JP2002264708A - Seat structure for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To widen a clearance with a back panel on the lower part side of a seat back for improving sitting comfort when the seat back is in a raised state. SOLUTION: By raising the seat back 12, the clearance δ between the seat back 12 and the back panel 13 is widened by a clearance adjusting means 30 and a bending quantity of the seat back 12 to a direction of the clearance δwith the back panel 13 is increased in a sitting state of an occupant. At this time, since variation of the clearance δ is enlarged by the means 30 on the lower part side largely influencing to the sitting comfortableness than the upper part side, a good sitting comfortableness of the occupant can be secured.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat structure in which a seat back is tilted toward the front of a vehicle body so that a back surface thereof can be effectively used as a part of a floor of a luggage compartment.

[0002]

2. Description of the Related Art In a vehicle seat structure, for example, as disclosed in Japanese Utility Model Laid-Open No. 55-138141,
When the seat back is tilted forward about the support shaft at the lower end of the seat cushion (forward tilt), the back panel covering the back of the seat back can be effectively used as a part of the floor of the luggage compartment. Things are known.

[0003] A gap is maintained between the seat back and the back panel when the seat back is raised so that the sitting comfort is good. The gap is larger on the upper side than on the lower side of the seat back. Thus, when the seat back is tilted forward, the back panel is reduced by being rotated about its lower end.

[0004]

However, in such a conventional vehicle seat structure, the amount of change in the gap between the seat back and the back panel is higher than the lower portion of the seat back as described above. The seat side is increased, and it is difficult to greatly increase the amount of change in the gap at the lower part of the seat back where the influence of the occupant's sitting comfort is great, so that it is difficult to improve the sitting comfort.

Accordingly, the present invention provides a vehicle seat structure in which when the seat back is in an upright state, a gap between the seat back and the back panel is widened at a lower side of the seat back to improve sitting comfort. Is what you do.

[0006]

According to the first aspect of the present invention, there is provided a seat back which can be tilted forward to make the back part of the floor of the luggage compartment, and a seat back which is spaced apart from the seed back. A back panel for covering, wherein a gap between the seat back and the back panel is narrower when the seat back is moved forward than when the seat back stands up. The amount of change in the gap between the back and the back panel,
A gap adjusting means for adjusting the lower portion of the seat back to be larger than the upper portion thereof is provided.

According to a second aspect of the present invention, in the vehicle seat structure according to the first aspect, the gap adjusting means includes a restraining means for holding the upper end of the back panel close to the seat back. And

[0008] In the invention of claim 3, claims 1 and 2
Wherein the gap between the back panel and the seat back is integrally provided on both sides of the back panel with a gap closing member that overlaps and closes both sides of the seat back. And

According to the invention of claim 4, claims 1 to 3 are provided.
In the vehicle seat structure according to the above, the gap adjusting means,
A first rotating shaft having a lower end portion of the back panel rotatably mounted on the floor surface, a hinge member having one end rotatably mounted on the upper end portion of the back panel, and a second end of the hinge member having the other end connected to the seat back. A second rotating shaft rotatably attached to the upper end.

According to a fifth aspect of the present invention, in the vehicle seat structure according to the fourth aspect, the first rotating shaft is located close to and substantially flush with the floor of the luggage compartment. It is characterized in that it is arranged at a distance.

[0011]

According to the first aspect of the present invention, since the gap between the seat back and the back panel is reduced by moving the seat back forward, the seat back is compactly stored to reduce the load room space. Can be expanded.

On the other hand, when the seat back is raised, the gap between the seat back and the back panel is widened, so that the seat back in the seated state of the occupant increases the amount of bending in the gap direction with the back panel. At this time, the amount of fluctuation of the gap when the seat back is in the upright state is larger than the upper side of the seat back where the influence on the sitting comfort is increased by the gap adjusting means. Comfortable sitting comfort can be ensured.

According to the second aspect of the present invention, the first aspect is provided.
In addition to the effect of the invention, the upper end portion of the back panel is held close to the seat back by the restraining means provided in the gap adjusting means, so that the back panel approaches the seat back at the upper end which is easily visible. From that
Since a member for closing the gap is not particularly required at the adjacent upper edge, the appearance can be improved and the cost can be reduced.

According to the third aspect of the present invention, in addition to the effects of the first and second aspects of the present invention, a gap closing member is integrally provided on both sides of the back panel so that the back panel is close to the seat back. At times, the gap closing member overlaps both sides of the seat back to close the gap, so that the fluctuating side gap can be closed with good appearance. In addition, since the gap closing member moves integrally with the back panel when it is moved forward and upright, the trouble of moving the gap closing member each time is eliminated.

According to the invention described in claim 4, according to claim 1 of the present invention,
In addition to the effects of the inventions of ~ 3, when the seat back is moved forward,
The back panel is constrained by the second pivot axis and the hinge member at the upper end and is pivoted together with the seat back about the first pivot axis. When the seat back stands, the back panel is pushed up by the seat back. Since the rotation is performed about the first rotation axis, the distance between the first rotation axis provided on the back panel and the second rotation axis provided on the seat back changes due to the forward tilting and the standing operation. However, the amount of change in the distance can be absorbed by the hinge member, and the seat back can be smoothly moved forward and upright.

According to the invention set forth in claim 5, according to claim 4,
In addition to the effects of the invention, the first rotating shaft is disposed close to the floor of the luggage compartment and substantially at the same height as the floor of the luggage compartment. Can be made almost flush with the floor of the luggage compartment, and the loadability of the luggage can be improved.

Further, since the first rotating shaft is arranged close to the luggage compartment floor surface, the clearance between the luggage compartment floor surface and the back panel can be made smaller to improve the appearance of the luggage compartment. it can.

[0018]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 5 show a first embodiment of a vehicle seat structure according to the present invention, FIG. 1 is a side view showing a standing state of a seat back, FIG. 2 is a side view showing a seat back leaning state, and FIG. 1 is a cross-sectional view taken along the line AA in FIG. 1, FIG. 4 is a perspective view of the seat back in an upright state, and FIG. 5 is a perspective view of the seat back in a forward lean state.

In the first embodiment, the present invention is applied to a vehicle seat 10 configured as a seat cushion flip-up type. This vehicle seat 10 is normally used as a rear seat, and is shown in FIGS. As shown in the figure, the vehicle is provided with a seat cushion 11 and a seat back 12, and the front of the vehicle body (left side in the figure) with a stepped portion 20a from the floor surface 20 of the cargo room.
Is installed on the body floor 21 which is one step lower.

The seat cushion 11 has a lower front end attached to a vehicle body floor 21 via a turning bracket 22, and a turning point 22 a at the tip of the turning bracket 22.
The rear end of the seat cushion 11 is rotatable upward around the center.

When the vehicle seat 10 is used normally, as shown in FIG. 4, the seat cushion 11 is stably placed on the vehicle body floor 21 as shown in FIG. The seat cushion 11 stands upright so that the rear end of the seat cushion 11 faces upward.

On the other hand, as shown in FIG. 1, the lower end of the seat back 12 is located near the front side of the stepped portion 20a, and the bracket 2 stands upright from the vehicle body floor 21.
3 is rotatably attached to the front of the upper end portion via a seat back rotation shaft 24.

Accordingly, as shown in FIG. 2, the vehicle seat 10 exerts a pushing force in front of the vehicle body on the upper end of the seat back 12 in the upright state in FIG. Then, this seat back 12
Is the vehicle body floor 21 about the seat back rotation shaft 24.
The vehicle seat 10 is folded up, and this state is a state in which the vehicle seat 10 is brought forward.

A back panel 13 is provided on the back surface (right side in FIG. 1) 12a of the seat back 12 so that the front surface of the back panel 13 can be used as a cargo floor 20 when the seat back 12 is tilted forward. Has become.

The back panel 13, as shown in FIG.
An appropriate gap δ is provided between the seat back 12 and the back surface 12a, and the gap δ can be changed via the gap adjusting means 30 between when the seat back 12 is tilted forward and when it is raised.

That is, when the seat back 12 is standing,
As shown in FIG. 1, the gap δ is widened, and in the forward tilted state, as shown in FIG. 2, the gap δ is narrowed or eliminated, and the back panel 13 is placed on the seat back 12.

In this embodiment, when the seat back 12 is in the upright state by the gap adjusting means 30, as shown in FIG. Below the gap (gap δ1)
2) is made larger.

As shown in FIG. 1, the gap adjusting means 30 includes a first rotating shaft 31 having a lower end of the back panel 13 rotatably mounted on the floor 20 of the luggage compartment, and one end of the back panel 13. Hinge member 3 rotatably attached to the upper end
2 and a second pivot shaft 33 in which the other end of the hinge member 32 is rotatably attached to the upper end of the seat back 13. The hinge member 32 extends the upper end of the back panel 13. It constitutes a restraining means for holding the seat back close to the seat back 12. At this time, the first rotating shaft 31 is disposed near the luggage compartment floor surface 20 and at substantially the same height as the luggage compartment floor surface 20.

Therefore, the back panel 13 can be tilted and raised about the first rotation shaft 31 when the seat back 12 is tilted forward and raised, and becomes the center of rotation of the seat back 12 at this time. A seat back rotation shaft 24 and a first rotation center of the back panel 13
As shown in FIG. 1, the seat back 1 is offset from the pivot shaft 31 by a distance L1 in the vehicle longitudinal direction.
A predetermined amount of relative displacement L2 (see FIG. 2) occurs between the front panel 2 and the back panel 13 between the forward tilt and the upright position.

Therefore, the length of the hinge member 32 is set so that the back panel 13 can tolerate the relative displacement L2.

Also, on both sides of the back panel 13, when the seat back 12 is tilted forward, it overlaps on both sides of the seat back 12, and the back panel 13 and the seat back 12 are overlapped.
And a gap closing member 14 for closing the gap δ between them.

That is, as shown in FIG. 1, the gap closing member 14 is provided on both sides of the back panel 13 for the seat back 1.
2 and is formed by bending forward of the vehicle body with a width slightly larger than the maximum amount of the gap δ, as shown in FIG. 1, and as shown in FIG. With the back panel 13 overlaid on 12,
It is set to such an extent that it does not project to the front of the seat back 12.

With the above structure, in the vehicle seat structure of the present embodiment, the seat back 12 is normally erected and the seat cushion 11 is moved upright as shown in FIGS. It is used in a state where it is tilted up.

When the luggage compartment is expanded, FIG.
As shown in FIG. 5, the seat cushion 11 is flipped up and the seat back 12 is moved forward so that the surface of the back panel 13 provided on the back of the seat back 12 is used as a part of the luggage compartment floor surface 20. Become.

At this time, when the seat back 12 is tilted forward, the seat back 12 and the back panel 13 are separated from each other by the gap adjusting means 30 composed of the first rotating shaft 31, the hinge member 32 and the second rotating shaft 33. , The seat back 12 can be compactly stored on the vehicle body floor 21 to further expand the luggage space.

Further, since the first rotating shaft 31 for rotatably attaching the lower end portion of the back panel 13 to the bracket 23 is disposed at substantially the same height as the luggage compartment floor surface 20, the seat back 12 is tilted forward. In this case, the surface of the back panel 13 is made substantially flush with the floor surface 20 of the luggage compartment, so that the loadability of the load can be improved.

Also, since the first rotating shaft 31 is disposed close to the luggage compartment floor surface 20, the luggage compartment floor surface 20 and the back panel 13
Can be made smaller to improve the appearance of the luggage compartment.

On the other hand, when the seat back 12 stands up, the gap δ is widened. Therefore, when the occupant is seated, the seat back 12 is separated from the back panel 13 by the gap δ.
The amount of deflection in the direction increases.

At this time, the variation amount of the gap δ when the seat back 12 stands up is larger by the gap adjusting means 30 on the lower side of the seat back 12 than on the upper side.

That is, by increasing the gap δ on the lower side where the influence on the sitting comfort is increased, good occupant comfort can be ensured.

A gap closing member 14 is provided integrally on both sides of the back panel 13 so that when the back panel 13 approaches the seat back 12, the gap closing member 14 is provided.
Overlaps on both sides of the seat back 12 to close the gap δ, so that the fluctuating gap can be closed with good appearance. In addition, since the gap closing member 14 moves integrally with the back panel 13 when it is moved forward and upright,
In each case, the trouble of moving the gap closing member 14 is eliminated.

When the seat back 12 is tilted forward, the back panel 13 is moved to the second position at the upper end.
Restrained by the rotation shaft 33 and the hinge member 32, the rotation is performed together with the seat back 12 about the first rotation shaft 31,
When the seat back 12 is standing up, it is pushed up by the seat back 12 and is turned around the first turning shaft 31.
Even if the distance between the first rotation shaft 31 provided on the seat back 12 and the second rotation shaft 33 provided on the seat back 12 changes, the amount of change in this distance can be absorbed by the hinge member 32, The seat back 12 can be smoothly moved forward and upright.

FIGS. 6 and 7 show a second embodiment of the present invention. FIG. 6 is a side view showing an upright state of the seat back.
FIG. 4 is a side view showing the seat back in a forwardly inclined state.

In the second embodiment, the present invention is applied to a vehicle seat 10a configured as a seat cushion downward movable type, and the same components as those in the first embodiment are denoted by the same reference numerals and overlap. The description is omitted.

In the vehicle seat 10a of this embodiment, the lower portion of the front end side of the seat cushion 11 has a link 4 having a predetermined length.
0, and is connected to the lower end of the seat back 12 via a connecting link 41 that projects obliquely upward from the rear end toward the rear from the rear end.

The link 40 has a lower end portion on the vehicle body floor 2.
1 is rotatably mounted via a lower pin 40a, and an upper end portion is rotatably mounted on a frame (not shown) of the seat cushion 11 via an upper pin 40b.

The connection link 41 has a base end integrally fixed to the seat cushion 11 and a tip end rotatably attached to a frame (not shown) of the seat back 12 via a pin 41a.

Therefore, when the seat back 12 is pressed from the upright position shown in FIG.
Of the seat cushion 1 via the connecting link 41
1 to push the seat cushion 11 forward.

Then, as shown in FIG. 7, the seat cushion 12 is guided forward and downward with the rotation of the upper pin 40b about the lower pin 40a of the link 40, and descends to the vehicle body floor 21. The seat back 12 overlaps the upper side of the seat cushion 11, and this state is a state in which the vehicle seat 10a is moved forward.

Of course, in this embodiment as well, a back panel 13 is provided on the back surface 12a of the seat back 12, so that the surface of the back panel 13 can be used as a floor surface when the seat back 12 is tilted forward. In the standing state of the seat back 12, the seat back 12
A gap δ is provided between the power supply and the back panel 13.

The gap δ can be varied between the time when the seat back 12 is tilted forward and the time when the seat back 12 stands up through the gap adjusting means 30 as in the first embodiment.
It is needless to say that the variation amount is adjusted so that the lower side is larger than the upper side of the seat back 12.

Therefore, even in this embodiment, the positional relationship between the gap adjusting means 30 and the first rotating shaft 31 with respect to the luggage compartment floor surface 20, the gap closing member 14 provided on the back panel 13, and the like are the same as those of the first embodiment. With the configuration similar to that of the first embodiment, the same function as that of the first embodiment can be exhibited.

FIGS. 8 and 9 show a third embodiment of the present invention. FIG. 8 is a side view showing a standing state of the seat back.
FIG. 4 is a side view showing the seat back in a forwardly inclined state.

That is, in the third embodiment, the present invention is applied to the vehicle seat 10b configured as a fixed seat cushion type, and the same components as those in the first embodiment are denoted by the same reference numerals and are repeated. The explanation is omitted here.

In the vehicle seat 10b of this embodiment, the seat cushion 11 is fixed to the vehicle body floor 21.

Other structures are almost the same as those of the vehicle seat 10 of the first embodiment.

Therefore, also in this embodiment, the arrangement of the gap adjusting means 30 and the first rotating shaft 31 with respect to the luggage compartment floor surface 20, the gap closing member 14 provided on the back panel 13, and the like are the same as those of the first embodiment. , The same functions as those of the second embodiment can be exhibited.

In the third embodiment, the first rotating shaft 3
1 is attached to the boundary between the luggage compartment floor surface 20 and the step portion 20a, regardless of the rotational position of the seat back 12.
The gap between the luggage compartment floor surface 20 and the seat back 12 can be completely closed by the back panel 13. Further, since the seat cushion 11 is of a fixed type, the seat back 12 is inclined as shown in FIG.
In some cases, the flatness of 0 may not be obtained, but even in this case, the load is placed on the seat back 12 so that the load compresses the seat cushion 11 to flatten it.

In the first, second, and third embodiments, the seat cushion 11 is flipped up, moved downward,
The case where the present invention is applied to the fixed type vehicle seats 10, 10a, 10b has been described as an example. However, the present invention is not limited to these seat types, and the gap between the seat back and the back panel can be reduced when the seat back is moved forward. The present invention can be applied to a vehicle seat having a structure that is narrower than when the vehicle is standing.

[Brief description of the drawings]

FIG. 1 is a side view of a first embodiment of a vehicle seat structure according to the present invention, showing a seat back in an upright state.

FIG. 2 is a side view of the vehicle seat structure according to the first embodiment of the present invention in a state where a seat back is tilted forward;

FIG. 3 is a cross-sectional view taken along the line AA in FIG. 1, showing the first embodiment of the vehicle seat structure according to the present invention.

FIG. 4 is a perspective view of a first embodiment of a vehicle seat structure according to the present invention, showing a seat back in an upright state.

FIG. 5 is a perspective view of the seat back of the first embodiment of the vehicle seat structure according to the present invention in a state where the seat back is tilted forward.

FIG. 6 is a side view of a vehicle seat structure according to a second embodiment of the present invention, showing a seat back in an upright state.

FIG. 7 is a side view of a vehicle seat structure according to a second embodiment of the present invention in a state where a seat back is tilted forward.

FIG. 8 is a side view of a vehicle seat structure according to a third embodiment of the present invention in an upright state of a seat back.

FIG. 9 is a side view of a vehicle seat structure according to a third embodiment of the present invention in a state where a seat back is tilted forward.

[Explanation of symbols]

 10, 10a, 10b Vehicle seat 11 Seat cushion 12 Seat back 13 Back panel 14 Gap closing member 20 Luggage compartment floor 21 Car body floor 24 Seat back rotation axis 30 Gap adjusting means 31 First rotation axis 32 Hinge member (restraint) Means) 33 Second pivot axis δ Gap

Claims (5)

[Claims] 1. A seat back that can be moved forward to make the back part of the luggage compartment floor surface; and a back panel that is separated from the seed back and covers the back of the seat back. In a vehicle seat structure in which the gap between the seat back and the back panel is narrower than when the seat back is raised, the amount of change in the gap between the seat back and the back panel is determined by: A seat structure for a vehicle, comprising a gap adjusting means for adjusting a lower portion of the seat back to be larger than an upper portion of the seat back. 2. The vehicle seat structure according to claim 1, wherein the gap adjusting means includes a restraining means for holding the upper end of the back panel close to the seat back. 3. A gap closing member integrally provided on both sides of the back panel to close the gap between the back panel and the seat back on both sides of the seat back. The vehicle seat structure according to any one of claims 1 and 2. 4. A gap adjusting means, comprising: a first rotating shaft having a lower end portion of the back panel rotatably mounted on a floor surface of a luggage compartment; and a hinge member having one end rotatably mounted on an upper end portion of the back panel. The vehicle seat according to any one of claims 1 to 3, further comprising: a second pivot shaft rotatably attaching the other end of the hinge member to an upper end portion of the seat back. Construction. 5. The vehicle seat structure according to claim 4, wherein the first rotating shaft is arranged near the floor of the luggage compartment and at substantially the same height as the floor of the luggage compartment.