JPH06225821A - Vehicle seat structure - Google Patents

Abstract

PURPOSE:To secure stability of a seating attitude of an occupant of a small height such as a child when this occupant is seated on a center seat of three- passenger seats of which seat upper surface height is higher than that of each end part seat. CONSTITUTION:For a center seat 16 of three-occupant seats, its installation position is set higher than that of each end part seat 12, 14 because of existence of a tunnel part 20 of a car body panel 18. A part of a seat cushion 16a of the center seat 16 is formed as it is separated to a center part cushion 40, and both side part cushions 42, 42. Hardness is set different between the center part cushion 40 and both side part cushions 42, 42, and the center part cushion 40 is formed softer, with both side part cushion 42, 42 formed harder. When a load is applied to the center part cushion 40, the center part cushion 40 sinks to generate a height difference from both side part cushion 42, 42, thereby a waist part of an occupant is restrained by both side part cushion 42, 42.

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, and more particularly, to seat three passengers in a vehicle width direction, and a seat cushion portion of a central seat thereof is positioned higher than seat cushion portions of end seats on both sides. The present invention relates to a vehicle seat structure to be arranged.

[0002]

2. Description of the Related Art Conventionally, a vehicle seat for three persons has been proposed as disclosed in Japanese Utility Model Laid-Open No. 4-58151.
This three-seater seat is divided into two for the one-person seat and two-seat seats in the vehicle width direction, and the two divided seats are arranged close to each other in the vehicle width direction. When such a three-seater seat is used for the front seat, the one-seat seat is used as a driver's seat and the two-seat seat is used as a passenger seat.

[0003]

However, such a three-seater seat is provided with an F.P. equipped with a propeller shaft. When used for R cars, a tunnel part for passing a propeller shaft is provided in the center of the vehicle body floor so as to project into the passenger compartment. Therefore, the center seat of the three-seat seat is installed higher than the end seats on both sides. Become. Here, if the cushion thicknesses of the center seat and the end seats are made equal, the upper surface height of the seat cushion of the center seat becomes higher than that of the end seats. Therefore, when a child sits in the center seat, his / her feet cannot reach the floor of the vehicle body, and there is a problem that it becomes impossible to maintain stability during traveling.

In view of the above-mentioned conventional problems, the present invention is directed to a case where a small passenger such as a child is seated on the central seat of a three-seat seat whose seat cushion upper surface is higher than the end seats. Another object of the present invention is to provide a vehicle seat structure that can ensure the stability of the seated posture of the occupant.

[0005]

In order to achieve the above object, the present invention is provided with a seat that seats three people in the vehicle width direction, and a seat cushion portion of a central seat is a seat cushion of both end seats. In a vehicle seat structure arranged at a higher position than a portion, a seat cushion portion of the central seat is formed by being divided into a central cushion and both side cushions, and between the central cushion and both side cushions. When the load of the seated occupant acts only on the central cushion, the holding means for providing a height difference is provided so that both side cushions are higher than the central cushion by a predetermined amount.

The holding means can be constructed by making the hardness of the central cushion lower than that of the both side cushions.

Further, the holding means may be constructed as a mechanism for converting the lowering movement of the central cushion due to the load of the occupant into the raising movement of the both side cushions.

Further, the holding means may be constructed as a mechanism for projecting both side cushions upward.

[0009]

With the above structure, in the vehicle seat structure of the present invention, the holding means is provided between the central cushion of the central seat and both side cushions, and the load of the occupant seated by the holding means is the central portion. When acting only on the cushion, that is, when an occupant with a small physique, such as a child, sits only on the central cushion part, a height difference is added so that both side cushions are higher than the central cushion by a predetermined amount. Therefore, the waist of the occupant can be held by the height difference. Therefore, the occupant can be securely held by the both side cushions and the posture can be prevented from becoming unstable even while the vehicle is traveling.
On the other hand, when an occupant with a large physique, such as an adult, sits in the center seat, the load acts across the center cushion and both side cushions, so the space between the center cushion and both side cushions is large. A wide seating area can be secured without any height difference. An occupant, such as an adult with a large physique, has his / her feet on the floor of the vehicle body, so that the seated posture can be maintained even if there is no height difference in the central seat.

Further, by configuring the holding means such that the hardness of the central cushion is lower than that of the both side cushions, when the central cushion is seated, only the central cushion sinks due to the load of the occupant. A height difference can be provided between the cushions on both sides. Therefore, the holding means can have a remarkably simple structure in which the cushion hardness of the central portion and the cushion hardness of both side portions are simply changed.

Further, the holding means is constructed as a mechanism for converting the downward movement of the central cushion due to the load of the occupant into the upward movement of the side cushions.
By simply sitting on the central cushion, both side cushions are automatically lifted to maintain the sitting posture of the occupant.

Furthermore, by constructing the holding means as a mechanism for projecting both side cushions upward, a height difference can be provided between the central cushion and both side cushions, so that the occupant can be held. It can be ensured and the configuration can be simplified.

[0013]

Embodiments of the present invention will now be described in detail with reference to the accompanying drawings. 1 and 2 show a first embodiment of the present invention, FIG. 1 is an overall perspective view showing a seat structure of a vehicle, and FIG. 2 is a sectional view of a main part taken along line AA in FIG.

That is, the vehicle seat 10 shown in FIG. 1 is a three-seater seat that allows three people to sit side by side in the vehicle width direction. This vehicle seat 10 is used for the front seat. . Therefore, the end seat 12 on the right side of the vehicle of the vehicle seat 10 becomes a driver seat, and the end seat 14 and the center seat 16 on the left side of the vehicle become passenger seats. End seat 1 that serves as a passenger seat
4 and the central seat 16 are formed integrally and continuously,
The end seat 14 and the central seat 16 which are integrally formed are
It is formed separately from the end seat 12 that serves as a driver's seat, and the driver's seat and the passenger's seat, which are respectively divided, are capable of independent slide adjustment and reclining adjustment.

By the way, the three-seat vehicle seat 10 is an F.S. A tunnel portion 20 for passing a propeller shaft (not shown) is formed in a vehicle front-rear direction in a central portion of a vehicle body panel 18 used for an R vehicle and to which the vehicle seat 10 is attached. Therefore, the central seats 16 are the end seats 12, 1 on both sides.
4 is set higher than the seat cushion 16a of the central seat 16 so that the upper surface of the seat cushion 16a of the central seat 16 is higher than the upper surfaces of the seat cushions 12a and 14a of the end seats 12 and 14, Vehicle seat 10
Is formed by swelling the central part of the.

Seat belts 22 and 24 (the seat belts for the passenger seat end seat 14 are not shown) are provided on the end seats 12 and 14 and the center seat 16, respectively. One end side of the seat belt 22 for the end seat 12 serving as a driver's seat is wound around a retractor (not shown) housed in the center pillar 26 on the side of the vehicle compartment, and the other end is a side sill anchor (not shown). The tongue 28, which is fixed and supported and is inserted through the intermediate portion of the seat belt 22, is attached and detached to and from the lap anchor 30 provided between the end seat 12 and the central seat 16. Has become. Also,
Similarly, the seat belt for the end seat 14 (not shown) is also supported by the center pillar on the opposite side, and the tongue is provided between the end seat 14 and the center seat 16.
It is designed to be attached and detached to 2. Further, the central seat 1
The seat belt 32 for 6 is stretched from a retractor (not shown) and then the shoulder anchor 3 provided at the upper end of the seat back 10a on the side closer to the end seat 12 serving as the driver's seat.
After being guided to 4, the front end portion is fixed to the lower end portion of the seat back 10a, and the tongue 36 inserted into the seat belt 24 is attached to and detached from the lap anchor 38 between the end seat 14 and the lap anchor 38. .

Here, in the present embodiment, the central seat 1
As shown in FIG. 2, the seat cushion 16a of No. 6 has a central cushion 40 and side cushions 42, 42.
It is divided into and formed. The both side cushions 42, 4
2 is integrally formed from the base pad 44 of the seat 10 in a U-shaped cross section, and the central cushion 40 is fitted in the recess 44a formed in the central portions of the side cushions 42, 42. By changing the hardness of the central cushion 40 and the side cushions 42, 42, the central cushion 4
0 is made soft, and both side cushions 42,
42 is formed hard. The holding means is configured by changing the hardness of the central cushion 40 and the side cushions 42, 42 as described above, and a load acts on the central cushion 40 so that the central cushion 40 sinks. A height difference is provided between the two side cushions 42, 42. The central cushion 4
The width W of 0 is formed according to the waist size of an occupant having a small physique such as a child, and the load (weight) acts only on the central cushion 40 when the occupant is seated. The central cushion 40, the side cushions 42, 42, and the base cushion 44 are covered with a skin 46.

In the seat structure according to the present embodiment having the above-described structure, an occupant having a small physique, such as a child, is in the central seat 1.
When seated at 6, the weight of this occupant acts only on this central cushion 40. At this time, since the central cushion 40 is formed to be soft, the central cushion 40 sinks according to the weight of the occupant as shown by the broken line in the figure, and there is a difference in height between the both side cushions 42, 42. The both side cushions 42, 42 are attached so that they are projected from the central cushion 40. Therefore, the waist portions of the seated occupant can be restrained by the protruding side cushions 42, 42, and the seated posture of the occupant can be maintained while the vehicle is traveling. For this reason, even when the foot of the occupant does not reach the vehicle body floor 18, it is possible to prevent the occupant from collapsing when lateral force is applied during cornering or the like.

When an occupant having a large physique, such as an adult, sits on the central seat 16, the occupant sits astride the central cushion 40 and the side cushions 42, 42 because the waist is large. . Therefore, since the weight of the occupant acts on the central cushion 40 and the side cushions 42, 42, the height difference between the central cushion 40 and the side cushions 42, 42 is prevented. For this reason, an occupant having a large physique can secure a wide seating area by both the central cushion 40 and the side cushions 42, 42. Further, since an occupant such as an adult with a large physique has his / her feet on the vehicle body floor 18, the occupant can maintain the sitting posture without restraining the waist.

FIG. 3 shows a second embodiment of the present invention, in which the same components as those of the above-mentioned embodiment are designated by the same reference numerals, and a duplicate description will be omitted. That is, in this embodiment, the lowering operation of the central cushion 40 by the load of the occupant is performed by the side cushions 4
A mechanism for converting into a raising motion of 2, 42 is used as a holding means.

In this embodiment, the central cushion 40 and the side cushions 42, 42 are formed separately from the base pad 44, and are attached to the base pad 44 so as to be movable up and down. Between the central cushion 40 and the both side cushions 42, 42, there is provided a communication pipe 50 as a holding means for enclosing a fluid. Communication pipe 5
0 is a first protrusion 50a that supports the lower side of the central cushion 40 at the center, and both side cushions 42, 42 at both ends.
It is formed in a mountain shape by a pair of second protrusions 50b, 50b that support the lower side, and is configured as a closed tube in which a fluid such as gas or liquid is enclosed. The first protrusion 5
0a and the second projecting portions 50b, 50b are respectively formed with bellows portions 52 so that they can be expanded and contracted.

Therefore, in this embodiment, when an occupant having a small physique sits on the central seat 16 and the weight acts on the central cushion 40, the central cushion 40 moves downward to shorten the first protruding portion 50a. . Then, the pressure in the communication pipe 50 rises to extend the second protrusions 50b and 50b,
Both the side cushions 42, 42 are raised by the pushing force. For this reason, as shown by the broken line in the figure, the central cushion 40 that has sunk and the both side cushions 42 and 4 that have risen are shown.
A height difference h is provided between the two and the two side cushions 42, 42 to restrain the waist of the occupant.

4 and 5 show a third embodiment of the present invention,
The same components as those in each of the above-described embodiments will be designated by the same reference numerals and redundant description will be omitted. That is, in this embodiment, as in the second embodiment, the lowering operation of the central cushion 40 is performed.
It is adapted to be converted into a raising motion of the both side cushions 42, 42.

Even in this embodiment, the central cushion 4
0 and both side cushions 42, 42 to the base pad 4
4, a conversion mechanism 60 as a holding means is mounted between the central cushion 40 and both side cushions 42, 42.

The conversion mechanism 60 includes a central cushion 4
The movement of the operating frame 62 attached to the lower side of the
It is constituted by transmitting to 42. The actuating frame 62 is formed in a rectangular shape along the lower shape of the central cushion 40, and pins 68 project from the rear ends thereof. The cam 64 is formed in an L shape and is rotatably attached to the base pad 44 via a pin 70 protruding from the bent portion. A pin 68 of the operation frame 62 is engaged with an elongated hole 64a formed at one end of the cam 64,
The cam 64 is rotated along with the lowering of the operation frame 62.

The link 66 is provided at the other end of the cam 64.
Is attached to the front ends of the side cushions 42, 42 via a bracket 70. A guide bracket 72 is attached to the rear ends of the side cushions 42, 42, and the guide bracket 72 is attached to the base pad 44.
Is engaged with the connecting pin 74 attached to.

Therefore, in this embodiment, when an occupant having a small size is seated on the central cushion 40, the operating frame 6
2 descends to rotate the cam 64, and this turning power is applied to the link 6
The front ends of both side cushions 42, 42 are pushed up via 6. Then, the both side cushions 42, 42 pivot upward about the guide bracket 72 at the rear end portion, and a height difference can be made between the both side cushions 42, 42 and the central portion cushion 40.

FIG. 6 shows a fourth embodiment of the present invention, in which the same components as those in the above-mentioned embodiments are designated by the same reference numerals, and a duplicate description will be omitted. That is, in this embodiment, the holding means is constituted by a mechanism in which the both side cushions 42, 42 are manually lifted upward and projected.

In this embodiment, a concave portion 80 is formed in the base cushion 44 of the central seat 16, the bottom surface of the concave portion 80 serves as the central cushion 40, and both side cushions 42, 42 are attached to both sides so as to be openable and closable. Hold means is configured. The both side cushions 42, 4
2 is formed to be longer than the depth of the concave portion 80, and the base end portion of the concave portion 80 is rotatably attached via a rotary shaft 82. And
When the both side cushions 42, 42 are laid down as shown by the solid line in the figure, the upper surfaces thereof are substantially horizontal when the tips of the two cushions are close to each other, and the both side cushions are shown by the broken lines in the figure. When 42, 42 are pushed open and stood up, the tip end projects from the central seat 16 to provide a height difference. In addition, the both side cushions 4
2, 42 are opened and closed manually.

Therefore, in this embodiment, when an occupant having a small physique sits on the central seat 16, both side cushions 42,
42 by pushing open, these side cushions 42, 4
The waist can be restrained by sitting between the two. Further, when an occupant having a large physique sits on the central seat 16, the seating area can be secured large by tilting the side cushions 42, 42 to flatten the upper surface.

7 and 8 show a fifth embodiment of the present invention,
The same components as those in each of the above-described embodiments will be designated by the same reference numerals and redundant description will be omitted. That is, in this embodiment, as in the fourth embodiment, the both side cushions 42, 42 are manually lifted upward to project.

In this embodiment, the central cushion 40 is integrally formed from the base pad 44, and the concave portions 90, 90 are formed on both sides of the central cushion 40, and the both side cushions 42, 42 are formed in the concave portions 90, 90. Are arranged so that they can move relative to each other. Both side cushions 42, 42 are vertically movable by being guided by a guide mechanism 92 which is a holding means embedded in the central cushion 40.

The guide mechanism 92 is provided with a pair of guides 94, 94 incorporated in the central cushion 40, and a connecting pin 96 for connecting the two side cushions 42, 42 to each other and an appropriate interval with the connecting pin 96. The protruding guide pins 98, 98 are attached to the guides 94, 9
It has a structure that guides to 4. Also, the connecting pin 96
Is urged forward by the return spring 100.

The guides 94, 94 are curved rearward and upward, and guide grooves 94a, 94a are formed in the guides 94, 94. Guide grooves 94a, 9
The upper end of 4a continues from the upper end of the guides 94, 94 to hooking grooves 94b, 94b that are formed continuously in the horizontal direction forward. The connecting pin 96 and the guide pins 98, 98 are slidably engaged with the guide grooves 94a, 94a, and the connecting pin 96 is guided by the guide groove 94 in the housed state shown in the drawing.
It is located at the front end of a, 94a. Further, pull tabs 102 are formed on the rear upper surfaces of the side cushions 42, 42.

Therefore, in this embodiment, a wide seating area is ensured when the illustrated side cushions 42, 42 are laid down, and a passenger with a large body size can be seated. on the other hand,
By holding the pull tabs 102 and lifting the rear end portions of the side cushions 42, 42 upward, the connecting pins 96 and the guide pins 98, 98 are guided by the guide grooves 94a, 94.
It moves rearward and upward along a, and then positions the guide pins 98, 98 in the hook grooves 94b, 94b. Then, the both side cushions 42, 42 are held in a state where the rear ends thereof are lifted upward, and a height difference can be provided between the both side cushions 42, 42 and the central cushion 40.

In each of the above-mentioned embodiments, the seat cushion 16a portion of the central portion 16 is divided into the central cushion 40 and the side cushions 42, 42 so that when the occupant with a small body is seated, the central portion is formed. Although the one in which both side cushions 42, 42 are made higher than the partial cushion 40 to restrain the occupant is disclosed, this technical idea can be applied to the seat back 34. In other words, the seat back cushion is divided into the central portion and both side portions, and the holding means is provided between the central portion and the both side portions to improve the seat back holding performance when a small occupant is seated. You can

[0037]

As described above, according to the first aspect of the present invention.
In the vehicle seat structure shown in Fig. 2, the seat cushion portion of the central seat, which is located higher than the end seats, is formed by the central cushion and the side cushions that are divided from each other. A holding means is provided between the central cushion and the central cushion so that when the load is applied only to the central cushion, the height of both cushions is higher than the central cushion by a predetermined amount. When an occupant with a small physique sits in the center seat, the load of the occupant acts only on the central cushion, and the waist of the occupant can be held by the height difference. Therefore, even if the feet of a passenger having a small body size cannot reach the floor of the vehicle body, the passengers can be reliably held by the side cushions.

Further, according to the second aspect of the present invention, since the holding means is constituted by making the hardness of the central cushion lower than that of the both side cushions, only the central cushion sinks due to the load of the occupant. Thus, a height difference can be provided between the both side cushions, and the structure of the holding means can be remarkably simplified.

Further, in claim 3 of the present invention, the holding means is configured as a mechanism for converting the lowering operation of the central cushion due to the load of the occupant into the ascending operation of the both side cushions. By simply sitting on the cushion, both side cushions are automatically raised, and the seated posture of the occupant can be reliably maintained.

Furthermore, according to claim 4 of the present invention,
Since the holding means is configured as a mechanism for protruding the both side cushions upward, a height difference can be provided between the central cushion and the both side cushions, so that the occupant can be reliably held and the structure thereof can be improved. It has various excellent effects that can be simplified.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing a first embodiment of a vehicle seat structure according to the present invention.

FIG. 2 is a cross-sectional view of main parts taken along the line AA in FIG. 1 showing the first embodiment of the present invention.

FIG. 3 is a sectional view of a main part corresponding to FIG. 2, showing a second embodiment of the present invention.

FIG. 4 is a sectional view of an essential part corresponding to FIG. 2, showing a third embodiment of the present invention.

FIG. 5 is a perspective view showing a main part of a third embodiment of the present invention in a see-through manner.

FIG. 6 is a cross-sectional view of an essential part corresponding to FIG. 2 showing a fourth embodiment of the present invention.

FIG. 7 is a cross-sectional view of an essential part corresponding to FIG. 2, showing a fifth embodiment of the present invention.

FIG. 8 is a perspective view showing a main part of a fifth embodiment of the present invention in a see-through manner.

[Explanation of symbols]

10 Vehicle Seats 12 and 14 End Seats 16 Center Seat 18 Body Panel 20 Tunnel Part 40 Central Cushion 42 Both Sides Cushion 50 Communication Pipe (Hold Means) 60 Conversion Mechanism (Hold Means) 92 Guide Mechanism (Hold Mechanism)

Claims (4)

[Claims] 1. A vehicle seat structure, comprising a seat for three persons in a vehicle width direction, wherein a seat cushion portion of a central seat is arranged at a higher position than seat cushion portions of end seats on both sides. When the seat cushion portion of the central seat is divided into a central cushion and both side cushions, and the load of the seated occupant acts only on the central cushion between the central cushion and both side cushions. A seat structure for a vehicle, further comprising: holding means for providing a height difference so that both side cushions are higher than the central cushion by a predetermined amount. 2. The vehicle seat structure according to claim 1, wherein the holding means is configured by making the hardness of the central cushion lower than that of the both side cushions. 3. The vehicle seat structure according to claim 1, wherein the hold means is a mechanism for converting a lowering operation of the central cushion due to a load of an occupant into an ascending operation of the both side cushions. 4. The vehicle seat structure according to claim 1, wherein the holding means is a mechanism that allows the side cushions to project upward.