JP5326524B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat, and more particularly to a vehicle seat disposed on a vehicle compartment floor via a link mechanism.

As this type of vehicle seat, a vehicle seat disposed in a stepped portion of a passenger compartment floor surface is known (see Patent Document 1).
In this known technique, 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 by the step portion on the floor surface of the passenger compartment. A plurality of catch portions (members for fixing the vehicle seat) are provided in parallel on the front and rear sides of the upper surface.

The vehicle seat includes a lock portion that can be engaged with the catch portion described above, a slide rail, and a link arm. The lock portion is disposed below the vehicle seat, and the slide rail is disposed on the lower surface.
One end of the link arm is rotatably arranged on the front side of the vehicle seat, and the other end of the link arm is slidably supported on the slide rail on the lower step surface via a sliding member. Yes. The slide rail is provided with a plurality of lock positions for locking the slide member, and the slide member can be stopped at each lock position.

And a vehicle seat is arrange | positioned in a level | step-difference part, and the lock part of the vehicle seat lower part is engaged with the 1st catch part of the upper stage surface of a vehicle rear side. Further, by stopping the sliding member at the lock position on the rear side of the slide rail, the vehicle seat can be fixed on the upper surface (held at the rear position).
Further, the lock portion at the lower part of the vehicle seat is engaged with the second catch portion on the front side of the vehicle while the vehicle seat is displaced to the front side by the rotation operation of the link arm to the front side. Furthermore, by stopping the sliding member at the lock position on the front side of the slide rail, the vehicle seat can be fixed by being protruded from the step portion to the vehicle front side (held at the front position).
JP 2000-108744 A

However, in the above-described known technology, there are a relatively large number of members for holding the vehicle seat at each position, and considering the increase in weight and cost of the vehicle seat, the configuration is not easily adopted. Further, in the known technique, a plurality of members (for example, slide rails and link arms) are complicatedly arranged on the lower surface, and these members may interfere with the raising and lowering of the occupant (particularly at the rear position).
The present invention has been devised in view of the above points, and a problem to be solved by the present invention is to perform position displacement of a vehicle seat with a simpler and more compact configuration.

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 compartment floor has a lower step surface on one side of the vehicle, an upper step surface on the other side of the vehicle higher than the lower step surface, and a rising surface that connects the lower step surface and 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 the vehicle seat projects to one side (the lower surface), but this type of configuration is preferably as compact as possible. .

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 has a shape corresponding to the surface shape of the passenger compartment floor. And it was set as the structure which arrange | positions one link arm along a vehicle compartment floor surface by the displacement operation | movement to the other position.
Further, in the present invention, the other link arm is tilted to one side of the vehicle by a displacement operation to one position, and the lock portion provided at the lower portion of the vehicle seat is engaged with the catch portion provided on the other link arm. did.
As described above, in the present invention, a link mechanism having a relatively simple configuration is used, and the link arm at the other position can be compactly arranged by utilizing the rotation of the link mechanism.

  According to the present invention, the position of the vehicle seat can be displaced with a simpler and more compact 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.
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.
The upper surface UP and the lower surface DP are connected by a rising surface RP. The rising surface RP is an inclined surface that linearly inclines from the lower surface DP to the upper surface UP (rising angle θ1).

  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. The concave portion D1 on the front side of the vehicle has a substantially rectangular shape (viewed in a longitudinal section), and the concave portion D2 on the rear side has a rectangular shape.

  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. The concave portion D3 on the front side of the vehicle has a rectangular shape (in longitudinal sectional view), and the concave portion D4 on the rear side has a substantially rectangular shape.

[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 part of this lock part 8 is made into the concave shape, and each catch part (bar shape) is the structure engaged in a fitting shape.
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. 3).
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. It is desirable that this type of configuration be as simple and compact as possible.
Therefore, in this embodiment, the position of the vehicle seat 2 is displaced by a relatively simple and compact 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 20 (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 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).
Then, the rearward link arm 26 in the rearward state is housed and disposed in the concave portion D3. For this reason, while the depth dimension of the recessed part D3 is set more than the width dimension of the rear link arm 26, the length dimension of the recessed part D3 is set more than the length dimension of the rear link arm 26.

  In the present embodiment, the rear link arm 26 rotates on the upper surface UP, and therefore rotates at a position higher than the front link arm 20 of the lower surface DP described later. For this reason, at the time of the 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 20.

(Front link arm)
The pair of front link arms 20 are both L-shaped (side view) flat plate members, and have an upper arm 22 and a lower arm 24 (both arms are connected at a bending angle θ2). 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 arm 20 is disposed on both sides of the front side of the seat cushion 4.
The pair of front link arms 20 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 20 is set 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).

In this embodiment, the lower arm 24 is tilted back to the lower surface DP at the rear position described later, and is housed and disposed in the concave portion D2. For this reason, the depth dimension of the recessed part D2 is set to be equal to or larger than the width dimension of the lower arm 24, and the length dimension of the recessed part D2 is set to be larger than the length dimension of the lower arm 24.
The upper arm 22 stands up slightly inclined from the rear end of the lower arm 24. At this time, the rising angle θ3 with respect to the lower step surface DP (lower arm 24) is set to be the same as the inclination angle θ1 of the rising surface RP by appropriately adjusting the bending angle θ2.

(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, by the cooperative rotation of the front link arm 20 and the rear link arm 26 to the rear side of the vehicle, the front side of the vehicle seat 2 is placed below the rear side of the vehicle seat 2 and moves to the rear side of the vehicle ( Displacement motion). 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 20 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). ).
Further, the locking portion 8 can also be engaged with the second catch portion 38 of the upper step surface UP by the alignment operation, so that the vehicle seat 2 in the rear position can be fixed to the upper step surface UP.

And the front link arm 20 is arrange | positioned along a vehicle compartment floor surface by the above-mentioned displacement operation | movement. That is, the lower arm 24 in the rearward state is housed in the concave portion D2, and the upper arm 22 is raised slightly inclined from the rear end of the lower arm 24. At this time, the upper arm 22 is tilted rearward along the rising surface RP of the stepped portion (maintaining a constant clearance C). (The rising angle θ3 of the upper arm 22 = the inclination angle θ1 of the rising surface RP).
Further, the rearward link arm 26 in the rearward state is accommodated in the concave portion D3 by the alignment operation. For this reason, in the present embodiment, both link arms 20 and 26 at the rear position can be compactly arranged along the vehicle compartment floor surface by the rotation operation of the link mechanism L.

(Displacement to the front position)
Next, the vehicle seat 2 is displaced to the front position (one position) (see FIGS. 3 and 4).
At this time, by the cooperative rotation of the link arms 20 and 26 toward the front side of the vehicle, 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 associated rotation of the link arms 20 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). ).
Further, the locking portion 8 is also engaged with the first catch portion 36 of the rear link arm 26 disposed on the upper step surface UP by the positioning operation, thereby fixing the vehicle seat 2 at the front position in a protruding manner from the step portion. Can do.

And by the above-mentioned displacement operation, the lower arm 24 rises from the concave portion D2, and the upper arm 22 is disposed substantially horizontally below the seat cushion 4. Since the front end of the upper arm 22 is fixed to the front end of the seat cushion 4, it does not protrude from the front end of the seat.
Further, the rear link arm 26 is brought forward by the alignment operation and is disposed below the seat cushion 4. For this reason, in the present embodiment, both the link arms 20 and 26 are compactly arranged below the seat cushion 4 by the rotation operation of the link mechanism L.

Thus, in this embodiment, the link arms 20 and 26 at each position are arranged relatively compactly by utilizing the rotation of the link mechanism L (relatively simple configuration). In the rear position, the front link arm 20 is compactly arranged along the vehicle compartment floor surface (the lower step surface DP and the rising surface RP) so as not to disturb ascending / descending of the occupant as much as possible.
Therefore, according to the present embodiment, the position of the vehicle seat can be displaced with a simpler and more compact configuration.

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.

[Modification]
Further, the front link arm 20 can take not only the above-described shape but also various other shapes.
For example, in FIG. 5A, the front link arm 20a is substantially Z-shaped, and has a lower arm 24 and an upper arm 22a. The upper arm 22 a is bent at the upper end and is pivotally supported by the seat cushion 4.
Further, in FIG. 5B, the front link arm 20b has a substantially inverted L shape, and the lower arm 24b is arranged linearly along the rising surface RP immediately from the stepped portion. The upper arm 22b is disposed along the upper surface UP and is pivotally supported by the seat cushion 4.
The front link arms 20a and 20b having the above-described shapes can be compactly arranged along the vehicle compartment floor surface (any one of the lower step surface DP, the rising surface RP, and the upper step surface UP) at the rear 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 in the front position is disposed below the vehicle seat 2 in the rear position (see FIG. 6). 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 surface shape of the passenger compartment floor surface, and the upper part is linear and the 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. In the rear position, the front link arm 20 is compactly arranged along the passenger compartment floor surface (the rising surface RP and the upper surface UP) so as not to disturb the raising and lowering of the occupant as much as possible.

(Position displacement)
Then, the vehicle seat 2 is displaced to the front position (see the broken line state in FIG. 6).
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 linear standing surface RP was illustrated. In addition, curved rising surfaces and rising surfaces having various shapes such as steps, zigzags, S shapes, and Z shapes can be formed. Also in this case, the effect of the present embodiment can be achieved by making the shape of the one link arm correspond to the rising surface or the like.
(3) In the first embodiment, the rising angle θ3 of the upper arm 22 and the inclination angle θ1 of the rising surface RP are set to be the same. If the upper arm 22 is inclined downward, the upper arm 22 is inclined backward and rises along the rising surface RP of the stepped portion. Therefore, it is not necessary to set the rising angle θ3 of the upper arm 22 and the inclination angle θ1 of the rising surface RP exactly the same (clearance C is strictly constant). Further, the front link arm and the vehicle compartment floor may be brought into contact with each other (a configuration in which no clearance is provided).
In the second embodiment, the front link arm and the vehicle compartment floor surface are brought into contact with each other. However, an appropriate clearance may be provided between the two members.

(4) In the first embodiment, a configuration in which a pair of front link arms 20 and a single rear link arm 26 are provided has been described. However, the number of link arms is not limited. That is, the front link arm 20 may be singular or may be two or more. Similarly, the rear link arm 26 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.

(5) In the present embodiment, the configuration (compact configuration) in which the front link arm 20 (lower arm 24) is housed in the concave portion D2 at the rear position has been described. Unlike this, the front link arm 20 (lower arm 24) 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.

(6) 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.
(7) The vehicle seat 2 of the present embodiment can also be provided with a slide mechanism. The vehicle seat 2 at each position can be slid back and forth by the slide mechanism.

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 a side view of the vehicle seat of another example. 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 20 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 portion B Bracket L Link mechanism DP Lower surface RP Rising surface UP Upper surface

Claims (1)

A vehicle disposed via a link mechanism on a lower floor surface on one side of the vehicle, an upper surface on the other side of the vehicle that is higher than the lower surface, and a floor surface that rises to connect the lower surface and the upper 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 the further rotation of the other link arm. by performing the combined operation, the vehicle seat, and the other position is placed on the upper surface, and configured to be displaced between one position out Ri Zhang said vehicle one side,
The one link arm is configured as a shape corresponding to the surface shape of the vehicle compartment floor surface, and is arranged along the vehicle compartment floor surface by a displacement operation to the other position,
The other link arm is tilted to one side of the vehicle by a displacement operation to the one position, and a lock portion provided at a lower portion of the vehicle seat is engaged with a catch portion provided on the other link arm. Vehicle seat.

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