JP2003312324A - Seat device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve convenience in using a seat device for a vehicle by increasing the quantity of sliding of the seat. <P>SOLUTION: A slide rail mechanism X consists of a first slide rail mechanism X<SB>1</SB>fixed to a seat cushion 2A and a second slide rail mechanism X<SB>2</SB>fixed to the body floor surface G side. The first slide rail mechanism consists of a first upper rail 4 and a first lower rail 5, and the second slide rail mechanism consists of a second upper rail 6 and a second lower rail 7. The first lower rail 5 of the first slide rail mechanism X<SB>1</SB>and the second upper rail 6 of the second slide rail mechanism X<SB>2</SB>are integrally connected to each other. The slide rail mechanism X also has a lock release mechanism Y for releasing a lock mechanism on the second slide rail mechanism X<SB>2</SB>side by receiving the displacement of a seat back 2B when the seat back 2B is tilted forward at the front end position of sliding of the first slid rail mechanism X<SB>1</SB>. Accordingly, both the comfortable sitting feel by the operation of the first slide rail mechanism X<SB>1</SB>and the enlargement of the space in the rear of the seat by the operation of the second slide rail mechanism X<SB>2</SB>can be achieved. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat device.

[0002]

2. Description of the Related Art Generally, in a vehicle seat device, a slide mechanism is interposed between a seat and a floor surface of a vehicle body so that the seat can be slid forward and backward.

If the seat is slidable in the front-rear direction in this manner, (a) when the occupant is seated on the seat, the occupant selects an optimum seat position according to his / her physical constitution, a desired sitting posture, etc. (A) Focusing on the relationship between the seat and the seat immediately before it, for example, by sliding the seat immediately before to the front, it is possible to expand the space for one's feet and improve comfort. ) Especially, in the case of seats installed in van type or wagon type vehicles, the space behind the seats in the last row is used as a luggage compartment. In this case, slide the seats appropriately in the front-rear direction. so,
It is possible to easily secure an optimal size of the luggage compartment space corresponding to the conditions such as the shape and size of the luggage to be loaded, and it is possible to secure high convenience in using the seat.

[0004]

By the way, generally, a slide mechanism provided in a vehicle seat relatively slides an upper rail fixed to a seat cushion side and a lower rail fixed to a vehicle body floor side in a rail length direction. Although it is configured to be movable, the maximum slide amount of this slide mechanism is that the allowable length of each rail is restricted by the installation space (especially between the foot portion of the vehicle body floor and the seat fixing portion). It is remarkable when there is a difference in height), or the strength performance of the sliding mechanism is regulated by the overlap length of the upper rail and the lower rail in the maximum sliding state, etc. No, there is a limit.

Further, the original purpose of the seat is to seat the occupant. Therefore, whether the seat is a front seat or a rear seat, a sufficient space for the feet of the occupant seated on the seat is secured. Must have been
The frontmost position in the sliding direction of each sheet is the other sheet located immediately before it (for example, the first row sheet with respect to the second row sheet), or the object located immediately before that (for example,
It is relatively determined in relation to the vehicle seat side member such as the instrument panel located immediately before the front seat (first row seat), and this cannot be arbitrarily set.

For these reasons, in the conventional seat apparatus, due to its structure, even if the seat is moved to the slide front end position, a space remains between the seat and the seat immediately before it or the object just before. In addition, the structure is such that the seat cannot be moved further forward so as to narrow the remaining space.

However, in the actual use of the seat device, the seat is not used normally, that is, the seat is moved beyond the foremost end position during normal use and moved further forward than this.
For example, there may be demands for use such as further expansion of the foot space of the rear seats, or further expansion of the luggage compartment space on the rear side of the rearmost seat, but it is not possible to meet such demands. For this reason, there was dissatisfaction in terms of convenience in use.

Therefore, the present invention is
In other words, since it is a one-point usage form, even if the functions originally planned by the seat device are somewhat restricted, for example, the necessary foot space cannot be secured, such restrictions are permitted in use. If necessary, the seat can be additionally slid further to the front side than the slide front end position in normal use, so that convenience in use is improved. The present invention has been made for the purpose of providing a vehicle seat device capable of further improvement.

[0009]

In the present invention, the following constitution is adopted as a concrete means for solving such a problem.

In the first invention of the present application, the seat back 2B is connected to the seat cushion 2A so as to be tiltable in the seat front-rear direction, and
In a vehicle seat device in which A is attached to the vehicle body floor surface G side via a slide rail mechanism X, the slide rail mechanism X is composed of a first upper rail 4 and a first lower rail 5 which are slidable relative to each other. The first upper rail 4 is composed of a first slide rail mechanism X ₁ fixed to the seat cushion 2A, a second upper rail 6 and a second lower rail 7, and the second lower rail 7 is fixed to the vehicle body floor surface G side. A second slide rail mechanism X ₂ and the first lower rail 5 of the first slide rail mechanism X _1.
And the second upper rail 6 of the second slide rail mechanism X ₂ are integrally coupled to each other, and the seat back 2B is tilted forward at the slide front end position of the first slide rail mechanism X _1. At this time, a lock release mechanism Y for releasing the lock mechanism on the side of the second slide rail mechanism X ₂ in response to the forward displacement of the seat back 2B is provided.

According to this structure, when the first slide rail mechanism X ₁ slides between the slide front end position and the slide rear end position, the second slide rail mechanism X ₂ is prevented from sliding by its lock mechanism. Thus, the seat is moved back and forth within the sliding range of the first slide rail mechanism X ₁ . Incidentally, this first
The selective locking and unlocking of the slide position by the slide rail mechanism X _{1 is performed} by the first slide rail mechanism X.
It is performed by the lock mechanism and the lock release mechanism attached to ₁ .

On the other hand, when the seat back 2B is tilted forward while the first slide rail mechanism X ₁ is locked at the slide front end position, the seat back 2 is moved forward.
In response to the forward displacement of B, the lock release mechanism Y operates,
The second slide rail mechanism X ₂ side of the lock mechanism is released, the second slide rail mechanism X ₂ is slidable between its slide foremost end position and the slide rearmost position. In this case, since the first lower rail 5 of the first slide rail mechanism X ₁ and the second upper rail 6 of the second slide rail mechanism X ₂ are integrally coupled, Slide rail mechanism X ₂
With the slide the first sliding rail mechanism X ₁ is the seat cushion 2A integrally with, yet will slide to the front of the seat beyond the slide foremost end position of the first slide rail mechanism X ₁ in. As a result, the space on the rear side of the seat back 2B is expanded by the amount of forward movement of the seat cushion 2A caused by the slide of the second slide rail mechanism X ₂ .

Incidentally, the slide fixing of the second slide rail mechanism X ₂ within the slide range is performed by the seat back 2
This is performed by raising B from the forward tilted state and returning the lock release mechanism Y to the return state.

In a second invention of the present application, in the vehicle seat device according to the first invention, a seatback interlocking lever 25 that rotates the lock release mechanism Y by receiving forward displacement of the seatback 2B. And a lock release lever 20 for activating the lock mechanism to the lock release side by rotational displacement, the first slide rail mechanism X
_{When 1} is set to the slide front end position and the second slide rail mechanism X ₂ is set to the slide rear end position, and when the seat back 2B is tilted forward, the seat back interlocking lever 25 becomes the lock release lever 20. It is characterized in that it is configured to be engaged and rotated to the unlocking side.

According to this structure, the above-described operation is reliably realized by the lock releasing mechanism Y having the extremely simple and inexpensive structure composed of the seat back interlocking lever 25 and the lock releasing lever 20, and the seat rear side is ensured. It is possible to achieve both expansion of the side space and cost reduction.

[0016]

As described above, according to the vehicle seat device of the present invention, the slide rail mechanism X is composed of the first slide rail mechanism X ₁ and the second slide rail mechanism X ₂ . These two slide rail mechanisms X ₁ ,
By selectively using X ₂ as needed, both comfortable seating during normal use and improvement in convenience due to expansion of the space behind the seat during non-normal use can be realized, which leads to vehicle extension. It can be expected that the commercial value of the seat device will be improved.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be specifically described below based on preferred embodiments.

FIG. 1 shows a vehicle seat device Z according to an embodiment of the present invention. The seat device Z is used as a rear seat (that is, a seat whose rear side is used as a luggage space) in a van type or wagon type vehicle, for example, and is provided at the rear end of the seat cushion 2A. Seat bracket 11 provided and seat bracket 12 provided at the lower end of seat back 2B
And a seat 1 having a seat underframe 3 attached to the lower surface of the seat cushion 2A, and a slide rail mechanism which will be described below. It is configured by being attached to the vehicle body floor surface G via X.

The slide rail mechanism X is constructed by vertically stacking a first slide rail mechanism X ₁ and a second slide rail mechanism X ₂ in two layers and integrating them.

That is, the first slide rail mechanism X
_As shown in FIGS. 1 and 5, reference numeral ₁ denotes a first upper rail 4 having a substantially inverted T-shaped cross section and attached to the lower surface side of the seat underframe 3 in the seat front-rear direction, and an upper opening. And a first lower rail 5 having a substantially C-shaped cross-sectional shape. The first lower rail 5 and the first lower rail 5 are slidably fitted in the axial direction (longitudinal direction) thereof.

Further, the second slide rail mechanism X
Contrary to the first slide rail mechanism X ₁ , ₂ is a second upper rail 6 having a substantially C-shaped cross section that opens downward.
And a second lower rail 7 having a substantially T-shaped cross-sectional shape and both front and rear ends thereof fixed to the vehicle body floor surface G via mounting brackets 9 and 10, respectively, so as to be slidable relative to each other in the axial direction. It is configured by being inserted into.

Then, the first slide rail mechanism X ₁
As shown in FIG. 5, the second slide rail mechanism X ₂ and the lower surface of the first lower rail 5 on the first slide rail mechanism X ₁ side and the second slide rail mechanism X ₂ side on the second slide rail mechanism X ₂ side. (2) The upper rail 6 and the upper surface of the upper rail 6 are joined together by being fixed to each other by welding or the like in a state where they oppose each other to form a rail joint body 8.

Although not shown, the first slide rail mechanism X ₁ is provided with a lock mechanism for fixing the slide operation at a predetermined slide position and a lock release mechanism for releasing the lock action by the lock mechanism. It is slidable within the range of the slide stroke S ₁ between the slide end position (the position shown in FIG. 1) and the slide front end position (the position shown in FIG. 2), and within the range of the slide stroke S ₁ . It can be locked and unlocked at any position.

Further, the second slide rail mechanism X ₂ is also provided with a lock mechanism (not shown) for fixing the slide operation at a predetermined slide position and a lock release mechanism Y (described later) for releasing the lock action by the lock mechanism. Is provided, and is slidable within the range of the slide stroke S ₂ between the slide end position (the position shown in FIG. 1) and the slide front end position (the position shown in FIG. 4).
The lock / unlock can be performed at any position within the range of the slide stroke S ₂ .

Therefore, the seat 1 is slidable in the vehicle front-rear direction with respect to the vehicle body floor surface G by the sliding operation of the slide rail mechanism X, and the entire slide stroke S thereof is the first slide rail mechanism X. ₁
Slide stroke S ₁ and the slide stroke S ₂ of the second slide rail mechanism X ₂ (S = S ₁ +
S ₂ ).

By the way, in the seat device Z of this embodiment, the first slide rail mechanism X ₁ and the second slide rail mechanism X ₁
The slide rail mechanism X ₂ and the slide rail mechanism X ₂ are selectively used depending on the usage form of the seat. That is, the first slide rail mechanism X ₁ is used in such a manner that the occupant is seated on the seat 1 to perform the original function of the seat and the slide position suitable for seating needs to be selected and set (hereinafter, referred to as “seat position”). Is referred to as “during normal use”).

On the other hand, the second slide rail mechanism X ₂ does not assume that the occupant sits on the seat 1.
A usage pattern in which the luggage space on the rear side of the seat back 2B is desired to be further expanded than that when the first slide rail mechanism X ₁ is set to the slide front end position (hereinafter, this is referred to as "non- "In normal use").

Therefore, the mounting position of the seat device Z in the vehicle front-rear direction with respect to the vehicle body floor surface G is a state in which the first slide rail mechanism X ₁ is set at the slide front end position (state shown in FIG. 2). In the above, a sufficient foot space on the front side of the seat 1 can be ensured, and the second slide rail mechanism X ₂ is further moved to the rearmost slide position while the first slide rail mechanism X ₁ is set to the slide frontmost position. The seat 1 is appropriately set such that the seat 1 is located immediately after the front seat in the state set to (1) (state shown in FIG. 4).

Therefore, the second slide rail mechanism X ₂
Is a state in which the first slide rail mechanism X ₁ is set to the slide front end position and a seating of an occupant on the seat 1 is blocked (specifically, the seat back 2B).
In a state in which the occupant can be seated on the seat 1 (specifically, the seat back 2B is raised backward). Further, it is necessary that the operation is restricted when the first slide rail mechanism X ₁ slides between the slide front end position and the slide rear end position. In order to realize the operation of the second slide rail mechanism X ₂ , the lock releasing mechanism Y described below is provided.

The lock releasing mechanism Y is, as described above,
The above-mentioned second slide rail mechanism X ₂ during non-normal use
Of the lock mechanism (not shown) provided in the second slide rail mechanism X ₂ is released from the front of the seat back 2B. It is configured so that it can operate in conjunction with the tilting motion.

That is, the lock release mechanism Y comprises a lock release lever 20 and a seat back interlocking lever 25 described below.

As shown in FIG. 1, the lock release lever 20 is composed of a substantially L-shaped lever body.
A pivot pin 21 is pivotally supported on a side surface of the rail coupling body 8 at an axially intermediate portion thereof, and is rotatable about the pivot pin 21 in an arrow ef direction. One end 20a of the lock release lever 20 is provided with an engaging member 22 while the other end 22b is provided with the lock release cable 2.
3 is connected to one end of the cable inner 24.
The other end of the cable inner 24 is connected to a lock mechanism (not shown) provided on the side of the second slide rail mechanism X ₂ and is pulled (that is, the lock release lever 20 moves in the direction of arrow f). When the second slide rail mechanism X ₂ is slid, the lock mechanism is released by rotating the second slide rail mechanism X ₂ .

The seat back interlocking lever 25 is pivotally supported by the hinge shaft 13 so as to be rotatable in the direction of arrow ab, and a pivot pin on the seat underframe 3 side. Pivotally supported by 18 arrow cd
A second rotating lever 15 which is rotatable in the direction is linked by a link 16 so as to be interlocked.

The first turning lever 14 has one end 14
A is an engaging portion that can be engaged with an engaging pin 17 provided on the seat back 2B side, and one end of the link 16 is connected to the other end. Further, the first turning lever 14 is always operated by an urging member (not shown) so that the arrow b
As shown in FIG. 1, when the seat back 2B is urged in the direction of rotation and is rotated in the direction of the arrow b, the one end 14a is in the standard position of the seat back 2B (that is, the most forward tilted position when seated). The maximum rotation position is regulated by a stopper (not shown) at a rotation position that is close to and facing the engagement pin 17 in the state (position).

The second turning lever 15 has one end 15
The other end of the link 16 is connected to a, while the other end 15b is provided with an engaging member 19 projectingly engageable with the engaging member 22 of the lock release lever 20. By inputting the rotational displacement of the moving lever 14 via the link 16, the movable lever 14 can be rotated in the direction of arrow cd.

The relative relationship between the second rotating lever 15 and the lock releasing lever 20 is set as follows.

That is, in the vertical direction, the height position of the engaging element 19 on the second rotating lever 15 side in the state where the first rotating lever 14 is restricted from rotating in the direction of the arrow b, and When the lock release lever 20 is urged to rotate in the direction of the arrow e (the state of FIG. 1), the engagement element 22 overlaps with the engagement element 22 (that is, engages in the sliding direction (see FIG. 2). )) The height is set relatively.

On the other hand, in the sliding direction,
As shown in FIGS. 1 and 2, with the seat back 2B in the rearward-raising posture, the first slide rail mechanism X ₁
When sliding between the slide front end position and the slide rear end position, the engaging element 19 on the second rotating lever 15 side and the pivot pin 2 on the lock releasing lever 20 side.
1 is maintained in the disengaged state, and at the slide front end position of the first slide rail mechanism X ₁ , these both closely face each other (state of FIG. 2), while the slide of the first slide rail mechanism X ₁ When the seat back 2B is tilted forward at the most front end position, as shown in FIG. 3, the engagement pin 17 is engaged with the one end 14a of the first turning lever 14 as the seat back 2B is tilted forward. It is set to rotate this in the direction of arrow a. Then, in response to the rotational displacement of the first rotary lever 14, the second rotary lever 15 is received.
When is rotated in the direction of arrow c, the engagement element 19 is engaged with the engagement element 22 to rotate the lock release lever 20 in the direction of arrow f.

Next, the operation of the seat device Z configured as described above will be specifically described.

FIG. 1 shows a seat back 2B of the seat 1.
Is in the rearward-raising posture, and the first slide rail mechanism X is
₁ and the second slide rail mechanism X ₂ are both set to the slide end position (hereinafter, this state is referred to as the “first state”), and FIG. 2 shows the state from the first state. This is a state in which the first slide rail mechanism X ₁ is operated and set to the slide front end position (hereinafter, this state is referred to as a "second state").

In the sliding range between the "first state" and the "second state", the first turning lever 14 is still biased to turn in the direction of arrow b.
The engagement element 19 of the turning lever 15 and the lock release lever 2
Therefore, the second slide rail mechanism X ₂ is kept locked at the rearmost slide position. Therefore, within the range of the “second state” of the “first state”, the occupant can freely change and set the front-rear position of the seat 1 in accordance with his / her own preference, so that a comfortable sitting state is possible. Is obtained.

Even between the "first state" and the "second state", the required luggage compartment space is secured on the rear side of the seat back 2B, and the occupant is free to use this luggage compartment. Space can be used.

On the other hand, for example, during the non-normal use that requires a larger luggage compartment space than the luggage compartment space in the "second state" (that is, the maximum luggage compartment space during normal use), the seat 1 is It is necessary to move the position further forward than the position in the “second state” to expand the luggage compartment space. In this case, as shown in FIG. 3, the seat back 2B is tilted forward in the "second state". Then, following the forward displacement of the seat back 2B, the engaging pin 17 abuts and engages with the one end 14a of the first rotating lever 14 to rotate the first rotating lever 14 in the direction of arrow a. Let The rotation displacement of the first rotation lever 14 causes the second movement of the second rotation lever 14 via the link 16.
It is transmitted to the rotation lever 15 as rotation in the direction of arrow c,
The engagement element 19 of the second rotation lever 15 engages with the engagement element 22 of the lock release lever 20 to rotate it in the direction of arrow f. By rotating the lock release lever 20 in the direction of arrow f, the cable inner 24 of the lock release cable 23 connected to the lock release lever 20 is pulled upward, and the lock mechanism (not shown) connected to the other end side is released. Thus, the second slide rail mechanism X ₂ can be slid. The slidable state of the second slide rail mechanism X ₂ is maintained as long as the seat back 2B is maintained in the forward tilted posture.

Therefore, after that, the second slide rail mechanism X ₂ can be arbitrarily slid between the slide end position shown in FIG. 3 and the slide front end position shown in FIG. 4 to be locked at any position. For example, it is possible to secure a larger luggage compartment space than the maximum luggage compartment space during normal use, and it is possible to load larger luggage without trouble, which greatly improves the convenience of using the luggage compartment space. Will be improved.

The locking of the second slide rail mechanism X _{2 at} an arbitrary position is realized by raising the seat back 2B in the forward tilted posture and setting it in the rearward raised posture. That is, when the seat back 2B is triggered, the forced turning force of the engaging pin 17 with respect to the first turning lever 14 is released accordingly, and the second turning lever 15 is returned and turned. The second rotation lever 15
The turning operation force on the lock release lever 20 due to is eliminated. As a result, the lock release lever 20 is rotated back to the initial position and the lock mechanism is locked.

Further, in the above-mentioned embodiment, the seat arranged at the rearmost part of the vehicle is used as an object, and the seat can be moved further forward than the slide front end position in the normal use. However, the present invention is not limited to such a configuration, and in short, it can be widely applied to a seat that can be moved further forward than the slide front end position during normal use, for example, the first row. It can be applied to a seat to further expand the foot space of the second row seat, and the like.

[Brief description of drawings]

FIG. 1 is a side view of a vehicle seat device according to an embodiment of the present invention at a first slide position.

FIG. 2 is a side view of the vehicle seat device according to the embodiment of the present invention at a second slide position.

FIG. 3 is a side view of the vehicle seat device according to the embodiment of the present invention at a third slide position.

FIG. 4 is a side view of the vehicle seat device according to the embodiment of the present invention at a fourth sliding position.

5 is an enlarged sectional view taken along line VV of FIG.

[Explanation of symbols]

1 is a seat, 2A is a seat cushion, 2B is a seat back, 3 is a seat underframe, 4 is a first upper rail, 5 is a first lower rail, 6 is a second upper rail, 7 is a second lower rail, and 8 is a rail combination. Body, 9 and 1
0 is a mounting bracket, 11 and 12 are seat brackets, 13 is a hinge shaft, 14 is a first rotating lever, 15 is a second rotating lever, 16 is a link, 17 is an engaging pin, 18 is a pivot pin, 19 Is an engaging element, 20 is a lock release lever, 2
1 is a pivot pin, 22 is an engaging element, 23 is a lock release cable, 24 is a cable inner, 25 is a seat back interlocking lever, G is the floor surface of the vehicle body, X is a slide rail mechanism, and X ₁
Is a first slide rail mechanism, X ₂ is a second slide rail mechanism, S ₁ is a first slide stroke, S ₂ is a second slide stroke, S is a full stroke, and Z is a vehicle seat device.

Claims (2)

[Claims] 1. A seat back (2B) is connected to a seat cushion (2A) so that the seat back (2B) can be tilted up and down in the front-back direction of the seat, and the seat cushion (2A) is attached to a vehicle body floor surface through a slide rail mechanism (X). A vehicle seat device mounted on the (G) side, the slide rail mechanism (X) comprising a first upper rail (4) and a first lower rail (5) slidable relative to each other. The first slide rail mechanism (X, in which the 1 upper rail (4) is fixed to the seat cushion (2A).
₁ ), a second upper rail (6), and a second lower rail (7), and the second lower rail (7) is fixed to the vehicle body floor surface (G) side, a second slide rail mechanism (X ₂ ).
And integrally connecting the first lower rail (5) of the first slide rail mechanism (X ₁ ) and the second upper rail (6) of the second slide rail mechanism (X ₂ ). In addition, when the seat back (2B) is tilted forward at the slide front end position of the first slide rail mechanism (X ₁ ), the seat back (2B) receives the forward displacement and the second
A vehicle seat device comprising a lock release mechanism (Y) for releasing a lock mechanism on the side of the slide rail mechanism (X ₂ ). 2. The lock release mechanism (Y) according to claim 1, wherein the lock release mechanism (Y) is the seat back (2).
B) a seat back interlocking lever (25) that rotates in response to the forward displacement, and a lock release lever (20) that operates the lock mechanism to the lock release side by the rotational displacement, the first slide rail The seat back interlocking lever when the seat back (2B) is tilted forward with the mechanism (X ₁ ) set to the foremost slide position and the second slide rail mechanism (X ₂ ) set to the last slide position. A vehicle seat device, wherein (25) is configured to engage with the lock release lever (20) and rotate the lock release lever (20) toward a lock release side.