JP6894027B1 - Vehicle seat tilting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat tilting device capable of tilting a seat more greatly with a simple structure and improving comfort in the left-right direction in a cabin. A vehicle seat tilting device 1 includes seats 10 arranged side by side in the left-right direction and a seat fixing floor 20 to which the seats 10 are fixed. The control unit 50 that controls the roll direction drive device 30 that tilts the seat fixing floor 20 in the roll direction and the pitch direction drive device 40 that tilts the seat fixing floor 20 in the pitch direction is the seat fixing floor when the vehicle 100 is turned left and right. The roll direction drive device 30 is controlled so that the 20 is tilted in the turning direction, and the pitch direction drive device 40 is controlled so that the seat fixing floor 20 is tilted forward when the vehicle 100 is accelerated. The pitch direction drive device 40 is controlled so that the seat fixing floor 20 is inclined rearward. [Selection diagram] Fig. 2

Description

The present invention relates to a vehicle seat tilting device mounted on an autonomous driving vehicle or the like.

In an autonomous vehicle that performs driving operations such as accelerator / brake and steering operations on behalf of the vehicle at all times or temporarily, there may be a time when the occupant is not involved in the driving of the vehicle at all. In the case of so-called automatic driving in which the occupant is not involved in the driving of the vehicle at all, the occupant is less aware of the condition of the vehicle and the condition of the environment outside the vehicle. Therefore, during automatic driving, the occupant cannot predict the change in vehicle behavior caused by the braking operation, the rolling snake operation, or the like, and the body is likely to be greatly shaken by the inertial force generated by the change in vehicle behavior. As a result, there is a problem that the riding comfort of the self-driving vehicle is lowered.

Therefore, for example, Patent Document 1 discloses a vehicle seat that improves the riding comfort of the vehicle when turning left and right. The vehicle seat described in Patent Document 1 suppresses an increase in the amplitude of the seat body due to torsional deformation of the vehicle body when the vehicle is running by connecting the seat so as to be tiltable to the left and right with respect to the floor portion. However, it improves the riding comfort of the vehicle when turning left and right.

Japanese Unexamined Patent Publication No. 2009-23510

However, the vehicle seats described in Patent Document 1 are installed on both the left and right sides in the cabin via the center line in the vehicle width direction of the vehicle body, and each vehicle seat is independently left and right with respect to the floor portion. Tilt. Therefore, for example, when a center console or the like protruding upward from the floor portion is arranged between the vehicle seats arranged side by side, if the vehicle seat tilts significantly to the left or right with respect to the floor portion, it interferes with the center console or the like. Therefore, there is a problem that the vehicle seat cannot be tilted significantly. Further, in order to greatly incline the vehicle seats, the vehicle seats arranged side by side must be arranged at a distance of a predetermined distance or more from the center console or the like, which reduces the comfortability in the left-right direction in the cabin. There was a problem of doing it.

The present invention provides a vehicle seat tilting device that can tilt the seat more greatly with a simple structure and can improve the comfort in the left-right direction in the cabin.

The present invention includes a plurality of seats for occupant seating arranged side by side in the cabin of a vehicle.
A seat fixing floor provided on the floor portion of the cabin and to which the plurality of seats are fixed, and a seat fixing floor.
A roll direction drive device that tilts the seat fixing floor in the roll direction,
A pitch direction drive device that tilts the seat fixing floor in the pitch direction,
A vehicle seat tilting device including a roll direction drive device and a control unit that controls the pitch direction drive device.
The control unit
When the vehicle turns left and right, the roll direction drive device is controlled so that the seat fixing floor tilts in the turning direction with respect to the floor surface of the floor portion.
When the vehicle is accelerated, the pitch direction drive device is controlled so that the seat fixing floor tilts forward with respect to the floor surface of the floor portion.
The pitch direction drive device is controlled so that the seat fixing floor tilts rearward with respect to the floor surface of the floor portion when the vehicle decelerates.

According to the present invention, a plurality of seats arranged side by side in the left-right direction can be tilted by tilting one seat fixing floor, so that the seats can be tilted more greatly with a simple structure. Further, since a plurality of seats arranged side by side in the left-right direction can be arranged close to each other in the left-right direction, the comfortability in the left-right direction in the cabin can be improved.

It is a top view of the cabin in the vehicle which installed the vehicle seat tilting device of one Embodiment of this invention. It is a front view of the vehicle seat tilting device and the front seat shown in FIG. 1. It is a side view of the vehicle seat tilting device and the front seat shown in FIG. 1. It is a partial front view of the front seat of the vehicle seat tilting device shown in FIG. 1. It is a partial plan view of the vehicle seat tilting device shown in FIG. 1 and the front seat on the right side. It is a bottom view of FIG. It is a front view of the vehicle seat tilting device and the rear seat shown in FIG. 1. It is a side view of the vehicle seat tilting device and the rear seat shown in FIG. 1. It is a partial front view of the rear seat of the vehicle seat tilting device shown in FIG. FIG. 3 is a partial plan view of the vehicle seat tilting device and the rear seats shown in FIG. It is a bottom view of FIG. It is a top view of the vehicle cabin when the occupant is seated in the front seat shown in FIG. 1 toward the rear.

Hereinafter, an embodiment of the vehicle seat tilting device of the present invention will be described with reference to the accompanying drawings. In the following description, front / rear, left / right, and up / down are described according to the direction seen from the occupant of the vehicle, and in the drawing, the front is Fr, the rear is Re, the left is L, the right is R, and the upper is U. , The lower part is shown as D, the pitch direction is shown as Pi, and the roll direction is shown as Ro. The left-right direction is also referred to as the vehicle width direction.

<Overall structure of vehicle seat tilting device>
As shown in FIGS. 1, 2 and 7, the vehicle seat tilting device 1 is provided in the cabin 110 of the vehicle 100. The vehicle 100 is capable of automatic driving on behalf of driving operations such as accelerator braking and steering operation by the occupant. Further, the vehicle 100 can also be manually driven by the driving operation of the occupant.

The vehicle seat tilting device 1 is provided on a plurality of seats 10 for occupant seating arranged side by side in the cabin 110 of the vehicle 100 in the left-right direction, that is, in the vehicle width direction, and a plurality of seats 111 on the floor portion 111 of the cabin 110. A seat fixing floor 20 to which the seat 10 is fixed, a roll direction driving device 30 that tilts the seat fixing floor 20 in the roll direction, a pitch direction driving device 40 that tilts the seat fixing floor 20 in the pitch direction, and a roll direction driving device. 30 and a control unit 50 for controlling the pitch direction drive device 40 are provided.

The seat 10 is composed of two front seats 11 arranged side by side in the cabin 110 of the vehicle and two rear seats 12 arranged side by side behind the front seat 11. It is composed. A central seat 13 is provided between the left and right rear seats 12 (see FIG. 7).

The seat fixing floor 20 includes a pitch direction tilting floor 21 that tilts in the pitch direction and a roll direction tilting floor 22 that tilts in the roll direction. The pitch-direction tilting floor 21 has a substantially rectangular shape, and the roll-direction tilting floor 22 is provided so as to surround the outer periphery of the pitch-direction tilting floor 21 when viewed from above. The seat 10 is fixed to the pitch-oriented tilting floor 21.

In the present embodiment, the seat fixing floor 20 includes a front seat fixing floor 20A to which the front seat 11 is fixed and a rear seat fixing floor 20B to which the rear seat 12 is fixed.

The front seat fixed floor 20A includes a front seat pitch direction tilting floor 21A that tilts in the pitch direction and a front seat roll direction tilting floor 22A that tilts in the roll direction. The front seat pitch direction tilt floor 21A has a substantially rectangular shape, and the front seat roll direction tilt floor 22A is provided so as to surround the outer periphery of the front seat pitch direction tilt floor 21A when viewed from above. The two front seats 11 arranged side by side in the left-right direction are fixed to the front seat pitch direction tilting floor 21A.

The rear seat fixed floor 20B includes a rear seat pitch direction tilting floor 21B that tilts in the pitch direction and a rear seat roll direction tilting floor 22B that tilts in the roll direction. The rear seat pitch direction tilt floor 21B has a substantially rectangular shape, and the rear seat roll direction tilt floor 22B is provided so as to surround the outer periphery of the rear seat pitch direction tilt floor 21B when viewed from above. The rear seat 12 is fixed to the rear seat pitch direction tilting floor 21B.

The roll direction drive device 30 includes a front seat roll direction drive device 30A that tilts the front seat fixed floor 20A in the roll direction, and a rear seat roll direction drive device 30B that tilts the rear seat fixed floor 20B in the roll direction. Have.

The pitch direction drive device 40 includes a front seat pitch direction drive device 40A that tilts the front seat fixed floor 20A in the pitch direction, and a rear seat pitch direction drive device 40B that tilts the rear seat fixed floor 20B in the pitch direction. Have.

<Tilt of the front seat fixed floor>
Next, a mechanism for tilting the front seat fixing floor 20A will be described with reference to FIGS. 2 to 6.

As shown in FIG. 2, the front seat roll direction tilting floor 22A is axially centered on the front seat roll direction tilting floor 22A in the left-right direction and above the floor surface 111a of the floor portion 111 in the vertical direction. It is fixed to the front seat roll direction rotation shaft 60A (roll direction rotation shaft 60) that extends in the front-rear direction.

As shown in FIG. 3, the front seat pitch direction tilt floor 21A is axially supported by the front seat roll direction tilt floor 22A at substantially the same position as the rear end portion 21a of the front seat pitch direction tilt floor 21A in the front-rear direction. It is fixed to the front seat pitch direction rotation shaft 70A (pitch direction rotation shaft 70) extending in the direction. In the present embodiment, the front seat pitch direction rotation shaft 70A (pitch direction rotation shaft 70) is arranged behind the front seat seat 11 and below the floor surface of the front seat roll direction tilt floor 22A.

As shown in FIGS. 3 and 5, the front seat pitch direction drive device 40A is attached to the front seat roll direction tilt floor 22A. The front seat pitch direction drive device 40A includes a servomotor 41A, a worm gear mechanism 42A, and a ball screw mechanism 43A. The front seat pitch direction drive device 40A transmits the forward / reverse rotation driving force of the servomotor 41A to the front seat pitch direction tilt floor 21A via the worm gear mechanism 42A and the ball screw mechanism 43A, thereby transmitting the front seat pitch direction tilt floor. 21A is tilted in the pitch direction. In the present embodiment, the front seat pitch direction tilting floor 21A has a lever member 23A extending downward from the front end portion in an arc shape. The lever member 23A of the front seat pitch direction tilting floor 21A is engaged with the nut member 44A of the ball screw mechanism 43A. Then, the lever member 23A of the front seat pitch direction tilting floor 21A is driven in the vertical direction together with the nut member 44A of the ball screw mechanism 43A. Therefore, the front seat pitch direction tilting floor 21A is tilted in the pitch direction about the front seat pitch direction rotation shaft 70A by the front seat pitch direction drive device 40A, as shown by the arrow A2 in FIG.

As shown in FIGS. 4 and 6, the front seat roll direction drive device 30A is attached to the floor portion 111. The front seat roll direction drive device 30A includes a servomotor 31A, a worm gear mechanism 32A, and a ball screw mechanism 33A. The front seat roll direction drive device 30A transmits the forward / reverse rotation driving force of the servomotor 31A to the front seat roll direction tilt floor 22A via the worm gear mechanism 32A and the ball screw mechanism 33A, thereby transmitting the front seat roll direction tilt floor. The 22A is tilted in the roll direction. In the present embodiment, the front seat roll direction tilting floor 22A is engaged with the nut member 34A of the ball screw mechanism 33A. Then, the front seat roll direction tilting floor 22A is driven in the left-right direction together with the nut member 34A of the ball screw mechanism 33A. Therefore, the front seat roll direction tilting floor 22A is tilted in the roll direction about the front seat roll direction rotation shaft 60A by the front seat roll direction drive device 30A, as shown by arrows A1 in FIGS. 2 and 4.

At this time, the front seat pitch direction tilt floor 21A is fixed to the front seat pitch direction rotation shaft 70A (pitch direction rotation shaft 70) extending in the left-right direction, which is pivotally supported by the front seat roll direction tilt floor 22A, and is fixed to the front seat. Since the pitch direction drive device 40A is attached to the front seat roll direction tilt floor 22A, when the front seat roll direction drive device 30A tilts in the roll direction, the front seat pitch direction tilt floor 21A also has the front seat roll direction drive device. It tilts in the roll direction integrally with 30A. Therefore, the front seat roll direction driving device 30A integrally tilts the front seat roll direction tilting floor 22A and the front seat pitch direction tilting floor 21A in the roll direction. By driving the front seat pitch direction drive device 40A and the front seat roll direction drive device 30A in this way, the front seat pitch direction tilt floor 21A tilts in the pitch direction and the roll direction. As a result, the two front seats 11 fixed to the front seat pitch direction tilting floor 21A and arranged side by side in the left-right direction tilt in the pitch direction and the roll direction together with the front seat pitch direction tilting floor 21A.

In this way, by tilting one front seat fixed floor 20A, a plurality of front seats 11 arranged side by side in the left-right direction can be tilted. Therefore, even when a center console or the like projecting upward from the floor portion 111 is arranged between the plurality of front seats 11 arranged side by side in the left-right direction, the front seat fixed floor 20A tilts. Therefore, the center console and the like can also be tilted together with the plurality of front seats 11 arranged side by side in the left-right direction. Therefore, when the plurality of front seats 11 arranged side by side in the left-right direction are tilted, there is no possibility of interfering with the center console or the like. As a result, the front seats 11 can be greatly tilted, and in order to greatly tilt the front seats 11, each of the front seats 11 arranged side by side in the left-right direction is placed at a predetermined distance or more from the center console or the like. Since it is not necessary to arrange them apart from each other and they can be arranged close to each other in the left-right direction, the comfortability in the left-right direction in the cabin 110 can be improved.

Further, in the front seat fixed floor 20A, the front seat roll direction tilting floor 22A and the front seat pitch direction tilting floor 21A are integrally tilted in the roll direction by the front seat roll direction driving device 30A, and the front seat pitch direction driving device 40A. As a result, the front seat pitch direction tilting floor 21A tilts in the pitch direction, so that the front seat fixed floor 20A can be tilted in the pitch direction and the roll direction with a simple structure.

Further, the front seat roll direction tilting floor 22A tilts in the roll direction about the front seat roll direction rotation shaft 60A. The front seat roll direction rotation shaft 60A is pivotally supported by the floor portion 111 in the horizontal direction at the substantially center of the front seat roll direction tilting floor 22A and above the floor surface 111a of the floor portion 111 in the vertical direction. When the front seat fixing floor 20A tilts in the roll direction and one end of the front seat fixing floor 20A in the left-right direction is displaced downward, the one end is further toward the center side in the vehicle width direction. It shifts downward while shifting. For example, as shown in FIG. 4, when the front seat fixed floor 20A is tilted in the roll direction and the right end portion of the front seat fixed floor 20A is displaced downward, the front seat roll direction rotation shaft 60A is the floor portion 111. Since it is located above the floor surface 111a, the front seat roll direction rotation shaft 60A is substantially the same position as the floor surface 111a in the vertical direction, or the front seat roll direction rotation shaft 60A is below the floor surface 111a. The right end portion of the front seat fixed floor 20A is displaced downward while being displaced toward the center side in the vehicle width direction as compared with the case where the front seat fixed floor 20A is located. As a result, when the front seat fixing floor 20A is tilted in the roll direction and one end of the front seat fixing floor 20A in the left-right direction is tilted downward, the front seat fixing floor 20A is fixed to the front seat fixing floor 20A. It is possible to reduce the displacement of the upper end 10a of the front seat 11 to the outside in the vehicle width direction.

<Tilt of the rear seat fixed floor>
Next, a mechanism for tilting the rear seat fixed floor 20B will be described with reference to FIGS. 7 to 11.

As shown in FIG. 7, the rear seat roll direction tilting floor 22B is axially centered on the rear seat roll direction tilting floor 22B in the left-right direction and above the floor surface 111a of the floor portion 111 in the vertical direction. It is fixed to the rear seat roll direction rotation shaft 60B (roll direction rotation shaft 60) that extends in the front-rear direction.

As shown in FIG. 8, the rear seat pitch direction tilt floor 21B is substantially the same position as the front end portion 21b of the rear seat pitch direction tilt floor 21B in the front-rear direction, and is axially supported by the rear seat roll direction tilt floor 22B in the left-right direction. It is fixed to the rear seat pitch direction rotation shaft 70B (pitch direction rotation shaft 70) extending to. In the present embodiment, the rear seat pitch direction rotation shaft 70B (pitch direction rotation shaft 70) is arranged in front of the rear seat seat 12 and below the floor surface of the rear seat roll direction tilt floor 22B.

As shown in FIGS. 8 and 10, the rear seat pitch direction drive device 40B is attached to the rear seat roll direction tilt floor 22B. The rear seat pitch direction drive device 40B includes a servomotor 41B, a worm gear mechanism 42B, and a ball screw mechanism 43B. The rear seat pitch direction drive device 40B transmits the forward / reverse rotation driving force of the servomotor 41B to the rear seat pitch direction tilt floor 21B via the worm gear mechanism 42B and the ball screw mechanism 43B, thereby transmitting the rear seat pitch direction tilt floor. The 21B is tilted in the pitch direction. In the present embodiment, the rear seat pitch direction tilting floor 21B has a lever member 23B extending downward from the rear end portion in an arc shape. The lever member 23B of the rear seat pitch direction tilting floor 21B is engaged with the nut member 44B of the ball screw mechanism 43B. Then, the lever member 23B of the rear seat pitch direction tilting floor 21B is driven in the vertical direction together with the nut member 44B of the ball screw mechanism 43B. Therefore, the rear seat pitch direction tilting floor 21B is tilted in the pitch direction about the rear seat pitch direction rotation shaft 70B by the rear seat pitch direction drive device 40B, as shown by the arrow B2 in FIG.

As shown in FIGS. 9 and 11, the rear seat roll direction drive device 30B is attached to the floor portion 111. The rear seat roll direction drive device 30B includes a servomotor 31B, a worm gear mechanism 32B, and a ball screw mechanism 33B. The rear seat roll direction drive device 30B transmits the forward / reverse rotation driving force of the servomotor 31B to the rear seat roll direction tilt floor 22B via the worm gear mechanism 32B and the ball screw mechanism 33B, thereby transmitting the rear seat roll direction tilt floor. The 22B is tilted in the roll direction. In the present embodiment, the rear seat roll direction tilting floor 22B is engaged with the nut member 34B of the ball screw mechanism 33B. Then, the rear seat roll direction tilting floor 22B is driven in the left-right direction together with the nut member 34B of the ball screw mechanism 33B. Therefore, the rear seat roll direction tilting floor 22B is tilted in the roll direction about the rear seat roll direction rotation shaft 60B by the rear seat roll direction drive device 30B, as shown by the arrows B1 in FIGS. 7 and 9.

At this time, the rear seat pitch direction tilt floor 21B is fixed to the rear seat pitch direction rotation axis 70B (pitch direction rotation axis 70) extending in the left-right direction, which is pivotally supported by the rear seat roll direction tilt floor 22B, and is fixed to the rear seats. Since the pitch direction drive device 40B is attached to the rear seat roll direction tilt floor 22B, when the rear seat roll direction drive device 30B tilts in the roll direction, the rear seat pitch direction tilt floor 21B also causes the rear seat roll direction drive device. It tilts in the roll direction integrally with 30B. Therefore, the rear seat roll direction driving device 30B integrally tilts the rear seat roll direction tilting floor 22B and the rear seat pitch direction tilting floor 21B in the roll direction. By driving the rear seat pitch direction drive device 40B and the rear seat roll direction drive device 30B in this way, the rear seat pitch direction tilt floor 21B tilts in the pitch direction and the roll direction. As a result, the two rear seats 12 fixed to the rear seat pitch direction tilting floor 21B and arranged side by side in the left-right direction tilt in the pitch direction and the roll direction together with the rear seat pitch direction tilting floor 21B.

In this way, by tilting one rear seat fixed floor 20B, a plurality of rear seats 12 arranged side by side in the left-right direction can be tilted. Therefore, even if the central seat 13 is arranged between the plurality of rear seats 12 arranged side by side in the left-right direction, the rear seat fixed floor 20B tilts, so that the center seat 13 also moves in the left-right direction. It can be tilted together with a plurality of rear seats 12 arranged side by side. Therefore, when the plurality of rear seats 12 arranged side by side in the left-right direction are tilted, there is no possibility of interfering with the central seat 13. As a result, the rear seats 12 can be greatly tilted, and in order to greatly tilt the rear seats 12, each of the rear seats 12 arranged side by side in the left-right direction is separated from the central seat 13 by a predetermined distance or more. Since it is not necessary to arrange them apart from each other and they can be arranged close to each other in the left-right direction, the comfortability in the left-right direction in the cabin 110 can be improved.

Further, in the rear seat fixed floor 20B, the rear seat roll direction tilting floor 22B and the rear seat pitch direction tilting floor 21B are integrally tilted in the roll direction by the rear seat roll direction driving device 30B, and the rear seat pitch direction driving device 40B. As a result, the rear seat pitch direction tilting floor 21B tilts in the pitch direction, so that the front seat fixed floor 20A can be tilted in the pitch direction and the roll direction with a simple structure.

Further, the rear seat roll direction tilting floor 22B tilts in the roll direction about the rear seat roll direction rotation shaft 60B. The rear seat roll direction rotation shaft 60B is pivotally supported by the floor portion 111 in the left-right direction at substantially the center of the rear seat roll direction tilting floor 22B and above the floor surface 111a of the floor portion 111 in the vertical direction. When the rear seat fixed floor 20B tilts in the roll direction and one end of the rear seat fixed floor 20B in the left-right direction is displaced downward, the one end is further toward the center side in the vehicle width direction. It shifts downward while shifting. For example, as shown in FIG. 9, when the rear seat fixed floor 20B is tilted in the roll direction and the right end portion of the rear seat fixed floor 20B is displaced downward, the rear seat roll direction rotation shaft 60B is the floor portion 111. Since it is located above the floor surface 111a, the rear seat roll direction rotation shaft 60B is substantially the same position as the floor surface 111a in the vertical direction, or the rear seat roll direction rotation shaft 60B is below the floor surface 111a. The right end of the rear seat fixed floor 20B is displaced downward while being displaced toward the center in the vehicle width direction as compared with the case where the rear seat is located at. As a result, when the rear seat fixing floor 20B is tilted in the roll direction and one end of the rear seat fixing floor 20B in the left-right direction is tilted downward, the rear seat fixing floor 20B is fixed to the rear seat fixing floor 20B. It is possible to reduce the displacement of the upper end 10a of the rear seat 12 to the outside in the vehicle width direction.

As described above, the seat 10 has a plurality of front seats 11 arranged side by side in the cabin 110 of the vehicle, and rear seats 12 arranged behind the front seats 11. The seat fixing floor 20 has a front seat fixing floor 20A to which the front seat 11 is fixed and a rear seat fixing floor 20B to which the rear seat 12 is fixed, and the seat fixing floor 20 is in front. Since it is divided into seats and rear seats, the seat fixing floor 20 can be miniaturized, and the roll direction drive device 30 and the pitch direction drive device 40 can be miniaturized. Further, since the degree of freedom of the position where the roll direction drive device 30 and the pitch direction drive device 40 are arranged is improved, the roll direction drive device 30 and the pitch direction drive device 40 can be arranged by efficiently utilizing the space.

Further, the front seat roll direction drive device 30A and the front seat pitch direction drive device 40A for driving the front seat fixed floor 20A can be arranged in front of the cabin 110, and the rear seat roll direction drive device for driving the rear seat fixed floor 20B can be arranged. Since the 30B and the rear seat pitch direction drive device 40B can be arranged behind the cabin 110, the sound and vibration generated when driving one of the front seat fixed floor 20A and the rear seat fixed floor 20B is transmitted to the other. Can be reduced. Further, the cabin 110 can be enlarged, and the habitability in the cabin 110 can be improved.

<Drive control of seat fixed floor>
The control unit 50 has a front seat roll direction drive device 30A and a rear seat so that the front seat fixed floor 20A and the rear seat fixed floor 20B are inclined in the turning direction with respect to the floor portion 111 when the vehicle 100 is turned left and right. The roll direction drive device 30B is controlled. Specifically, when the vehicle 100 turns to the left, the control unit 50 has the front seat fixed floor 20A and the rear seat fixed floor 20B with the left end portion downward and the right end portion upward with respect to the floor portion 111. The front seat roll direction drive device 30A and the rear seat roll direction drive device 30B are controlled so as to incline in such a manner, and when the vehicle 100 turns to the right, the front seat fixed floor 20A and the rear seat fixed floor 20B are on the floor. The front seat roll direction drive device 30A and the rear seat roll direction drive device 30B are controlled so as to incline so that the right end portion is downward and the left end portion is upward with respect to 111.

The control unit 50 has a front seat pitch direction drive device 40A and a rear seat pitch direction so that the front seat fixed floor 20A and the rear seat fixed floor 20B are inclined forward with respect to the floor portion 111 when the vehicle 100 is accelerated. The front seat pitch direction drive device 40A and the rear seats are controlled so that the front seat fixed floor 20A and the rear seat fixed floor 20B are inclined rearward with respect to the floor portion 111 when the vehicle 100 is decelerated by controlling the drive device 40B. The pitch direction drive device 40B is controlled. Specifically, when the vehicle 100 is accelerated, the control unit 50 arranges that the front seat fixed floor 20A and the rear seat fixed floor 20B have the front end portion downward and the rear end portion upward with respect to the floor portion 111. The front seat pitch direction drive device 40A and the rear seat pitch direction drive device 40B are controlled so as to incline to, and when the vehicle 100 is decelerated, the front seat fixed floor 20A and the rear seat fixed floor 20B move with respect to the floor portion 111. The front seat pitch direction drive device 40A and the rear seat pitch direction drive device 40B are controlled so that the rear end portion is inclined downward and the front end portion is inclined upward.

As a result, when the vehicle 100 turns left and right, the seat fixed floor 20 (front seat fixed floor 20A and rear seat fixed floor 20B) is inclined in the turning direction with respect to the floor surface 111a of the floor portion 111, and the vehicle 100 When accelerating, the seat fixed floor 20 (front seat fixed floor 20A and rear seat fixed floor 20B) inclines forward with respect to the floor surface 111a of the floor portion 111, and when the vehicle 100 decelerates, the seat fixed floor 20 (front seat fixed floor 20A and rear seat fixed floor 20B) Since the front seat fixed floor 20A and the rear seat fixed floor 20B) are inclined rearward with respect to the floor surface 111a of the floor portion 111, they are fixed to the seat fixed floor 20 when the vehicle 100 turns left and right and when accelerating or decelerating. The plurality of seats 10 (front seat 11 and rear seat 12) are inclined in a direction that cancels the inertial force generated by the occupant seated on the seat 10. As a result, it is possible to reduce the swing of the occupant in the front-rear direction and the left-right direction with respect to the seat 10, and it is possible to improve the riding comfort of the occupant seated in the seat 10.

Further, since the front seat pitch direction rotation shaft 70A and the rear seat pitch direction rotation shaft 70B can be arranged at close positions, the front seat fixed floor 20A and the rear seat fixed floor 20B are tilted in the pitch direction. Even in this case, the step generated between the front seat fixed floor 20A and the rear seat fixed floor 20B can be reduced, and the comfortability in the cabin 110 can be improved. Further, since the front seat pitch direction rotation shaft 70A and the rear seat pitch direction rotation shaft 70B can both be arranged near the center of the vehicle 100 in the front-rear direction, the front seat fixed floor 20A can be arranged during acceleration / deceleration of the vehicle 100. And when the rear seat fixed floor 20B is tilted in the pitch direction, the discomfort given to the occupants can be reduced.

When the vehicle 100 is in automatic driving, the control unit 50 includes automatic driving control plan information which is information on how the vehicle 100 is planned to be controlled in the future, and how the vehicle 100 behaves in the future by recognizing the outside world. The roll direction drive device 30 and the pitch direction drive device 40 are feed-forward controlled based on the vehicle behavior estimation information which is the information estimated to be performed.

As a result, it is possible to prevent the seat fixing floor 20 from tilting with respect to the vehicle behavior with a time lag. Therefore, it is possible to reduce the front-rear direction and the left-right direction swing that occurs in the occupant seated on the seat 10 while preventing discomfort and motion sickness caused by the seat 10 tilting with respect to the vehicle behavior.

Further, the control unit 50 is a roll direction drive device 30 and a pitch direction drive device so that the seat fixing floor 20 does not tilt with respect to the floor portion 111 when the vehicle 100 is manually operated by an occupant. 40 is controlled.

As a result, the occupant who drives the vehicle 100 can accurately grasp the behavior of the vehicle 100 and can perform a safe driving operation.

<Seat suspension device>
Each seat 10 of the front seat 11 and the rear seat 12 is fixed to the seat fixing floor 20 via the seat suspension device 80. In the present embodiment, the seat suspension device 80 is an air spring capable of absorbing vibration and reducing the vibration transmitted to the seat 10 and adjusting the height of the seat 10 in the cabin 110. The air spring is, for example, a diaphragm type that can support thrust from the side, and includes an air pressure pump (not shown), an air pressure adjusting valve, an auxiliary air chamber, a variable throttle mechanism, a seat height detection sensor, and the like.

In the prior art, each seat is tilted individually by a seat tilting device provided under the seat. Therefore, since the seat tilting device is provided under the seat, it is difficult to install the seat suspension device 80 under the seat due to the space under the seat.

In the present embodiment, the roll direction drive device 30 and the pitch direction drive device 40 can be provided at positions deviated from the central portion of the seat surface of the seat 10 when viewed from the vertical direction, so that the seat suspension device 80 can be provided under the seat 10. Can be easily installed.

Further, according to the present embodiment, the inertial forces in the front-rear direction and the left-right direction generated in the occupant seated on the seat 10 are canceled by the tilt of the seat fixing floor 20 during the left-right turning and acceleration / deceleration of the vehicle 100. The load generated on the occupant is integrated in the vertical direction. As a result, the seat suspension device 80, which is an air spring, can effectively absorb vibrations including high-frequency vibrations from the road surface, so that the riding comfort of the vehicle 100 during left-right turning and acceleration / deceleration is improved.

Further, since the seat suspension device 80 is an air spring, the height of the seat 10 in the cabin 110 can be adjusted by the air spring. As a result, the height of the seat 10 in the cabin 110 can be adjusted to the target position without being affected by the magnitude of the swing in the front-rear direction and the left-right direction that occurs in the occupant seated on the seat 10.

<Leg rest and foot rest>
The seat 10 is provided with a leg rest 15 and a foot rest 16. When the vehicle 100 is automatically driving, the leg rest 15 is arranged at a position where the calf of the occupant seated on the seat 10 can be placed, and the footrest 16 can place the sole of the occupant seated on the seat 10. It is placed in a position where it can be (see the solid line in FIGS. 3 and 8). On the other hand, when the vehicle 100 is driven by the operation of an occupant, the leg rest 15 and the foot rest 16 are housed in the lower part of the seat 10 (see the broken lines in FIGS. 3 and 8).

As a result, when the vehicle 100 is automatically driving, the leg rest 15 and the foot rest 16 can alleviate the burden on the legs and hips of the occupant seated on the seat 10. On the other hand, when the vehicle 100 is driven by the operation of an occupant, the leg rest 15 and the foot rest 16 are housed in the lower part of the seat 10, so that the leg rest 15 and the foot rest 16 do not interfere with the driving operation. Can be done.

<Rotating counter seat>
As shown in FIGS. 2 to 6, the front seat 11 is fixed to the front seat fixing floor 20A via the seat rotation mechanism 81. The front seat 11 can be rotated on the front seat fixed floor 20A by the seat rotation mechanism 81, and a state in which the occupant sits forward and a state in which the occupant sits backward can be selected. It is possible.

Therefore, as shown in FIG. 12, the front seat 11 allows the occupant to sit backward when the vehicle 100 is automatically driven or the like. By setting the front seat 11 so that the occupant sits backward, the occupant seated in the front seat 11 and the occupant seated in the rear seat 12 face each other in the cabin 110. Can be done.

Although the embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and can be appropriately modified, improved, and the like.

For example, in the present embodiment, an example in which the vehicle seat tilting device 1 is applied to a vehicle 100 capable of both automatic driving and manual driving is shown, but the vehicle seat tilting device 1 is applied to a vehicle capable of only automatic driving. It may be applied, or the vehicle seat tilting device 1 may be applied to a vehicle capable of only manual driving.

Further, for example, in the present embodiment, the roll direction drive device 30 and the pitch direction drive device 40 include a servomotor, a worm gear mechanism, and a ball screw mechanism, but include other mechanisms such as a hydraulic mechanism, a wire mechanism, and the like. May be.

Further, for example, in the present embodiment, the seat suspension device 80 is assumed to be an air spring, but the seat suspension device 80 is not limited to the air spring, and may be a spring device by magnetic force or actively controlled. It may be an electric or hydraulic actuator that can control vibration.

In addition, at least the following matters are described in this specification. The components and the like corresponding to the above-described embodiments are shown in parentheses, but the present invention is not limited thereto.

(1) A plurality of seats (seats 10) for occupant seating arranged side by side in the cabin (cabin 110) of the vehicle (vehicle 100).
A seat fixing floor (seat fixing floor 20) provided on the floor portion (floor portion 111) of the cabin and to which the plurality of seats are fixed,
A roll direction drive device (roll direction drive device 30) that tilts the seat fixing floor in the roll direction, and
A pitch direction drive device (pitch direction drive device 40) that tilts the seat fixing floor in the pitch direction, and
A vehicle seat tilting device (vehicle seat tilting device 1) including a control unit (control unit 50) that controls the roll direction driving device and the pitch direction driving device.
The control unit
When the vehicle turns left and right, the roll direction drive device is controlled so that the seat fixing floor is inclined in the turning direction with respect to the floor surface (floor surface 111a) of the floor portion.
When the vehicle is accelerated, the pitch direction drive device is controlled so that the seat fixing floor tilts forward with respect to the floor surface of the floor portion.
A vehicle seat tilting device that controls the pitch direction drive device so that the seat fixing floor tilts rearward with respect to the floor surface of the floor portion when the vehicle decelerates.

According to (1), when the vehicle turns left and right, the seat fixed floor tilts in the turning direction with respect to the floor surface of the floor portion, and when the vehicle accelerates, the seat fixed floor tilts with respect to the floor surface of the floor portion. Since the seat fixed floor tilts forward with respect to the floor surface of the floor when the vehicle decelerates, a plurality of seats fixed to the seat fixed floor can be used when the vehicle turns left and right and when accelerating or decelerating. , Tilt in the direction opposite to the direction of the inertial force generated by the occupant seated on the seat. As a result, the swing in the front-rear direction and the left-right direction caused by the occupant seated on the seat can be reduced, and the riding comfort of the occupant seated on the seat can be improved.
Further, by tilting one seat fixing floor, a plurality of seats arranged side by side in the left-right direction can be tilted, so that the seats can be tilted more greatly with a simple structure. As a result, with a simple structure, it is possible to further reduce the front-rear and left-right swings that occur in the occupant seated on the seat. Further, since a plurality of seats arranged side by side in the left-right direction can be arranged close to each other in the left-right direction, the comfortability in the left-right direction in the cabin can be improved.

(2) The vehicle seat tilting device according to (1).
The seat fixing floor has a pitch-direction tilting floor (pitch-direction tilting floor 21) that tilts in the pitch direction and a roll-direction tilting floor (roll-direction tilting floor 22) that tilts in the roll direction.
When viewed from above, the roll direction tilting floor is provided so as to surround the outer periphery of the pitch direction tilting floor.
The seat is fixed to the pitch-oriented tilting floor.
The roll-direction tilting floor is a roll-direction rotating shaft that extends in the front-rear direction, which is pivotally supported by the floor portion in the horizontal direction at substantially the center of the roll-direction tilting floor and above the floor surface of the floor portion in the vertical direction. It is fixed to (Rotating shaft 60 in the roll direction) and
The pitch direction tilt floor is substantially the same as the front end portion or the rear end portion of the pitch direction tilt floor in the front-rear direction, and is pivotally supported by the roll direction tilt floor and extends in the left-right direction (pitch direction rotation). It is fixed to the shaft 70) and
By the roll direction drive device, the roll direction tilting floor and the pitch direction tilting floor are integrally tilted in the roll direction about the roll direction rotation axis.
A vehicle seat tilting device in which the pitch-direction tilting floor is tilted in the pitch direction around the pitch-direction rotation axis by the pitch-direction driving device.

According to (2), the seat fixed floor has a pitch-direction tilting floor that tilts in the pitch direction and a roll-direction tilting floor that tilts in the roll direction. When viewed from above, the roll-direction tilting floor has a pitch. It is provided so as to surround the outer periphery of the directional tilting floor, and the roll directional tilting floor and the pitch directional tilting floor are integrally tilted in the roll direction by the roll directional driving device, and the pitch directional tilting floor is pitched by the pitch directional driving device. Since it tilts in the direction, the seat fixing floor can be tilted in the pitch direction and the roll direction with a simple structure.
Further, the roll direction tilting floor is fixed to a roll direction rotation axis extending in the front-rear direction, which is pivotally supported by the floor portion above the floor surface of the floor portion in the vertical direction and substantially at the center of the roll direction tilting floor in the left-right direction. The roll direction drive device integrally tilts the roll direction tilting floor and the pitch direction tilting floor in the roll direction around the roll direction rotation axis, so that the seat fixing floor tilts in the roll direction and the seat fixing floor When one end in the left-right direction is displaced downward, the one end is displaced downward while being displaced toward the center in the vehicle width direction. As a result, when the seat fixing floor is tilted in the roll direction and one end of the seat fixing floor in the left-right direction is tilted downward, the upper end of the seat fixed to the seat fixing floor is outside in the vehicle width direction. It is possible to reduce the displacement to.

(3) The vehicle seat tilting device according to (1) or (2).
The seat is fixed to the seat fixing floor via a seat suspension device (seat suspension device 80).
The seat suspension device is a vehicle seat tilting device which is an air spring capable of absorbing vertical vibration from a road surface and adjusting the height of the seat in the cabin.

According to (3), the inertial force in the front-rear direction and the left-right direction generated in the occupant seated on the seat during left-right turning and acceleration / deceleration of the vehicle is canceled by the tilt of the seat fixing floor, so that the load generated on the occupant It is integrated in the vertical direction. As a result, the suspension device, which is an air spring, can effectively absorb vibrations including high-frequency vibrations from the road surface, so that the riding comfort during left-right turning and acceleration / deceleration of the vehicle is improved.

(4) The vehicle seat tilting device according to any one of (1) to (3).
The vehicle can be driven automatically and
The control unit feed-forward controls the roll direction drive device and the pitch direction drive device based on the automatic driving control plan information at the time of automatic driving of the vehicle and the vehicle behavior estimation information by recognition of the outside world. For seat tilting device.

According to (4), the vehicle can be automatically driven, and the control unit is a roll direction drive device based on the automatic driving control plan information at the time of automatic driving of the vehicle and the vehicle behavior estimation information by recognition of the outside world. And since the pitch direction drive device is fed-forward controlled, it is possible to prevent the seat fixing floor from tilting with respect to the vehicle behavior with a time lag. As a result, it is possible to reduce the anteroposterior and lateral swings that occur in the occupant seated on the seat while preventing discomfort and motion sickness caused by the seat tilting with a time lag with respect to the vehicle behavior.

(5) The vehicle seat tilting device according to any one of (1) to (4).
When the vehicle is operated by the operation of an occupant, the control unit controls the roll direction drive device and the pitch direction drive device so that the seat fixing floor does not tilt with respect to the floor portion. For seat tilting device.

According to (5), when the vehicle is driven by the operation of an occupant, the control unit controls the roll direction drive device and the pitch direction drive device so that the seat fixing floor does not tilt with respect to the floor portion. , The occupant who drives the vehicle can accurately grasp the behavior of the vehicle and can perform a safe driving operation.

(6) The vehicle seat tilting device according to any one of (1) to (5).
The vehicle can be driven automatically and
The seat is provided with a leg rest (leg rest 15) and a foot rest (foot rest 16).
When the vehicle is autonomously driven, the leg rest is arranged at a position where the calf of the occupant seated on the seat can be placed, and the footrest rests the sole of the occupant seated on the seat. Is placed in a position where
A vehicle seat tilting device in which the leg rest and the foot rest are housed under the seat when the vehicle is operated by the operation of the occupant.

According to (6), the vehicle can be driven automatically, and the seat is provided with a leg rest and a foot rest. When the vehicle is automatically driven, the leg rest is the seat of the occupant seated on the seat. The footrest is placed in a position where the calf can be placed, and the footrest is placed in a position where the sole of the occupant seated on the seat can be placed, so that the burden on the feet and waist of the occupant seated on the seat is reduced. be able to. On the other hand, when the vehicle is driven by the operation of an occupant, the leg rest and the foot rest are housed in the lower part of the seat, so that the leg rest and the foot rest do not interfere with the driving operation.

(7) The vehicle seat tilting device according to any one of (1) to (6).
The seat tilting device for a vehicle, in which the seat can be rotated on the seat fixing floor, and a state in which the occupant sits forward and a state in which the occupant sits rearward can be selected.

According to (7), the seat can be rotated on the seat fixed floor, and a state in which the occupant sits forward and a state in which the occupant sits backward can be selected. The occupant can sit backwards during automatic driving.

1 Vehicle seat tilting device 10 Seat 11 Front seat 12 Rear seat seat 15 Leg rest 16 Foot rest 20 Seat fixed floor 21 Pitch direction tilting floor 22 Roll direction tilting floor 30 Roll direction driving device 40 Pitch direction driving device 50 Control unit 60 rolls Directional rotation axis 70 Pitch direction rotation axis 80 Seat suspension device 100 Vehicle 110 Cabin 111 Floor part 111a Floor surface

Claims (7)

Multiple seats for occupant seating arranged side by side in the cabin of the vehicle,
A seat fixing floor provided on the floor portion of the cabin and to which the plurality of seats are fixed, and a seat fixing floor.
A roll direction drive device that tilts the seat fixing floor in the roll direction,
A pitch direction drive device that tilts the seat fixing floor in the pitch direction,
A vehicle seat tilting device including a roll direction drive device and a control unit that controls the pitch direction drive device.
The control unit
When the vehicle turns left and right, the roll direction drive device is controlled so that the seat fixing floor tilts in the turning direction with respect to the floor surface of the floor portion.
When the vehicle is accelerated, the pitch direction drive device is controlled so that the seat fixing floor tilts forward with respect to the floor surface of the floor portion.
A vehicle seat tilting device that controls the pitch direction drive device so that the seat fixing floor tilts rearward with respect to the floor surface of the floor portion when the vehicle decelerates. The vehicle seat tilting device according to claim 1.
The seat fixing floor has a pitch-direction tilting floor that tilts in the pitch direction and a roll-direction tilting floor that tilts in the roll direction.
When viewed from above, the roll direction tilting floor is provided so as to surround the outer periphery of the pitch direction tilting floor.
The seat is fixed to the pitch-oriented tilting floor.
The roll-direction tilting floor is a roll-direction rotating shaft that extends in the front-rear direction, which is pivotally supported by the floor portion in the horizontal direction at substantially the center of the roll-direction tilting floor and above the floor surface of the floor portion in the vertical direction. Is fixed to
The pitch-direction tilting floor is fixed to a pitch-direction rotation axis extending in the left-right direction, which is pivotally supported by the roll-direction tilting floor, at substantially the same position as the front end or rear end of the pitch-direction tilting floor in the front-rear direction. Ori,
By the roll direction drive device, the roll direction tilting floor and the pitch direction tilting floor are integrally tilted in the roll direction about the roll direction rotation axis.
A vehicle seat tilting device in which the pitch-direction tilting floor is tilted in the pitch direction around the pitch-direction rotation axis by the pitch-direction driving device. The vehicle seat tilting device according to claim 1 or 2.
The seat is fixed to the seat fixing floor via a seat suspension device.
The seat suspension device is a vehicle seat tilting device which is an air spring capable of absorbing vertical vibration from a road surface and adjusting the height of the seat in the cabin. The vehicle seat tilting device according to any one of claims 1 to 3.
The vehicle can be driven automatically and
The control unit feed-forward controls the roll direction drive device and the pitch direction drive device based on the automatic driving control plan information at the time of automatic driving of the vehicle and the vehicle behavior estimation information by recognition of the outside world. For seat tilting device. The vehicle seat tilting device according to any one of claims 1 to 4.
When the vehicle is operated by the operation of an occupant, the control unit controls the roll direction drive device and the pitch direction drive device so that the seat fixing floor does not tilt with respect to the floor portion. For seat tilting device. The vehicle seat tilting device according to any one of claims 1 to 5.
The vehicle can be driven automatically and
The seat is provided with a leg rest and a foot rest.
When the vehicle is autonomously driven, the leg rest is arranged at a position where the calf of the occupant seated on the seat can be placed, and the footrest rests the sole of the occupant seated on the seat. Is placed in a position where
A vehicle seat tilting device in which the leg rest and the foot rest are housed under the seat when the vehicle is operated by the operation of the occupant. The vehicle seat tilting device according to any one of claims 1 to 6.
The seat tilting device for a vehicle, in which the seat can be rotated on the seat fixing floor, and a state in which the occupant sits forward and a state in which the occupant sits rearward can be selected.

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