus (see the broken line T3 in FIG. 2). .

The rear link arm 26 is an I-shaped (side view) flat plate member. The upper end of the rear link arm 26 is pivotally supported on the central portion (bracket B) below the seat cushion 4 so as to be rotatable. Further, the rear link arm 26 is disposed at the center of the seat cushion 4 by pivotally supporting the lower end of the rear link arm 26 on the bracket B of the upper surface UP so as to be tilted.
The rear link arm 26 is configured to tilt and rotate forward and backward with the bracket B on the upper surface UP as the center of rotation (C2) when the position displacement described later is performed (see the broken line T2 in FIG. 2).

In this embodiment, the rear link arm 26 rotates on the upper surface UP, and therefore rotates at a position higher than the front link arm f (20b) of the lower surface DP described later.
For this reason, at the time of a displacement operation described later, the rear side of the vehicle seat 2 supported by the rear link arm 26 is disposed above the front side of the vehicle seat 2 supported by the front link arm f (20b) (FIG. 2). And FIG. 3).
That is, in this embodiment, the lower part (lock portion 8) of the seat cushion 4 is moved up and down by the cooperative rotation of both the link arms 20f (20b) and 26 (see the broken line T4 in FIG. 3). More specifically, the lock portion 8 at the rear position is displaced upward by the alignment operation (height position a). Furthermore, the lock portion 8 is moved to an upper position (position b) by a displacement operation, and ascends to a height position exceeding the wheel house H (height dimension h). And after the lock | rock part 8 moves to the front side, exceeding the wheel house H (position bc), it becomes lower than the wheel house H near the lower stage surface DP (position ef). Then, it is displaced to the front position by the alignment operation described later.

(Link arm position)
Therefore, in the present invention, both the above-described link arms f (20b) and 26 are disposed in an inclined manner with respect to the seat cushion 4 (inclination angle θ in FIG. 5). In this way, the vehicle seat 2 is displaced between the upper surface UP and the lower surface DP with the seating surface facing forward.
In the present embodiment, the vehicle seat 2 in the rear position is disposed on the side of the wheel house H (the side facing the side tapered surface LT). Further, the vehicle seat 2 in the forward position is disposed on the front side of the wheel house H (the side facing the front tapered surface FT). At this time, the vehicle seat 2 is arranged such that a line connecting the rear portion of the vehicle seat at the rear position (lock portion 8) and the rear portion of the vehicle seat at the front position (lock portion 8) crosses the wheel house H. More specifically, when the lock portion 8 is at a height position exceeding the portion of the wheel house H (positions b to d), the vehicle seat 2 is disposed so as to cross the wheel house H excluding both tapered surfaces.

(Displacement to the front position)
Then, the vehicle seat 2 is displaced to the front position (one position) (see FIGS. 3 and 4).
At this time, the link arm f (20b), 26 is linked to the front side of the vehicle, and the front side of the vehicle seat 2 is placed below the rear side of the vehicle seat 2 and moves to the front side of the vehicle (displacement operation). ). Then, at the front position, the rear link arm 26 is tilted forward, and the height position on the rear side of the vehicle seat 2 is adjusted to the height position on the front side of the vehicle seat 2 (positioning operation). By doing so, the vehicle seat 2 becomes substantially horizontal and is displaced to the front position protruding toward the lower surface DP.

  The hook portion 10 moves to the front of the vehicle by the linked rotation of both link arms f (20b) and 26 during the displacement operation. The hook portion 10 is engaged with the first striker portion 32 relatively smoothly by forwardly tilting the rear link arm 26 during the alignment operation (rotation in the same direction as during the displacement operation) (see the broken line T1 in FIG. 3). ).

3 and FIG. 5, the above-described lock portion 8 moves upward by the alignment operation (position a), and further moves upward by the displacement operation (position b). At this time, the lock portion 8 from the position a to b is displaced along the side tapered surface LT (notch shape) of the wheel house H. And the lock | rock part 8 displaces a position, straddling the wheel house H, with the height position exceeding the wheel house H (positions b-c-d).
Then, after the vehicle seat 2 gets over the wheel house H (after being disposed at the front position), the lock portion 8 becomes lower than the wheel house H near the lower stage surface DP (positions ef). Then, the vehicle seat 2 at the front position can be fixed by engaging the lock portion 8 with the first catch portion 36 of the rear link arm 26 disposed on the upper surface UP by the alignment operation.

(Displacement to the rear position)
Then, the link release lever is operated to rotate the link mechanism L to displace the vehicle seat 2 to the rear position (the other position) (see FIGS. 1 and 2).
At this time, the front side of the vehicle seat 2 is placed below the rear side of the vehicle seat 2 by the cooperative rotation of the front link arm f (20b) and the rear link arm 26 toward the rear side of the vehicle, and the rear side of the vehicle Move (displacement operation). Then, at the rear position, the rear link arm 26 is tilted backward to align the height position of the rear side of the vehicle seat 2 with the height position of the front side of the vehicle seat 2 (positioning operation). By doing so, the vehicle seat 2 becomes substantially horizontal and is displaced to the rear position on the upper surface UP.

  The hook portion 10 moves rearward by the associated rotation of the link arms f (20b) and 26 during the displacement operation, and once passes over the second striker portion 34. Then, the hook portion 10 engages with the second striker portion 34 while returning backward by the backward link arm 26 being rotated backward (rotation in the direction opposite to that during the displacement operation) during the alignment operation (see the broken line T1 in FIG. 2). ).

3 and FIG. 5, the above-described lock portion 8 moves upward by the alignment operation (position f), and further moves upward by the displacement operation (position e). At this time, the lock portion 8 up to positions f to e is displaced along the front tapered surface FT (notch shape) of the wheel house H. And the lock | rock part 8 displaces a position, straddling the wheel house H, with the height position exceeding the wheel house H (position dc).
Then, after the vehicle seat 2 gets over the wheel house H (after being disposed at the rear position), the lock portion 8 becomes lower than the wheel house H (positions b to a). Then, the vehicle seat 2 in the rear position can be fixed to the upper step surface UP by engaging the lock portion 8 with the second catch portion 38 of the upper step surface UP by the alignment operation.

Thus, in this embodiment, the position of the vehicle seat 2 can be displaced while avoiding obstacles on the vehicle floor surface by utilizing the rotation of the link mechanism L (a relatively simple configuration).
In this embodiment, the side taper surface LT and the front taper surface FT are provided on the upper portion of the wheel house H. These tapered surfaces improve the design of the wheel house H.
Further, the side tapered surface LT has a shape corresponding to the displacement locus of the vehicle seat 2 (the movement locus to the positions a to b of the lock portion 8), thereby ensuring the maximum volume of the wheel house H, The vehicle seat 2 can be displaced to the front position with the shortest distance. And by making the front taper surface FT a shape corresponding to the displacement locus of the vehicle seat 2 (movement locus to the positions f to e of the lock portion 8), while ensuring the maximum volume of the wheel house H, The vehicle seat 2 can be displaced to the rear position at the shortest distance.

Further, in the present embodiment, the rearward link arm 26 in the forwardly tilted state and the rearward link arm 26 in the backwardly tilted state are arranged at the same position height (the rear link arm 26 rotates 180 ° on the upper stage surface). For this reason, the vehicle seat 2 in the front position and the vehicle seat 2 in the rear position are arranged at substantially the same height position.
Therefore, the vehicle seat 2 of the present embodiment can be used without causing the passenger to feel uncomfortable as much as possible at any position.

[Example 2]
Since the basic structure of the second embodiment is almost the same as that of the first embodiment, the detailed description is omitted by giving the corresponding reference numerals to the common structures and the like.
In the present embodiment, an example will be described in which the vehicle seat 2 at the front position is disposed below the vehicle seat 2 at the rear position (see FIG. 5). In the present embodiment, the second striker portion 34 is provided on the middle step surface that is one step higher than the lower step surface DP.
Further, the first catch portion 36 is welded and fixed as a bridge between the pair of rear link arms 26a (fixed at two welding points). More specifically, the first catch portion 36 is fixed to the overhanging portion E (the portion overhanging to the lower surface DP side) of the rear link arm 26a in the forward-turned state.

The rear link arm 26a of the present embodiment is substantially L-shaped (side view) corresponding to the shape of the passenger compartment floor, and its upper part is linear and its lower part is bent.
The upper portion (straight portion) of the rear link arm 26a is pivotally supported on the central portion (bracket B) below the seat cushion 4. Further, the lower portion (bent portion) of the rear link arm 26a is pivotally supported by the bracket B of the rising surface RP so as to be tiltable (rotatable).
The vehicle seat 2 in the rear position is disposed on the upper surface UP. At this time, the upper part (straight line part) of the rear link arm 26a is tilted back onto the upper surface UP.

(Position displacement)
Then, the vehicle seat 2 is displaced to the front position (see the broken line state in FIG. 5).
At this time, after the rear link arm 26a (substantially L-shaped) is tilted forward to the front side of the vehicle around the bracket B of the rising surface RP, the vehicle seat 2 is made substantially horizontal. As described above, in the present embodiment, the rear link arm 26a is brought forward in the bracket B of the rising surface RP (below the upper stage surface UP), and thus is substantially horizontal at a position below the upper stage surface UP.
For this reason, in this embodiment, the vehicle interior space can be effectively used in the front-rear and up-down directions by making the height positions of the vehicle seat 2 at the front position different from the height position of the vehicle seat 2 at the rear position.

[Modification]
The first catch portion 36 described above may be arranged on the rising surface RP of the step portion. Then, the locking portion 8 of the seat cushion 4 is engaged with the first catch portion 36 of the rising surface RP by the displacement operation to the front position.

The vehicle seat according to the present embodiment is not limited to the above-described embodiment, and can take other various embodiments.
(1) In this embodiment, the lower step surface DP is formed on the front side of the vehicle and the upper step surface UP is formed on the rear side of the vehicle. However, this is not intended to limit the shape of the vehicle floor surface. That is, the upper step surface UP may be formed on the front side of the vehicle, and the lower step surface DP may be formed on the rear side of the vehicle. Further, the upper step surface UP may be formed on the left side of the vehicle, and the lower step surface DP may be formed on the right side of the vehicle.
In this embodiment, the vehicle seat is arranged so that the seating side faces the front, but the direction of the vehicle seat is not particularly limited. That is, the vehicle seat may be arranged so that the seating side faces the rear or side.
(2) Moreover, in the Example, the wheel house H was illustrated as an example of an obstruction. The configuration of the present embodiment is a technique that can also be applied when overcoming various obstacles (for example, other vehicle seats, storage units, etc.) disposed on the upper surface.

(3) In the first embodiment, the configuration in which one pair of front link arms and one rear link arm are provided has been described. However, the number of these link arms is not limited. That is, the front link arm may be singular or two or more. Similarly, the rear link arm may be singular or plural.
Since the rear link arm is a member exclusively for displacing the vehicle seat, for example, a configuration in which only one rear link arm is provided at the center portion of the seat cushion (a simpler configuration) may be employed. Moreover, since the front link arm is also a member that supports the vehicle seat, a configuration in which a plurality of the front link arms are provided on the seat cushion is preferable.

(4) In the present embodiment, the configuration (compact configuration) in which the lower arm 24 of the front link arm 20f (20b) is housed in the concave portion D2 at the rear position has been described. Unlike this, the front link arm (lower arm) may be arranged on the lower step surface DP.
Similarly, the rear link arm 26 may be housed in the concave portion D3 or may be disposed on the upper surface.

(5) Moreover, in the present Example, the catch part, the lock part, the hook part, and the striker part were illustrated as a structure for fixing the vehicle seat 2. In addition, various configurations can be adopted as long as the vehicle seat 2 can be fixed.
(6) Moreover, the vehicle seat 2 of the present embodiment can be provided with a slide mechanism. The vehicle seat 2 at each position can be slid back and forth by the slide mechanism.

(7) The technique of the present embodiment can also be applied to a vehicle seat arranged on a passenger compartment floor (for example, a flat passenger compartment floor) without a stepped portion. In this case, a vehicle seat having the following configuration is desirable.
(A) It is arrange | positioned through the link mechanism in the compartment floor surface which has an obstruction.
(B) A link arm that connects the vehicle seat and the passenger compartment floor surface is provided in the link mechanism.
(C) By performing a displacement operation for moving the vehicle seat to one side or the other side by the rotation of the link arm, the other position where the vehicle seat is disposed at the side position of the obstacle, Displace between one position placed at another side position.
(D) The link arm is arranged to be inclined with respect to the vehicle seat, and the vehicle seat during the displacement operation is displaced between one position and the other position while straddling an obstacle diagonally.

It is a side view of the vehicle seat of a rear position. It is a side view of the vehicle seat in the middle of the displacement to the rear side. It is a side view of the vehicle seat in the middle of the displacement to the front side. It is a side view of the vehicle seat of a front position. It is an upper front view of a vehicle seat. It is a side view of the vehicle seat of Example 2.

2 Vehicle seat 4 Seat cushion 6 Seat back 8 Lock portion 10 Hook portion 20f, 20b Front link arm 22 Upper arm 24 Lower arm 26 Rear link arm 32 First striker portion 34 Second striker portion 36 First catch portion 38 Second Catch part L Link mechanism DP Lower surface UP Upper surface H Wheel house RP Rising surface FT Front taper surface LT Side taper surface

Claims (1)

A vehicle disposed via a link mechanism on a lower step surface on one side of the vehicle, an upper step surface on the other side of the vehicle that is higher than the lower step surface, and a passenger compartment floor surface having an obstacle disposed on the upper step surface. In the sheet for
The link mechanism is provided with one link arm that connects the vehicle seat and the lower step surface, and a vehicle interior floor surface that is higher than the lower step surface and the other link arm that connects the vehicle seat, The rotation radius of the one link arm is set larger than the rotation radius of the other link arm,
The linkage rotation of the one link arm the other link arm, a vehicle seat a side facing the vehicle one side, the vehicle one side in a state arranged below the vehicle seat other side facing the vehicle other side Or the position which makes the height position of the other side of the vehicle seat correspond to the height position of the other side of the vehicle seat by the displacement operation to move to the other side of the vehicle and the tilting operation by further rotation of the other link arm by performing the combined operation, the vehicle seat, and the other position to place the lateral position of the obstacle on the upper face, another lateral position of the obstacle out Ri Zhang said vehicle one side It is configured to displace between one position placed in
The one link arm and the other link arm are arranged to be inclined with respect to the vehicle seat, and the vehicle seat at the time of the displacement operation is straddling the obstacle, and the one position and the other position. When the vehicle is displaced between the vehicle seats, the vehicle seat is configured such that the vehicle seat is displaced in position along a displacement trajectory that interferes with the obstacle in a top view of the vehicle.

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