JP7323754B2 - seat unit - Google Patents

Description

The present invention relates to a seat unit provided with a plurality of movable mechanisms for respectively moving a plurality of parts constituting a seat.

A known vehicle seat includes a seat back, a seat cushion, and an ottoman (see Patent Document 1). In such vehicle seats, the postures (positions and orientations) of the seat back, seat cushion, and ottoman are adjustable.

In addition, in the invention described in Patent Document 1, in order to make it easier to get in and out of a vehicle, the seat back is folded forward and the side support portion provided on the side portion of the seat cushion and the front portion are tilted to move up and down. The storage operation of the part is linked.

JP 2015-58811 A

By the way, in some cases, the seat back of the vehicle seat is tilted backward while the person is seated on the vehicle seat, so that the seat is deformed so as to relax the person. On the other hand, in the invention described in Patent Document 1, each part of the seat is moved (rotated) so that the movement of the seat back is completed after the retracting operation of the side support part and the tilt part is completed, and the seat is deformed. took a long time to complete.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object thereof is to provide a seat unit capable of shortening the time required to complete the transition from the current state to the target state of a plurality of movable parts that constitute a seat. to provide.

According to the seat unit of the present invention, the occupant support portion that supports the occupant, the plurality of movable mechanisms that respectively move the plurality of portions that constitute the occupant support portion, and the plurality of movable mechanisms are each moved. and a control unit for controlling the operation of each of the plurality of movable mechanisms, wherein the control unit transitions each of the plurality of movable mechanisms from the current state to the target state when causing each of the plurality of movable mechanisms to transition from the current state to the target state. and a time required for each of the plurality of movable mechanisms to transition from the current state to the target state is calculated from the amount of movement, and the plurality of movable mechanisms determine the time required for transition from the current state to the target state . a first movable mechanism having a long length, and the controller selects the first movable mechanism among the plurality of movable mechanisms based on the required time for transitioning each of the plurality of movable mechanisms from the current state to the target state; The movement start timing of the movable mechanisms other than the mechanism is later than the movement start timing of the first movable mechanism, and the transition is completed before the transition of the first movable mechanism is completed. A transition start timing for each of the movable mechanisms is set , and by the time the first movable mechanism completes the transition from the current state to the target state, the movable mechanisms other than the first movable mechanism among the plurality of movable mechanisms Resolved by completing the migration.
According to the above seat unit, it is possible to complete the transition of the other movable mechanisms by the time the first movable mechanism, which requires the longest transition time among the plurality of movable mechanisms, completes the state transition. As a result, it is possible to shorten the time required to complete the transition from the current state to the target state of the plurality of movable parts that constitute the seat.
Moreover, by doing so, the timing of starting the transition of the plurality of movable mechanisms can be set with high accuracy.

In the above-described seat unit, the control section preferably sets substantially the same timing for each of the plurality of movable mechanisms to complete the transition from the current state to the target state.
By doing so, it is possible to clearly inform the seated person that the deformation of the seat has been completed.

In the seat unit described above, the plurality of movable mechanisms may have a slide mechanism that slides the occupant support portion.
By doing so, it is possible to appropriately control the completion timing of the state transition by the slide mechanism that slides the occupant support portion.

In the above seat unit, the occupant support section further includes a seat back and an ottoman, and the plurality of movable mechanisms include a back movable mechanism for moving the seat back and an ottoman movable mechanism for moving the ottoman. , should have
By doing so, it is possible to appropriately control the completion timing of the state transition of the seat back and the ottoman.

The seat unit described above further includes a distance sensor that detects the distance between the ottoman and other members, and the controller controls the ottoman so that it does not interfere with other members based on the detection result of the distance sensor. Secondly, the ottoman movable mechanism may be controlled.
By doing so, it is possible to control the ottoman so as not to collide with other members.

In the above-described seat unit, the occupant support section further includes a rotatably movable seat cushion, and the control section controls the ottoman based on the detection result of the distance sensor when the seat cushion is rotatably moved. It is preferable to control the ottoman movable mechanism so as not to interfere with other members.
By doing so, it is possible to control the ottoman so as not to collide with other members when the seat cushion rotates.

In the seat unit described above, the control section preferably controls the tilt angle of the seat cushion so that the front end of the seat cushion becomes higher than the rear end when the seat cushion rotates.
By doing so, the occupant can be supported so that the occupant can easily move from the seat cushion when the seat cushion rotates.

In the above seat unit, the occupant support section may further include a side support, and the side support may protrude to support the occupant's body when the seatback is pivoted.
By doing so, the occupant's body can be stably supported when the seat back rotates.

The above seat unit may further include a voice input section for receiving voice input from the passenger, and the control section may operate the movable mechanism according to the voice input received by the voice input section.
By doing so, it is possible to reduce the effort of the passenger to operate the movable mechanism.

According to the present invention, it is possible to shorten the time required to complete the transition from the current state to the target state of the plurality of movable parts that constitute the seat.
According to the present invention, it is possible to clearly inform the seated person that the deformation of the seat has been completed.
ADVANTAGE OF THE INVENTION According to this invention, the timing of the transition start of a some movable mechanism can be set accurately.
According to the present invention, the transition of other movable mechanisms can be completed before the state transition by the slide mechanism that slides the seat is completed.
According to the present invention, it is possible to appropriately control the completion timing of the state transition of the seat back and the ottoman.
According to the present invention, the ottoman can be controlled so as not to collide with other members.
ADVANTAGE OF THE INVENTION According to this invention, when a seat cushion rotates, it can be controlled so that an ottoman may not collide with other members.
ADVANTAGE OF THE INVENTION According to this invention, when a seat cushion rotates, a passenger|crew can be supported so that a passenger|crew can move easily from a seat cushion.
According to the present invention, the occupant's body can be stably supported when the seatback rotates.
According to the present invention, it is possible to reduce the effort of the passenger to operate the movable mechanism.

1 is a perspective view of a vehicle seat unit according to this embodiment; FIG. FIG. 2 is a side view schematically showing the configuration of the vehicle seat unit; It is a figure which shows the control object of ECU. 1 is a diagram schematically showing an interior space of a vehicle in which a vehicle seat unit is mounted; FIG. It is a figure which shows the state which folded the 3rd row seat of the vehicle. FIG. 10 is a diagram showing a state in which the second-row vehicle seat unit is deformed to a tilted posture; It is a figure which shows the standing posture of the vehicle seat unit. FIG. 5 is a diagram showing a state in the middle of deformation of the vehicle seat unit; FIG. 5 is a diagram showing a state in the middle of deformation of the vehicle seat unit; FIG. 5 is a diagram showing a state in the middle of deformation of the vehicle seat unit; 4 is a timing chart of operations of the slide mechanism, the back moving mechanism, the cushion moving mechanism, and the ottoman moving mechanism when the posture of the seat is changed. It is a figure which shows the vehicle seat unit which concerns on a modification. It is a figure which shows the vehicle seat unit which concerns on a modification. It is a figure which shows the headrest which concerns on a modification. It is a figure which shows the headrest which concerns on a modification. It is a figure which shows the headrest which concerns on a modification. FIG. 4 is a diagram schematically showing the upper surface of the vehicle seat unit before rotation; FIG. 4 is a diagram schematically showing a side surface of the vehicle seat unit before rotation; FIG. 4 is a diagram schematically showing the upper surface of the vehicle seat unit after rotation; FIG. 4 is a diagram schematically showing a side surface of the vehicle seat unit after rotation; FIG. 4 is a diagram schematically showing the upper surface of the vehicle seat unit before rotation; FIG. 4 is a diagram schematically showing a side surface of the vehicle seat unit before rotation; FIG. 4 is a diagram schematically showing the upper surface of the vehicle seat unit after rotation; FIG. 4 is a diagram schematically showing a side surface of the vehicle seat unit after rotation; FIG. 4 is a diagram schematically showing the upper surface of the vehicle seat unit before rotation; FIG. 4 is a diagram schematically showing the upper surface of the vehicle seat unit after rotation; FIG. 4 is a diagram for explaining the operation of preventing interference between the ottoman of the vehicle seat unit and the instrument panel; FIG. 4 is a diagram schematically showing the position of the monitor device with respect to the vehicle seat unit in the standing posture; FIG. 4 is a diagram schematically showing the position of the monitor device with respect to the vehicle seat unit in a tilted posture; FIG. 5 is a diagram schematically showing positions of seat belt anchors with respect to the vehicle seat unit when the vehicle is in a standing posture; FIG. 4 is a diagram schematically showing positions of anchors of seat belts with respect to the vehicle seat unit in a reclined posture. FIG. 4 is a diagram schematically showing the upper surface of the vehicle seat units arranged side by side; FIG. 4 is a diagram schematically showing the upper surfaces of the vehicle seat units arranged side by side during a side collision; It is a figure which shows the vehicle seat unit which concerns on a modification.

A vehicle seat unit 1 according to an embodiment of the present invention (hereinafter referred to as the present embodiment) will be described below with reference to FIGS. 1 to 26. FIG. The vehicle seat unit 1 is obtained by applying the seat unit of the present invention to a vehicle seat, but the seat unit is applicable not only to vehicles but also to other vehicle seats.
The embodiments described below are merely examples for facilitating understanding of the present invention, and do not limit the present invention. That is, the shape, size, arrangement, etc. of the members described below can be changed and improved without departing from the scope of the present invention, and the present invention naturally includes equivalents thereof.

In the following description, the term "front-rear direction" means the front-rear direction when viewed from a person seated in the vehicle seat unit 1, and is the direction that coincides with the running direction of the vehicle.
The "seat width direction" means the lateral width direction of the vehicle seat unit 1, and coincides with the left-right direction of the vehicle seat unit 1 as seen from the seated person.
Further, the "vertical direction" means the height direction of the vehicle seat unit 1, and coincides with the vertical direction when the vehicle seat unit 1 is viewed from the front.

<<Configuration of Vehicle Seat Unit 1>>
First, the configuration of the vehicle seat unit 1 will be described with reference to FIGS. 1 to 3. FIG.
The vehicle seat unit 1 is a seat mounted in an automobile on which an occupant can sit. In this embodiment, the vehicle seat unit according to the present invention is applied to the first row of seats (front seats) and the second row of seats (middle seats) in the third row of seats of a vehicle. described as.
The vehicle seat unit 1 according to the present embodiment can be transformed into at least two states, ie, a standing posture in which the seat back 10 stands upright and a collapsed posture in which the seat back 10 tilts backward. When the vehicle seat unit 1 is in the upright posture, the occupant assumes a normal standing posture (for example, driving posture) with respect to the vehicle seat unit 1 . On the other hand, when the vehicle seat unit 1 is in a tilted posture, the occupant takes a neutral posture with respect to the vehicle seat unit 1 .

As shown in FIGS. 1 to 3, the vehicle seat unit 1 includes a seat body S as a vehicle seat on which an occupant sits, and an ECU 40 (Electronic Control Unit) as a control section for controlling the operation of each part of the seat body S. Unit) and various sensors.
1 shows a perspective view of the vehicle seat unit 1 in a tilted posture, and FIG. 2 schematically shows a side view of the vehicle seat unit 1 in a standing posture. .

The seat body S includes an occupant support portion S1 and a plurality of movable mechanisms. Specifically, the occupant support portion S<b>1 includes a seat back 10 , a seat cushion 11 , an ottoman 12 , a headrest 13 , a neck rest 14 , a support member 32 and an armrest 33 .
Further, the plurality of movable mechanisms are mechanisms for moving a plurality of parts constituting the occupant support portion S1. A movable mechanism 19 and a slide mechanism 20 are provided.

The seat back 10 supports the back of the occupant from behind, supports a cushion material on a frame (not shown), and covers the cushion material with an outer skin.

The seatback 10 according to the present embodiment is divided into upper and lower parts, and has a seatback upper portion 10a and a seatback lower portion 10b. The seatback upper portion 10a supports a portion of the occupant's back that is positioned at the same height as the chest. The seatback lower portion 10b supports a portion of the occupant's back that extends from the abdomen to the waist.
Further, the seat back 10 can be moved (strictly speaking, rotated) so as to tilt backward with respect to the seat cushion 11 by the back moving mechanism 15 .

The back moving mechanism 15 is a mechanism for moving (rotating) the seat back 10 so as to change the inclination angle of the seat back 10, and is configured by, for example, a motor-driven electric reclining mechanism. As the back movable mechanism 15 operates, the seat back 10 rotates around the shaft member that connects the seat back 10 and the seat cushion 11 .

The seat cushion 11 is configured by supporting the buttocks of the occupant from below, placing a cushion material on a frame (not shown), and covering the cushion material with an outer skin. A rear end portion of the seat cushion 11 is connected to a lower end portion of the seat back 10 (strictly speaking, a lower end portion of the seat back lower portion 10b) via a shaft extending along the seat width direction.

Further, the seat cushion 11 according to the present embodiment can be rotated by the cushion moving mechanism 16 such that the front end portion thereof moves up and down in the vertical direction.

The cushion moving mechanism 16 is a mechanism for moving (rotating) the ottoman 12 so that the front end portion of the seat cushion 11 moves up and down, and is configured by, for example, a jack-type electric lift mechanism. The front end of the seat cushion 11 rotates with respect to the rear end of the seat cushion 11 by operating the cushion moving mechanism 16 .

The ottoman 12 is configured by supporting the occupant's lower legs from below, placing a cushion material on a frame board (not shown), and covering the cushion material with an outer skin. The ottoman 12 is supported by the front end portion of the seat cushion 11 via a pivot shaft extending along the width direction of the seat. That is, the ottoman 12 is rotatable around the above-described rotation axis.

The ottoman 12 is rotated to move between the deployed position and the retracted position. The retracted position is the position when the ottoman 12 is not in use, and is the position when the ottoman 12 is suspended and the tip (free end) of the ottoman 12 is closest to the seat cushion 11 . The unfolded position is a position where the ottoman 12 is used (for easy understanding, a position where the occupant's lower legs can be supported), and is a position when the ottoman 12 protrudes forward from the front end of the seat cushion 11 . be.

Note that the ottoman 12 may extend and contract from the base end portion supported by the seat cushion 11 to the free end portion (hereinafter referred to as the total length). In other words, the ottoman 12 may be configured such that the overall length is the shortest when it is in the retracted position, and the overall length gradually increases as it approaches the extended position.

The ottoman moving mechanism 17 is a mechanism for moving (rotating) the ottoman 12 so that the ottoman 12 moves from the retracted position to the deployed position or from the deployed position to the retracted position. Consists of The ottoman 12 rotates the front end of the ottoman 12 with respect to the rear end of the ottoman 12 by operating the ottoman movable mechanism 17 .

The headrest 13 supports the occupant's head from behind, and is configured by arranging a foam material or a cushion material around a frame (not shown) and covering the periphery with a skin material. A pillar, which is a support, extends downward from the lower end of the neck rest 14 . This pillar is inserted into the upper end of the seat back 10 . Therefore, the headrest 13 is positioned above the seat back 10 when the vehicle seat unit 1 is in the standing posture.

Further, in this embodiment, the headrest 13 can be moved up and down with respect to the seatback 10 by the headrest moving mechanism 18 . That is, in this embodiment, it is possible to change the position for supporting the head of the occupant according to the movement of the headrest 13 by the headrest moving mechanism 18 .

The headrest moving mechanism 18 is a mechanism that moves (vertically moves) the headrest 13 with respect to the seatback 10 along the extending direction of the seatback 10 . The headrest movable mechanism 18 is fixed to a seatback frame (not shown) inside the seatback 10 and engages with a pillar of the headrest 13 .
Specifically, the headrest moving mechanism 18 has a pinion (not shown) connected to a motor. This pinion engages a rack (not shown) formed on the pillar of the headrest 13 . When the headrest moving mechanism 18 configured as described above operates, the engagement position between the pinion and the rack moves, and accordingly the headrest 13 including the pillars moves in the extending direction of the seatback 10. .

The neck rest 14 supports the neck of the occupant from behind, is formed by forming a cushioning material (not shown) into a predetermined shape, and covers the periphery of the cushioning material with an upholstery material.
Also, the neck rest 14 is provided with a through hole (not shown). The neck rest 14 is supported by the pillars of the headrest 13 through which the pillars are inserted. A portion of the pillar protruding from the through hole of the neck rest 14 is inserted into the upper end portion of the seat back 10 . Therefore, when the vehicle seat unit 1 is in the standing posture, the neck rest 14 is positioned below the headrest 13 and above the seat back 10 .

Further, in the present embodiment, the neck rest moving mechanism 19 allows the neck rest 14 to move relative to the headrest 13 along the extending direction of the seatback 10 . Specifically, the neck rest 14 can slide (slide) along each of the pillars of the headrest 13 and the stays in the seat back 10 . That is, in this embodiment, by changing the movement of the neck rest 14, it is possible to change the position supporting the neck of the occupant in the extension direction. For example, when the headrest 13 is moved to change the head support position, the neck rest 14 is moved to change the neck support position accordingly.

In addition, when the neck rest 14 moves along the extending direction of the seat back 10, the neck rest 14 moves alone. That is, the neck rest 14 according to this embodiment can move while being separated from the headrest 13 . In other words, in this embodiment, each of the headrest 13 and the neck rest 14 can be moved independently.

The support member 32 is a member that supports the seat body S from below, and is attached to the lower portion of the seat cushion 11 . Specifically, the support member 32 is configured by covering a frame member connecting the seat body S and the slide mechanism 20 with a cover member. It should be noted that an ECU 40 as a control section for controlling each section of the vehicle seat unit 1 is housed inside the support member 32 . Of course, the ECU 40 is not limited to the support member 32, and may be housed inside the seat back 10, the seat cushion 11, or the like, or may be externally attached to the seat body S.

The slide mechanism 20 is a mechanism for sliding the seat body S in the longitudinal direction with respect to the vehicle body floor F. As shown in FIG. The slide mechanism 20 includes an upper rail 21 , a lower rail 22 , and a slide motor for sliding the upper rail 21 relative to the lower rail 22 .
The upper rails 21 are fixed to the seat body S via support members 32, and the lower rails 22 are fixed to the vehicle body floor F. As shown in FIG. Here, by operating the above-described slide motor to slide the upper rail 21 forward and backward with respect to the lower rail 22, the seat main body S, that is, the seat back 10, the seat cushion 11 and the ottoman 12 are integrated into the vehicle body floor F. can be moved forwards and backwards.

The armrests 33 are arm rests provided on both sides of the seat back 10 . The armrest 33 is attached to the seat back 10 so as to be rotatable around a shaft portion 33a. The rotation of the armrest 33 may be electrically performed by a rotation motor (not shown).

Further, the vehicle seat unit 1 includes various sensors and various devices in addition to the above configuration. For example, as shown in FIGS. 2 and 3, in the present embodiment, the vehicle seat unit 1 includes an occupant detection sensor 23, a temperature adjustment section 24, a lumbar support mechanism 25, a pressure sensor 26, a vibration motor 27, a first A distance sensor 28 , a second distance sensor 29 , an illuminance sensor 30 and an operation switch 31 are provided.

The occupant detection sensor 23 is provided inside the seat cushion 11 and is a sensor for detecting that an occupant is seated on the seat back 10. For example, the occupant detection sensor 23 is configured by a seat belt reminder sensor (pressure sensor). .

The temperature adjustment unit 24 is a device that is provided between the outer skin of the seat cushion 11 and the cushion and adjusts the temperature of the seat surface portion of the seat cushion 11 . For example, the temperature adjustment unit 24 includes a temperature sensor (eg, thermistor), a heating element (eg, heater) for warming the seat surface, and a cooling element (eg, Peltier element) for cooling the seat surface. Then, the temperature adjustment unit 24 switches ON/OFF of the heating element and the cooling element according to the temperature detected by the temperature sensor and the preset target temperature, and adjusts the temperature of the seat surface of the seat cushion 11 in advance. It works to get closer to the set target value.

The lumbar support mechanism 25 is composed of an inflatable bag (a so-called air lumbar) arranged in the seat cushion 11 just behind the backrest surface. When the lumbar support mechanism 25 expands, the seatback upper portion 10a is displaced toward the occupant, and when the lumbar support mechanism 25 contracts, the seatback upper portion 10a is displaced away from the occupant.

The pressure sensor 26 is a sensor that detects that the occupant's neck is in contact with the support surface of the neck rest 14 . For example, the neck rest movable mechanism 19 may slide the neck rest 14 up and down until the pressure sensor 26 detects a predetermined pressure.

The vibration motor 27 is provided inside the neck rest 14 and is a device that applies vibration stimulation to the back of the passenger seated on the vehicle seat unit 1 . For example, the vibration motor 27 may be used to massage an occupant seated on the vehicle seat unit 1, or may be used to provide vibration stimulation to the occupant when it is detected that the occupant is in a low arousal state. May be used to bestow and return to wakefulness.

The first distance sensor 28 is a sensor that is provided on the headrest 13 and detects the distance between a predetermined position on the headrest 13 and the head of the occupant.
For example, the headrest moving mechanism 18 may slide the headrest 13 vertically based on distance data detected by the first distance sensor 28 .
Specifically, the headrest moving mechanism 18 moves the headrest 13 so that the distance detected by the first distance sensor 28 becomes a predetermined value, and then the pressure detected by the pressure sensor 26 becomes a predetermined value. , the neck rest moving mechanism 19 moves the neck rest 14 .

The second distance sensor 29 is a sensor that is provided on the headrest 13 and detects the distance between the headrest 13 and an object in front. For example, when the ottoman moving mechanism 17 rotates and deploys the ottoman 12 upward, if the distance detected by the second distance sensor 29 becomes equal to or less than a predetermined value, the ottoman moving mechanism 17 You may make it stop rotation and extension by.

The illuminance sensor 30 is a sensor for detecting the brightness around the vehicle seat unit 1, that is, the brightness inside the vehicle V in which the vehicle seat unit 1 is mounted. . For example, the illuminance of the lighting system 50 provided in the vehicle V may be controlled according to the brightness detected by the illuminance sensor 30 .

The operation switch 31 is provided on the side portion of the seat cushion 11 of the vehicle seat unit 1 and is an operation portion for instructing the posture deformation of the vehicle seat unit 1 . For example, the operation switch 31 includes a first switch for transforming the vehicle seat unit 1 from the upright posture to the reclined posture, and a second switch for transforming the vehicle seat unit 1 from the reclined posture to the upright posture. good.

The ECU 40 is a control unit that receives output signals from the sensors described above and controls each drive mechanism based on the received signals.
As shown in FIG. 3 , the ECU 40 has a processor 41 , a memory 42 and an input/output interface 43 .

The processor 41 is a central processing unit that executes various kinds of arithmetic processing based on programs and data stored in the memory 42 and controls each section of the vehicle seat unit 1 .
The memory 42 is, for example, a semiconductor memory, stores various programs and data, and also functions as a work memory for the processor 41 .
The input/output interface 43 includes the back movable mechanism 15, the cushion movable mechanism 16, the ottoman movable mechanism 17, the headrest movable mechanism 18, the neckrest movable mechanism 19, the slide mechanism 20, the occupant detection sensor 23, the temperature adjustment section 24, and the lumbar support mechanism 25. , the pressure sensor 26, the vibration motor 27, the first distance sensor 28, the second distance sensor 29, the illuminance sensor 30, the operation switch 31, and the lighting system 50, and communicate with each device.
Then, the processor 41 executes various arithmetic processing based on signals received from each device connected via the input/output interface 43 and controls each device.

Specifically, the ECU 40 aligns the headrest 13 and the neck rest 14 based on the output signal from the occupant detection sensor 23 . That is, the ECU 40 operates the headrest moving mechanism 18 and the neckrest moving mechanism 19 based on the output signal from the first distance sensor 28 of the headrest 13 . Accordingly, the headrest 13 and the neckrest 14 move along the extension direction of the seat back 10 .
At this time, the ECU 40 controls the displacement amounts of the headrest movable mechanism 18 and the neckrest movable mechanism 19 based on output signals from the first distance sensor 28 of the headrest 13 and the pressure sensor 26 of the neckrest 14 .

Further, as described above, the vehicle seat unit 1 is provided with the operation switch 31 for changing the posture. The operation switch 31 is a push-button type switch provided on the door or armrest of the vehicle, and is operated by an occupant seated on the vehicle seat unit 1 to switch the posture of the seat back 10 .

When the operation switch 31 is operated, a signal corresponding to the operation content is output from the operation switch 31 , and the illuminance sensor 30 controls each drive mechanism based on the output signal from the operation switch 31 . More specifically, when the operation switch 31 is operated to switch the posture of the seat back 10 from the upright posture to the reclined posture, the ECU 40 controls the front and rear positions of the vehicle seat unit 1, the seat back 10 and the seat cushion 11. , the slide mechanism 20, the back moving mechanism 15, the cushion moving mechanism 16, and the ottoman moving mechanism 17 are controlled so as to move each of the ottomans 12 to the position of the collapsed posture.

<<Regarding the operation when the vehicle seat unit 1 is deformed>>
Details of the operation of the vehicle seat unit 1 when it is transformed from the upright posture to the reclined posture will be described below with reference to FIGS. 4 to 11 .

In the following description, the position of the seat back 10 when the vehicle seat unit 1 is in the standing posture is referred to as the "first standing position", and the position of the seat back 10 when the vehicle seat unit 1 is in the reclined posture is referred to as "first standing position". It is assumed to be a “falling position” (corresponding to the first state).
Further, the position of the seat cushion 11 when the vehicle seat unit 1 is in the standing posture is the "second standing position", and the position of the seat cushion 11 when the vehicle seat unit 1 is in the reclined posture is the "upright position". (corresponding to the second state).
Further, the position of the ottoman 12 when the vehicle seat unit 1 is in the standing posture is the "third standing position", and the position of the ottoman 12 when the vehicle seat unit 1 is in the reclined posture is the "deployed position" (third position). state).

In the example described below, the vehicle V has three rows of seats, and the front seats (vehicle seat unit 1A) and the middle seats (vehicle seat unit 1B) are equipped with the vehicle seats according to the present embodiment. I am using Unit 1. In the following description, the operation of the vehicle seat unit 1B, which is a middle seat, is changed from the upright posture shown in FIG. 4 to the reclined posture shown in FIG.

The "falling posture" is a posture when the seat back 10 is tilted backward, the front end of the seat cushion 11 is slightly raised, and the ottoman 12 is in the unfolded position. When the occupant is seated on the vehicle seat unit 1 in the reclined posture, the occupant takes a so-called neutral posture. The neutral posture is a posture that places the least burden on the seat occupant and causes less fatigue.
Specifically, as shown in FIG. 6, when the angle formed by the seat back 10 and the seat cushion 11 is θ1, and the angle formed by the seat cushion 11 and the ottoman 12 is θ2, the vehicle seat unit 1 is in a tilted posture. , 128 degrees as an example of θ1, and 133 degrees as an example of θ2. Of course, the numerical values of θ1 and θ2 are not limited to the above examples. For example, θ1 may be 121 degrees to 135 degrees, and θ2 may be 125 degrees to 141 degrees.

FIG. 4 shows a state in which the vehicle seat unit 1B is in a standing posture. In this state, when the occupant inputs an operation to switch to the standing posture using the operation switch 31, the ECU 40 starts processing for shifting to the standing posture.
That is, when the occupant performs an operation for switching the vehicle seat unit 1 to the reclined posture, the ECU 40 causes the operation switch 31 to receive the operation and output a signal corresponding to the operation content. When the ECU 40 receives the output signal from the operation switch 31, the ECU 40 uses this as a trigger to execute the processing of the falling posture transition flow.

Specifically, when the ECU 40 receives an output signal from the operation switch 31, the third row seat 2 is folded as shown in FIG.
For example, the third row seat 2 includes a seat cushion 2A, a seat back 2B, and a link mechanism 2C. By rotating the link mechanism 2C forward, the seat cushion 2A and the seat back 2B of the third row seat 2 are stacked. Change to the combined folded state.

Next, the ECU 40 calculates the amount of movement of the seat back 10, the seat cushion 11, the ottoman 12, and the upper rails 21 necessary for shifting to the reclined posture.

More specifically, the ECU 40 first controls the movement of the seat back 10, the seat cushion 11, the ottoman 12, and the upper rail 21 from Hall ICs of actuators that constitute the back movable mechanism 15, the cushion movable mechanism 16, the ottoman movable mechanism 17, and the slide mechanism 20. Identify the current position of each.
Next, the ECU 40 calculates the amount of movement of each of the seat back 10, the seat cushion 11, the ottoman 12, and the upper rail 21 from the specified current position (current state) to the target position (target state) in the reclined posture. Here, the target position in the reclining posture corresponds to the "reclining position" of the seat back 10, the "upright position" of the seat cushion 11, and the "deployed position" of the ottoman 12. FIG. Also, the target position of the upper rail 21 is assumed to be a predetermined position in the longitudinal direction (for example, the maximum rearward position to which the upper rail 21 can move).

Next, the ECU 40 calculates the movement amounts of each of the seat back 10, the seat cushion 11, the ottoman 12, and the upper rail 21, and then calculates the movement amounts of the back moving mechanism 15, the cushion moving mechanism 16, the ottoman moving mechanism 17, and the movement amounts of the respective movement amounts. The time required for the realization by the slide mechanism 20 is calculated. Here, the time required for the back moving mechanism 15 is the first operating time, the time required for the cushion moving mechanism 16 is the second operating time, the time required for the ottoman moving mechanism 17 is the third operating time, and the required time for the slide mechanism 20 is the third operating time. 4 operating hours.

Specifically, regarding the first operation time to the third operation time, the first operation time is the longest, the third operation time is the second longest, and the second operation time is the shortest. This reflects the fact that when the vehicle seat unit 1 is switched from the upright posture to the reclined posture, the seat back 10 moves the largest, the ottoman 12 moves the second largest, and the seat cushion 11 moves the smallest. ing.

Next, the ECU 40 moves the seat back 10, the seat cushion 11, and the ottoman 12 by the back movable mechanism 15, the cushion movable mechanism 16, and the ottoman movable mechanism 17 based on the first to third operation times. Set (determine) the start point (migration start timing). Specifically, the ECU 40 sets the movement start points of the seat back 10, the seat cushion 11, and the ottoman 12 so that the movement of each of the seat back 10, the seat cushion 11, and the ottoman 12 is completed at the same timing.

The procedure for setting the movement start point will be described with reference to FIG.
In the timing chart shown in FIG. 11, the operation time of the slide mechanism 20 is the longest, and the ECU 40 operates the slide mechanism 20 after a predetermined time (t0) from the time when the operation input of the operation switch 31 is received. and Before the operation end time (t5) of the slide mechanism 20 ends, a common movement end time (t4) for each of the seat back 10, the seat cushion 11 and the ottoman 12 is set. Of course, the timings of t4 and t5 may be the same, or t4 may be after t5.

Next, assuming that the first operation time is T1, the second operation time is T2, and the third operation time is T3, T1, T2, and T3 have a relationship of T1>T2>T3.
Then, the ECU 40 sets the first start timing (t1), which is the operation start timing of the back movable mechanism 15, to a time T1 earlier than the movement end time (t4).
Further, the ECU 40 sets the second start timing (t2), which is the operation start timing of the cushion movable mechanism 16, to a time T2 earlier than the movement end time (t4).
In addition, the ECU 40 sets the third start timing (t3), which is the operation start timing of the ottoman movable mechanism 17, to a time T3 earlier than the movement end time (t4).
In this case, the order is the first start timing (t1), the third start timing (t3), and the second start timing (t2).

The ECU 40 starts operating the back movable mechanism 15 at the first start timing set by the above processing, starts operating the cushion movable mechanism 16 at the second start timing, and starts the ottoman movable mechanism 17 at the third start timing. Start working.

The operation start timing of the back movable mechanism 15, the cushion movable mechanism 16, and the ottoman movable mechanism 17 by the ECU 40 will be described more specifically with reference to FIGS. 7 to 10. FIG.

FIG. 7 corresponds to the state (standing posture) at the start of movement. FIG. 8 corresponds to the state between the first start timing and the third start timing. FIG. 9 corresponds to the state between the third start timing and the second start timing. FIG. 10 corresponds to the state (falling posture) from the second start timing to the end of movement.

First, the ECU 40 starts the operation of the slide mechanism 20 to start moving the seat body S rearward after a predetermined time has elapsed since the operation switch 31 was operated.
Next, as shown in FIG. 8, when the first start timing arrives, the ECU 40 starts operating the back moving mechanism 15 to start tilting the seat back 10 backward.

After that, as shown in FIG. 9 , the ECU 40 starts operating the ottoman movable mechanism 17 to start deploying the ottoman 12 when the third start timing arrives.

Next, as shown in FIG. 10, when the second start timing arrives, the ECU 40 starts operating the cushion movable mechanism 16 to start rotating the front end portion of the seat cushion 11 .
Then, the ECU 40 stops the operations of the back movable mechanism 15, the cushion movable mechanism 16, and the ottoman movable mechanism 17 when the movement end time (t4) of the seat back 10, the seat cushion 11, and the ottoman 12 comes.
Finally, when the operation end time (t5) of the slide mechanism 20 arrives, the ECU 40 stops the operation of the slide mechanism 20 to complete the transition of the vehicle seat unit 1 to the tilted posture.

In this embodiment, the movement end points of the seat back 10, the seat cushion 11, and the ottoman 12 are the same. In other words, in this embodiment, the seat back 10 reaches the reclined position, the seat cushion 11 reaches the raised position, and the ottoman 12 reaches the unfolded position at substantially the same timing. Since the movement of each part of the seat ends at the same timing, the occupant seated on the vehicle seat unit 1 can intuitively recognize the time point when the posture deformation of the seat ends. In addition, since the occupant is seated on the vehicle seat unit 1 even while the posture is being changed, it is more comfortable for the occupant if the movements of the seat parts end at the same time than when the movements of the seat parts come to an end in order. come to feel.

Further, in the vehicle seat unit 1, when the vehicle seat unit 1 is shifted from the standing posture to the reclined posture, the seat back 10, the seat cushion 11, and the ottoman 12 are moved while the vehicle seat unit 1 is being slid rearward by the slide mechanism 20. can shorten the time until the transition from the standing posture to the lying posture is completed, compared with the case where the seat back 10, the seat cushion 11 and the ottoman 12 are moved before and after the slide.

<<other embodiments>>
The invention is not limited to the embodiments described above.
For example, the seat unit according to the present invention is not limited to application to a vehicle seat, but is a seat of other vehicles in which passengers board (for example, vehicles other than automobiles including railways, or aircraft and ships). It is also applicable to medical examination sheets in hospitals, dental clinics, and the like.

Further, the control of the back movable mechanism 15, the cushion movable mechanism 16, the ottoman movable mechanism 17, and the slide mechanism 20 of the vehicle seat unit 1 is not limited to the transformation from the upright posture to the reclined posture, and the transformation from the reclined posture to the upright posture. , and general processing for transforming from the first posture to the second posture.

Further, in the vehicle seat unit 1, in addition to the back movable mechanism 15, the cushion movable mechanism 16, the ottoman movable mechanism 17, and the slide mechanism 20, by operating the headrest movable mechanism 18 and the neckrest movable mechanism 19, the vehicle seat can be moved. The seat back 10 of the unit 1, the seat cushion 11, the ottoman 12, the headrest 13, the neck rest 14, and the front and rear positions of the vehicle seat unit 1 may be appropriately changed according to the target posture.

Further, in the vehicle seat unit 1A arranged at the position of the front seat, the distance (detection result) between the ottoman 12 and the instrument panel 3 detected by the second distance sensor 29 provided on the ottoman 12 is determined. , the rotation angle and extension amount of the ottoman 12 may be regulated.

Further, the target positions of the seat back 10, the seat cushion 11, and the ottoman 12 in the upright posture and the reclined posture, etc. are set respectively for the case where the vehicle seat unit 1A is arranged on the driver's seat and the case where the vehicle seat unit 1A is arranged on the passenger's seat. You can set it differently.

Further, in the vehicle seat unit 1, for example, the lumbar support mechanism 25 may be operated at predetermined time intervals to press the waist of the occupant.

Further, in the vehicle seat unit 1, the occupant's heartbeat rhythm is detected by the occupant detection sensor 23, the pressure sensor 26, or other heartbeat sensors, and lighting of the lighting system 50 is controlled in accordance with the detected heartbeat rhythm. good.

Further, the first movable mechanism is not limited to the slide mechanism 20, and may be any of the back movable mechanism 15, the cushion movable mechanism 16, the ottoman movable mechanism 17, the headrest movable mechanism 18, and the neckrest movable mechanism 19. good. Other movable mechanisms may be used.

Further, the vehicle seat unit 1 may further include a side support mechanism that supports a person seated on the seat body S from the sides.
Specifically, as shown in FIG. 12, a side support portion 10as capable of switching between a protruding state and a retracted state is provided on the side portion of the seatback upper portion 10a, and a side portion of the seatback lower portion 10b is provided with a protruding state and a retracted state. may be provided with a side support portion 10bs capable of switching between . A side support portion 11S capable of switching between the protruding state and the retracted state may be provided on the side portion of the seat cushion 11, and a side support portion 12S capable of switching between the protruding state and the retracted state may be provided on the side portion of the ottoman 12.

In this case, when the vehicle seat unit 1 shifts from the upright posture to the reclined posture, the side supports may be closed to firmly support the occupant, and after the shift to the reclined posture is completed, the side supports may be opened. By doing so, when the ottoman 12 is moved upward, the side supports support the seated person, and the instability of the seat can be suppressed.
Further, the side supports may be opened when the vehicle seat unit 1 moves from the upright posture to the reclined posture. This makes it easier for the seated person to correct their posture.
In addition, the ECU 40 may move the side supports in accordance with vehicle conditions such as vehicle speed and curves. For example, when the occupant's body leans to the left or right on a curve or the like, the occupant's body can be supported more firmly by closing the side support on the leaning side.
At least one of the seat back 10, the seat cushion 11, and the ottoman 12 may be provided with the side support portion. When the side support portions are provided on all of the seat back 10, the seat cushion 11, and the ottoman 12, the occupant's lower body can be firmly supported in addition to the upper body.

Further, in the vehicle seat unit 1, the bag body of the lumbar support mechanism 25 may be deflated when shifting to the reclined posture. By doing so, it is possible to prevent the seated person from becoming unstable during the transition of posture.
Further, in the vehicle seat unit 1, the bag body of the lumbar support mechanism 25 may be repeatedly expanded and contracted to massage the waist of the seated person after completing the transition from the standing posture to the reclined posture.
Further, in the vehicle seat unit 1, the expansion of the bag body of the lumbar support mechanism 25 may be started at the same time as the transition from the upright posture to the reclined posture is started, and the end of inflation may be coincided with the completion of the transition from the reclined posture. . By doing so, it is possible to easily inform the seated person of the timing of completion of the transition of the lying posture.
Further, at the same time as the transition to the lying posture is started, the expansion of the bag body of the lumbar support mechanism 25 may be started, and then the bag body may be deflated. At this time, the end of contraction of the bag body may be synchronized with the completion of the transition of the lying posture. By doing so, it is possible to clearly inform the seated person of the timing of completion of the transition of the lying posture.

In the vehicle seat unit 1 described above, the illumination system 50 may include illumination provided at the shoulder of the seat body S, the headrest 13 or the neckrest 14 .
Specifically, as shown in FIG. 13 , the vehicle seat unit 1 may have a movable lighting unit 51 provided near the headrest 13 and the neckrest 14 .
The movable illumination unit 51 includes an illumination section 51A and a movable section 51B. The lighting unit 51A is provided with a light emitting device such as an LED. The movable portion 51B is a deformable member that connects the lighting portion 51A and the vehicle seat unit 1. By deforming the movable portion 51B, the lighting portion 51A can be moved to a position desired by the occupant. can be done.
The angle of illumination may be changed when the inclination of the seat back 10 is changed by the back moving mechanism 15 . Specifically, the seat back 10 has a bellows structure or the like so that the orientation can be changed manually, or has a movable mechanism, an ECU, etc., and can automatically rotate vertically and horizontally in conjunction with the inclination of the seat back 10. However, it is not limited to these.

Further, for example, as shown in FIG. 14, the headrest 13 may be provided with a rotatable lighting unit 52 . The headrest 13 shown in FIG. 14 includes a movable portion 13A movable in the front-rear direction on the side portion of the central portion 13B, and a rotatable lighting unit 52 is provided behind the movable portion 13A.
The rotatable lighting unit 52 may have a lighting section 52A, and the lighting section 52A may be turned on when the rotatable lighting unit 52 is rotated and pulled out of the headrest 13 . Also, when the rotatable lighting unit 52 is housed inside the headrest 13, the lighting section 52A may be turned off.

Further, in the vehicle seat unit 1 , the angle of the armrest 33 may be controlled so that the armrest 33 is kept horizontal, for example, when the tilt of the seatback 10 is changed by the back movable mechanism 15 .
Further, the positions of the headrest 13 and the neckrest 14 may be changed by the headrest moving mechanism 18 and the neckrest moving mechanism 19 according to the inclination of the seat back 10 .
For example, when the headrest 13 is provided with left and right movable parts, the left and right movable parts may be closed so as to wrap the head of the seated person in the lying posture.
Further, in the vehicle seat unit 1, the seat body S may be provided with a speaker.
Specifically, as shown in FIG. 15, the speaker 53 may be provided so as to protrude from the outside of the left and right movable portions 13A of the headrest 13 . If the speaker is arranged outside the headrest 13, interference with the passenger's head can be avoided.
Further, as shown in FIG. 16, if the speaker 53 is arranged inside the headrest 13, the size of the headrest 13 can be avoided.
Then, the volume from the speaker may be set to such an extent that only the seated person can hear it.

Further, in the vehicle seat unit 1, a rotating mechanism for rotating the seat body S may be provided. Here, as shown in FIGS. 17A, 17B, 18A and 18B, the tilt angle of the seat cushion 11 may be increased by the cushion movable mechanism 16 when the vehicle seat unit 1 is rotated.
17A and 17B correspond to the state before rotation of the vehicle seat unit 1 arranged close to the vehicle door D. FIG. 18A and 18B correspond to the state after the vehicle seat unit 1 is rotated.
As shown in FIGS. 17A, 17B, 18A and 18B, the seat cushion 11 is rotated inwardly with respect to the vehicle door D so that the front of the seat cushion 11 is raised. to control the tilt angle of the
By increasing the tilt angle in this way, the occupant's legs can easily approach the seat cushion side. For example, a console box, a door lining, etc. can be considered, but not limited to these), it becomes difficult to interfere.

Further, the seat back 10 may be erected once when the vehicle seat unit 1 is rotated by the rotation mechanism. Thereby, interference between the seat back 10 and the vehicle door can be suppressed.
Further, as shown in FIGS. 19A, 19B, 20A and 20B, when the seat back 10 has a folding mechanism, when the vehicle seat unit 1 is rotated with respect to the vehicle door D by the rotation mechanism, , the center-folding mechanism of the seat back 10 may be in a forward-tilted state. By doing so, interference between the vehicle door D and the seat back 10 can be suppressed.
19A and 19B correspond to the state of the vehicle seat unit 1 arranged close to the vehicle door D before rotation. 20A and 20B correspond to the state after the vehicle seat unit 1 is rotated.
Further, after the vehicle seat unit 1 is rotated, the folding mechanism of the seat back 10 may be changed to the relaxed posture. That is, the state shown in FIGS. 20A and 20B may be transitioned to the state shown in FIGS. 19A and 19B.

Further, as shown in FIGS. 21A and 21B, the ottoman 12 may be retracted when the vehicle seat unit 1 is rotated. 21A and 21B schematically show the upper surface of the vehicle seat unit 1. FIG. Specifically, as shown in FIGS. 21A and 21B, the vehicle seat unit 1L arranged on the far side with respect to the vehicle door D is replaced with the vehicle seat arranged on the close side with respect to the vehicle door D. When rotating toward the unit 1R, the ottoman 12 of the vehicle seat unit 1L may be folded downward and stored. By doing so, interference between the ottoman 12 of the vehicle seat unit 1L and the vehicle seat unit 1R or other members can be suppressed. The ottoman 12 may be provided with a telescopic function. When the vehicle seat unit 1 is rotated, interference with the vehicle seat unit 1R and other members can be suppressed by shortening the length.
Also, when the seat body S is rotated, the armrest 33 may be lowered. By doing so, interference between the armrest 33 and the front seats and vehicle doors can be suppressed.

Further, when the vehicle seat unit 1 is a middle seat of a third row seat, the distance from the front seat is detected, and a driving device is provided to control the movement of the ottoman 12 so that the ottoman 12 does not interfere with other members. may be controlled.
Further, when the front seats are shifted to the reclining posture, the mid seats may be slid rearward. This configuration makes it easier to avoid interference with the front seats.
Further, when shifting the mid seat to the reclining posture, the seat back 10 of the rear seat may be folded forward first. With this configuration, interference with the rear seat can be easily avoided when shifting to the reclined posture.
Further, when the mid-seat shifts to the reclining posture, the seat back 10 of the rear seat may not return to the upright state from the forward-reclining state. With this configuration, unexpected interference with the rear seats can be easily avoided.
Also, when the mid-seat recovers from the collapsed posture, the state transition of the part that takes the longest time to recover and the state transition of the ottoman 12 may be started at the same time. This makes it possible to avoid interference between the front seats and the mid seats.
Further, as shown in FIG. 22, the ottoman 12 and the slide mechanism 20 are arranged so as to suppress interference between the ottoman 12 and the instrument panel 3 when the vehicle seat unit 1 provided as the front seat shifts to the reclined posture. may be controlled. At this time, the vehicle seat unit 1 may be provided with a driving device to automatically adjust the longitudinal position of the vehicle seat unit 1 provided as a front seat to avoid interference with the instrument panel 3 and the mid-seat. good. Specifically, after the vehicle seat unit 1 is slid rearward by the slide mechanism 20 to a position where the ottoman 12 does not interfere with the instrument panel 3, the ottoman 12 is rotated upward.

Also, the vehicle seat unit 1 can be installed in an automatic driving vehicle. In this case, when switching to automatic driving, the vehicle seat unit 1 may be shifted from the upright posture to the reclined posture.
Also, when switching from automatic operation to manual operation, the lying posture may be changed to the standing posture. At this time, the length of the first required time until transition from the standing posture to the lying posture and the length of the second required time until shifting from the lying posture to the standing posture may be changed.
For example, the second required time may be shorter than the first required time. By doing so, it is possible to quickly perform the driving operation.
Further, for example, the second required time may be longer than the first required time. By doing so, preparations before operation can be slowly carried out.
Further, for example, the first required time and the second required time may be set substantially the same. By doing so, it is possible to easily grasp the transition time between the standing posture and the lying posture.
Also, the time required for the vehicle to shift from the lying posture to the standing posture according to the operation of the occupant may be shorter than the time required for the vehicle to shift from the lying posture to the standing posture when getting off the highway after traveling on the highway.
Further, in the vehicle seat unit 1, the lying posture may be shifted to the standing posture according to the distance from the front and rear vehicles and the vehicles running on the left and right lanes. The transition time in this case may be shorter than, for example, the attitude transition time when getting off from a high speed.
Also, the vehicle may be equipped with a navigation system to grasp the conditions of the road on which the vehicle is traveling in advance, and each movable part may be moved accordingly. For example, when it is detected or predicted that the vehicle will approach a curve, the side supports may be protruded in the direction in which the occupant's body inclines to support the occupant's sides. In addition to the navigation system, the road conditions may be detected by a radar, an in-vehicle camera, or the like.

In addition, the vehicle seat unit 1 includes a biosensor for detecting the biometric information of the seated person, and when the seated person is relaxed in the standing posture, the posture is changed more slowly than in the normal case. good. By doing so, it is possible to prevent the relaxed state of the seated person from being disturbed.
Further, the vehicle seat unit 1 includes a seating sensor, and when the seating on the seat body S is not detected, the time required for transition to the reclined posture and the transition to the standing posture is longer than when the seating is detected. You can shorten it.
Further, the vehicle seat unit 1 may be in the standing posture until the seating on the seat body S is detected, and may shift to the reclined posture when the seating is detected.
Further, the vehicle seat unit 1 may shift from the lying posture to the standing posture when the seating sensor detects that the occupant stands up.
Further, the vehicle seat unit 1 may be provided with a distance sensor for detecting the distance to surrounding members, and may stop changing the posture when the distance to the surrounding members becomes equal to or less than a predetermined distance.

The vehicle seat unit 1 may also include a height mechanism for adjusting the height of the seat cushion 11 . For example, when the vehicle seat unit 1 shifts from the upright posture to the reclined posture, the height mechanism may be used to lower the height of the seat cushion 11 . By doing so, the light outside the vehicle is less likely to enter the eyes of the occupants, so the occupants can be more relaxed.
Further, the vehicle seat unit 1 may be provided with a vertically movable sunshade, and the sunshade may be automatically moved vertically by a movable mechanism as the vehicle seat unit 1 shifts from the upright posture to the reclined posture.

Further, as shown in FIGS. 23A and 23B, the monitor device M is lowered from the vehicle ceiling C and arranged in front of the vehicle seat unit 1 according to the posture change of the vehicle seat unit 1. You can do it.
At this time, the angle of the monitor device M may be adjusted according to the angle of the seat back 10 by making the monitor device M rotatable around the rotation shaft portion M1. That is, as shown in FIGS. 23A and 23B, by changing the angle of the monitor device M according to the angle of the seat back 10, the occupant U can easily see the monitor device M. FIG.

Further, as shown in FIGS. 24A and 24B, the anchor 62 of the seat belt 60 of the vehicle seat unit 1 may be lowered when the vehicle seat unit 1 shifts from the upright posture to the reclined posture. Specifically, the anchor 62 is slidable along a rail 61 extending vertically provided on the vehicle body. The seat belt 60 is fixed to an anchor 62 and a buckle 63 provided on the seat cushion 11 .
Then, as shown in FIG. 24B, when the vehicle seat unit 1 is shifted from the upright posture to the reclined posture, the positions of the anchors 62 are lowered to prevent the distance between the anchors 62 and the occupant U from increasing. , the seat belt 60 can be prevented from being caught on the neck of the occupant U. The anchor 62 may be automatically moved up and down as the vehicle seat unit 1 is changed, or may be manually moved up and down.

Further, as shown in FIGS. 25A and 25B, a front-rear slide rail 70A and a front-rear slide rail 70B that allow the vehicle seat unit 1R and the vehicle seat unit 1L to slide in the front-rear direction, respectively, and a front-rear slide rail 70B that can slide in the seat width direction. A left and right slide rail 71 may be provided. When a side collision occurs with the vehicle, the vehicle seat unit 1R on the side closer to the vehicle door D is slid away from the vehicle door D by the left and right slide rails 71, as shown in FIG. 25B. may At this time, the vehicle seat unit 1R may have an airbag AB on its side, and the airbag AB may be deployed in the gap between the vehicle door D and the vehicle seat unit 1R caused by the lateral sliding movement. .

In addition, as shown in FIG. 26, the vehicle seat unit 1 may be provided with microphones 80A and 80B as voice input units on the upper portion of the seat back 10 and the headrest 13, respectively. The vehicle seat unit 1 may have a voice recognition function for recognizing the voice of the occupant U collected through the microphones 80A and 80B, and the vehicle seat unit 1 may be operated according to voice input. Specifically, the vehicle seat unit 1 can switch between a standing posture and a reclined posture in response to voice input, so that even if the operation switch 31 is difficult to reach in the reclined posture, the standing posture can be changed. It becomes easier to give instructions for transitioning to . In addition, if a structure is provided with a microphone for voice recognition near the occupant's head, such as the headrest 13, the neckrest 14, or the shoulder of the seat, even if the occupant's posture changes, for example, to a lying posture, the voice can be heard. can be made easier to pick up.

1, 1A, 1B, 1L, 1R Vehicle seat unit (seat unit)
2 third row seat 2A seat cushion 2B seat back 2C link mechanism 3 instrument panel 10 seat back 10a seat back upper part 10as side support part 10b seat back lower part 10bs side support part 11 seat cushion 11S side support part 12 ottoman 12S side support part 13 headrest 13A movable Part 13B Center Part 14 Neck Rest 15 Back Movable Mechanism 16 Cushion Movable Mechanism 17 Ottoman Movable Mechanism 18 Headrest Movable Mechanism 19 Neck Rest Movable Mechanism 20 Slide Mechanism 21 Upper Rail 22 Lower Rail 23 Occupant Detection Sensor 24 Temperature Control Part 25 Lumbar Support Mechanism 26 Pressure Sensor 27 Vibration motor 28 First distance sensor 29 Second distance sensor 30 Illuminance sensor 31 Operation switch 32 Supporting member 33 Armrest 33a Shaft 40 ECU (control unit)
41 processor 42 memory 43 input/output interface 50 lighting system 51 movable lighting unit 51A lighting section 51B movable section 52 rotatable lighting unit 52A lighting section 53 speaker 60 seat belt 61 rail 62 anchor 63 buckle 70A front-rear slide rail 70B front-rear slide rail 71 left and right slide rails 80A microphone (voice input section)
80B microphone (voice input section)
AB Airbag C Vehicle ceiling D Vehicle door F Vehicle floor M Monitor device M1 Rotating shaft S Seat main body S1 Occupant support U Occupant V Vehicle

Claims (9)

an occupant support that supports an occupant;
a plurality of movable mechanisms for respectively moving a plurality of portions constituting the occupant support;
a control unit that controls the operation of each of the plurality of movable mechanisms,
When causing each of the plurality of movable mechanisms to transition from the current state to the target state, the control unit calculates a movement amount for transition from the current state to the target state for each of the plurality of movable mechanisms, and calculates the movement amount from the movement amount. calculating the time required to transition each of the plurality of movable mechanisms from the current state to the target state;
The plurality of movable mechanisms have a first movable mechanism with the longest required time required for transition,
The control unit
movement start timing of a movable mechanism other than the first movable mechanism among the plurality of movable mechanisms based on the required time for transitioning each of the plurality of movable mechanisms from the current state to the target state; setting the transition start timing of each of the plurality of movable mechanisms so that the transition is completed before the transition of the first movable mechanism is completed after the movement start timing of the first movable mechanism; 1. A seat unit, wherein transition of a movable mechanism other than the first movable mechanism among the plurality of movable mechanisms is completed by the time one movable mechanism completes transition from a current state to a target state. 2. The seat unit according to claim 1, wherein the control section makes timings for completing the transition from the current state to the target state substantially the same for each of the plurality of movable mechanisms. 3. The seat unit according to claim 1, wherein said plurality of movable mechanisms have slide mechanisms for slidingly moving said occupant support portion. The occupant support further includes a seat back and an ottoman,
The seat unit according to any one of claims 1 to 3, wherein the plurality of movable mechanisms include a back movable mechanism for moving the seat back and an ottoman movable mechanism for moving the ottoman. . further comprising a distance sensor that detects the distance between the ottoman and other members,
5. The seat unit according to claim 4 , wherein the controller controls the ottoman moving mechanism based on the detection result of the distance sensor so that the ottoman does not interfere with other members. The occupant support further includes a rotatably movable seat cushion,
The control unit controls the ottoman moving mechanism based on the detection result of the distance sensor so that the ottoman does not interfere with other members when the seat cushion rotates. Item 6. The seat unit according to item 5. 7. The seat according to claim 6 , wherein the control unit controls the tilt angle of the seat cushion so that the front end of the seat cushion becomes higher than the rear end when the seat cushion rotates. unit. The occupant support further includes a side support,
8. The seat unit according to any one of claims 4 to 7, wherein the side support protrudes so as to support the body of the occupant when the seatback is rotated. It further comprises a voice input unit that accepts voice input from the crew,
The seat unit according to any one of claims 1 to 8, wherein the control section operates the movable mechanism according to the voice input received by the voice input section.

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