JP6155222B2 - Seat control device and vehicle seat - Google Patents

Description

  The present invention relates to a seat control device and a vehicle seat, and more particularly, to a seat control device and a vehicle seat that change the shape of a support surface for an occupant seated on the seat.

  Conventionally, a sheet (Patent Document 1) that changes the shape of the support surface of the sheet and a sheet (Patent Document 2) that mechanically changes the seat back when fully flat are known. Both seats are intended for both ease of use and holdability.

  The multifunctional seat that can comprehensively control the seat surface of Patent Document 1 changes the seat surface for each mode according to when getting on and off, when seat belts are mounted, when reversing, when traveling at high speed, and when fatigue is desired to be reduced. Is. Here, the mode at the time of high-speed driving (side support / hold mode) is to supply air to the air pack of the side support so that the left and right side edges protrude slightly, thereby improving the occupant's holdability with respect to the lateral acceleration of the vehicle. Is.

Japanese Patent No. 3551453 JP 2007-301222 A

  In the above-mentioned Patent Document 1, the mode at the time of high-speed driving is effective only for a driver who takes a posture against the lateral acceleration of the vehicle in which the posture of the body is generated by operating the steering wheel. Since the handle is not gripped, only the movement of the chest is restricted by the side support, so that the head is moved in the roll direction around the base of the neck, and there is a problem that the physical burden increases.

  In addition, the vehicle seat device capable of seat arrangement that is easy to relax while fully flat while securing the holdability during traveling of Patent Document 2 is used when the seat back is moved backward (the seat is full). When flat, the displacement mechanism displaces the backrest in a direction that eliminates the step with the side support, so that the occupant pays attention only to the shape of the seatback on the seat and contributes to the physical burden. It is not a method of suppressing head shaking.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a seat control device and a vehicle seat that can improve the riding comfort of a passenger.

  In order to achieve the above object, a seat control device according to a first aspect of the present invention includes a shape of a support surface of a seat backrest portion with respect to an upper body portion of an occupant and a support surface of the headrest of the seat with respect to an occupant head portion. The shape of the support surface of the backrest and the shape of the support surface of the headrest are reduced as the angle between the surface shape changing means for changing the shape of the seat and the input seat portion of the seat and the backrest portion of the seat is smaller. And a control means for controlling the surface shape varying means so as to be recessed.

  According to the first aspect of the invention, the shape of the backrest of the seat, the shape of the support surface of the occupant to the upper body, and the shape of the support surface of the headrest of the seat with respect to the head of the occupant are varied by the surface shape changing means. The surface of the seatrest and the support surface of the headrest are recessed as the angle between the seat portion of the seat and the backrest portion of the seat input by the control means decreases. Controls the shape variable means.

  As described above, the smaller the angle between the seat portion of the seat and the back portion of the seat, the smaller the angle of the support surface of the back portion and the shape of the support surface of the headrest, so that the occupant of the seat back portion is recessed. By controlling the shape of the support surface for the upper body part and the shape of the support surface of the headrest of the seat for the occupant's head so that the posture is supported according to the reclining angle, the ride comfort of the occupant Can be improved.

  The seat control device according to the first aspect of the present invention further includes a correction unit, wherein the surface shape changing unit includes a shape of two support parts arranged in the left-right direction of the support surface of the backrest part, and the headrest. The shape of the two support portions of the backrest portion of the backrest portion is smaller as the angle between the seat portion of the seat and the backrest portion of the seat is smaller. And the surface shape changing means is controlled so that the shape of the support surface of the headrest is recessed, and the correction means is configured to control the two support surfaces of the support surface of the backrest portion in accordance with an input lateral acceleration of the vehicle. Control that controls the surface shape changing means by the control means so that the shape of one support portion corresponding to the direction in which the lateral acceleration is generated is recessed and the shape of the other support portion is not recessed. amount It may be corrected.

  In the seat control device according to the first aspect of the invention, the surface shape changing means may include a shape of a support surface of the backrest portion of the upper body portion of the occupant and a shape of the support surface of the headrest. It may be variable.

  In the seat control device according to the first aspect of the invention, the surface shape changing means changes the shape of the support surface of the backrest portion by changing the deflection of the support surface of the backrest portion, By changing the deflection of the support surface, the shape of the support surface of the headrest is changed, and the control means reduces the angle of the backrest portion as the angle between the seat portion of the seat and the backrest portion of the seat decreases. The surface shape varying means may be controlled so that the deflection of the support surface and the deflection of the support surface of the headrest are increased.

  A vehicle seat according to a second aspect of the invention includes the seat control device according to the first aspect of the invention and a seat on which an occupant is seated.

  As described above, according to the seat control device and the vehicle seat of the present invention, the smaller the angle between the seat portion of the input seat and the back portion of the seat, the more the shape of the support surface of the back portion and the headrest By controlling the backrest of the seat so that the shape of the support surface is recessed, the shape of the support surface of the occupant's upper body, and the shape of the support surface of the headrest of the seat with respect to the head of the occupant are variable. , The ride comfort of the occupant can be improved.

It is a figure which shows the example of application of a headrest. It is the schematic which shows the vehicle seat which concerns on the 1st Embodiment of this invention. It is a block diagram which shows the functional structure of the vehicle seat which concerns on the 1st Embodiment of this invention. It is a figure which shows the relationship between a reclining angle and a pressure command value. It is a block diagram which shows the functional structure of the drive device which concerns on the 1st Embodiment of this invention. It is a figure which shows the seat control processing routine in the vehicle seat which concerns on the 1st Embodiment of this invention. It is a figure which shows the example of the relationship between the acceleration of a left-right direction, and the surface shape of a sheet | seat. It is the schematic which shows the vehicle seat which concerns on the 2nd Embodiment of this invention. It is a block diagram which shows the functional structure of the vehicle seat which concerns on the 2nd Embodiment of this invention. It is a figure which shows the example of the relationship between a reclining angle and a correction coefficient. It is a block diagram which shows the functional structure of the drive device which concerns on the 2nd Embodiment of this invention. It is a figure which shows the seat control processing routine in the vehicle seat which concerns on the 2nd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

<Principle of the vehicle seat according to the first embodiment>
First, the principle of controlling the deflection of the support surface by the vehicle seat 100 according to the first embodiment of the present invention will be described.

  Fig. 1 shows the lateral acceleration of the head (upper part of Fig. 1) and the roll rate when the lateral accelerating of the rear seat occupant is given to the rear seat occupant when the occupant's headrest material is soft and hard. And shows the time series waveform of yaw rate. The movement of the chest is the same for both. When the material of the headrest is soft, the peak (B, C) of the head yaw rate and roll rate is sharp, and the burden on the neck is large. On the other hand, when the material of the headrest is hard, the head slides sideways, and the peak (B ′, C ′) of the yaw rate and roll rate is reduced. Therefore, it acts on the neck rotational motion and the neck translational motion. The rotational movement of the neck is reduced and the burden on the neck is reduced.

  Thus, when the relative movement of the head with respect to the chest increases, human discomfort (body burden) increases, so in the vehicle seat in the first embodiment, the deflection of the support surface of the headrest and the seat Simultaneously change the deflection of the back support surface to reduce the relative movement of the chest and head.

  Here, with respect to the headrest, since the left-right movement of the head is promoted by changing the surface contact with the head of the occupant to the point contact, the head yaw rate and the roll rate are suppressed. Further, with respect to the seat back, the support surface becomes flat, and the lateral movement of the occupant's torso is promoted, thereby reducing the relative movement between the chest and the head and reducing the burden on the occupant's head as a whole.

  Further, when the seat reclining angle is within the angle range of the comfortable posture where the passenger's headrest starts to be used, the head roll motion component greatly contributes to the physical burden. In the case of a conventional seat comfort posture, the seatback top plate has a small shoulder load with respect to the waist, so the chest and head centered on the waist and the vehicle roll against the lateral acceleration of the vehicle during steering. Easy to move in the direction.

  Therefore, in the present embodiment, the deflection of the seat back top plate and the headrest is increased, the support load of the upper portion of the seat back is increased, the deflection of the central portion of the headrest is also increased, and the step with the side is increased. .

  In this way, by changing the deflection of the seat back top plate and the headrest, when the lateral acceleration (centrifugal force) of the vehicle accompanying steering acts on the chest, the shoulder rib on the action direction side sinks more into the seat back top plate. As the load on the upper back increases, the roll motion component of the chest decreases and the yaw motion component in the direction opposite to the vehicle turning increases. That is, the roll moment acting on the head caused by the movement of the chest can be reduced by increasing the yaw motion with low sensitivity of the burden (body burden) associated with body shaking and suppressing the chest roll motion. In addition, since the deflection of the center of the headrest is large, when the lateral acceleration (centrifugal force) of the vehicle acts on the head, the head immediately contacts the side of the headrest, increasing the yaw motion component in the same direction as the chest, and roll motion Ingredients decrease. As a result, in an easy posture that starts using the headrest, increasing the yaw movement with low body burden sensitivity suppresses the head roll movement with high body burden sensitivity, which can greatly reduce the body burden. it can.

  Moreover, in the sleeping posture with a large reclining angle, the head yaw movement component mainly contributes to the physical burden. However, when the reclining angle is increased in the conventional seat, the gravity component of the mass of the head and chest is added to the seat back top plate and the headrest, and the supporting load acting on each is increased. Therefore, the increase in the drag (frictional force) between the head and chest according to the support load against the lateral acceleration of the vehicle makes the head and chest difficult to move in the lateral direction and is likely to move in the yaw direction. As a result, the physical burden increases. Therefore, the deflection of the seat back top plate is reduced, the contact area of the shoulder rib is reduced, the deflection of the central portion of the headrest is reduced, and the step with the side is reduced.

  In this way, when the lateral acceleration (centrifugal force) of the vehicle accompanying steering is applied by changing the seat back top plate and the headrest to have a small deflection, the lateral drag (frictional force) of the head and chest is applied. Becomes smaller and easier to skid. That is, the rotational component of the yaw motion and the roll motion is reduced by the increase of the lateral motion. As a result, the yaw movement of the head in a sleeping posture with a large reclining angle can be suppressed, so that the physical burden can be greatly reduced. In this way, adapting to the reclining angle, changing the deflection between the back of the occupant of the seat back top and the headrest, and controlling the direction of the occupant's body shaking, greatly improving the ride comfort of the occupant Can do.

  Specifically, when the occupant reclines the seat, based on the reclining angle, a pressure command value Pc for calculating the deflection between the seat back top plate and the headrest that matches the reclining angle is calculated, and the pressure command Based on the value Pc, the pressure of the backrest top plate and the headrest can be set to the same pressure as the pressure command value Pc. Thereby, the deflection | deviation of the seat back top plate and headrest suitable for a reclining angle is implement | achieved.

<Configuration of Vehicle Seat according to First Embodiment>
Next, the configuration of the vehicle seat 100 according to the first embodiment of the present invention will be described.

  As shown in FIG. 2, the vehicle seat 100 according to the first embodiment of the present invention is provided on the right side of the vehicle in the seat back and the seat back top plate 2 including the support surfaces of the left and right shoulder ribs of the occupant. The air pack 3 provided on the left side of the vehicle in the seat back, the air pack 5 provided on the headrest, the headrest 6 including the support surface of the head of the occupant, and the state detection unit 10 The angle sensor 11, the control unit 22, the drive device 30, and the pipe line 60 are provided. FIG. 3 is a block diagram showing the function of the vehicle seat 100 according to the first embodiment of the present invention. The control unit 22 is realized by an electronic control unit (ECU), and includes a pressure command value calculation unit 20 and a drive device control unit 23. The combination of the control unit 22 and the drive device 30 is an example of the sheet control device. Further, the air pack 3 to the air pack 5 are examples of the support portion. Further, it is assumed that an occupant is seated on the vehicle seat 100. Further, the right side of the vehicle is the right side in the left-right direction when the traveling direction of the vehicle is the front direction, and the left side of the vehicle is the left side in the left-right direction when the traveling direction of the vehicle is the front direction.

  The state detection unit 10 receives the reclining angle θr of the vehicle seat 100 input from the angle sensor 11. The reclining angle θr is an example of the angle between the seat portion of the seat and the backrest portion of the seat.

  The pressure command value calculation unit 20 calculates the pressure command values Pc of the air packs 3, 4 and 5 based on the reclining angle θr of the vehicle seat 100 received by the state detection unit 10. The smaller the reclining angle θr, the lower the pressure of the air packs 3 and 4 of the seat back to increase the deflection of the upper back portion (A portion in FIG. 2) of the seat back top plate 2 including the left and right shoulder ribs, and at the same time the headrest The pressure command value Pc is calculated to reduce the pressure of the air pack 5 of 6 and to increase the step with the side by bending the concave portion of the center of the headrest 6. Further, as the reclining angle θr is larger, the pressure of the air packs 3 and 4 of the seat back is increased to reduce the deflection of the upper back portion (A portion in FIG. 2) of the seat back top plate 2 including the left and right shoulder ribs, At the same time, the pressure of the air pack 5 of the headrest 6 is also increased to reduce the deflection of the central portion of the headrest 6 and calculate the pressure command value Pc that realizes a reduction in the level difference on both sides. Specifically, based on the relationship between the reclining angle θr and the pressure command value Pc as shown in FIG. 4, the air pack 3 to the air corresponding to the reclining angle θr of the vehicle seat 100 received by the state detection unit 10. A pressure command value Pc for the pack 5 is calculated. Accordingly, for example, in the reclining angle region in the comfortable posture where the headrest 6 is started to be used, the pressure on the air packs 3 and 4 of the seat back is lowered to include the upper back portion of the seat back top plate 2 including the left and right shoulder ribs (FIG. 2). (A part) of the headrest 6 is increased at the same time, and the pressure of the air pack 5 of the headrest 6 is lowered at the same time, so that the central portion of the headrest 6 is bent and the step with the side is increased. Further, in the sleeping posture in which the reclining angle θr is maximized, the pressure of the air packs 3 and 4 of the seat back is increased, and the upper back of the seat back top plate 2 including the left and right shoulder ribs (part A in FIG. 2) is bent. At the same time, the pressure of the air pack 5 of the headrest 6 is also increased, so that the deflection of the central portion of the headrest 6 is reduced and the steps are reduced with respect to both sides.

  The drive device control unit 23 controls the drive device 30 so that each of the air packs 3, 4, and 5 of the vehicle seat 100 has the same pressure as the pressure command value Pc calculated by the pressure command value calculation unit 20. To do.

  As shown in FIG. 5, the drive device 30 includes a drive amplifier 31, an air pump 40, a relief valve 50, a relief valve 51, and a relief valve 52. The air pump 40 and the relief valve 50 to the relief valve 52 are connected by a pipeline 60, and the relief valve 50 to the relief valve 52 and the air pack 3 to the air pack 5 are connected by a pipeline 60. . The driving device 30 is an example of a surface shape changing unit.

  The drive amplifier 31 is based on the value of the pressure command value Pc input from the control unit 22 so that the pressures of the air packs 3 to 5 are the same as the pressure command value Pc. Drive. In addition, by driving the relief valve 50 to the relief valve 52, air is supplied from the pipeline 60 to each of the air packs 3 to 5 and the air is discharged from the pipeline 60.

  The air pump 40 sends air through the pipe line 60 to the air packs 3 to 5 based on the command of the control unit 22.

<Operation of the vehicle seat according to the first embodiment>
Next, the operation of the vehicle seat 100 according to the first embodiment of the present invention will be described. First, when the reclining angle θr of the vehicle seat 100 is sequentially detected by the state detection unit 10, the CPU executes a program stored in the ROM of the vehicle seat 100, whereby the seat shown in FIG. A control processing routine is executed.

  First, in step S100, based on the reclining angle θr detected by the state detector 10, the pressure command values of the air packs 3 to 5 are determined according to the relationship between the reclining angle θr and the pressure command value Pc shown in FIG. Pc is calculated.

  Next, in step S102, based on the pressure command value Pc acquired in step S100, the drive device 30 is controlled to supply or discharge air to the air packs 3 to 5, and the process proceeds to step S100. Steps S100 to S102 are repeated.

  As described above, according to the vehicle seat according to the first embodiment of the present invention, the smaller the angle between the seat portion of the input seat and the seat back portion, the more the shape of the support surface of the back portion. And the shape of the support surface of the seat backrest to the upper body part of the occupant and the shape of the support surface of the headrest of the seat to the head of the occupant so that the shape of the support surface of the headrest is recessed. By controlling, the posture is supported according to the reclining angle, so that the ride comfort of the occupant can be improved.

  Note that the present invention is not limited to the above-described embodiment, and various modifications and applications are possible without departing from the gist of the present invention.

  For example, in the first embodiment, the case where the surface shape of the seat back top plate and the headrest is changed by the pressure of the air pack is described, but the present invention is not limited to this, and the spring, rigidity, etc. The surface shapes of the seat back top plate and the headrest may be changed by control. For example, the smaller the angle between the seat portion of the input seat and the seat back portion, the lower the spring constant or stiffness of the support surface of the seat back top plate and the spring constant or stiffness of the support surface of the headrest, You may change the surface shape of a seat back top plate and a headrest.

  Next, the vehicle seat according to the second embodiment will be described.

  The second embodiment is different from the first embodiment in that each pressure command value of the air pack of the seat back top plate is corrected according to the lateral acceleration of the vehicle. In addition, about the structure and effect | action similar to the vehicle seat which concerns on 1st Embodiment, the same code | symbol is attached | subjected and description is abbreviate | omitted.

<Principle of the vehicle seat according to the second embodiment>
The principle of controlling the deflection of the support surface by the vehicle seat 300 according to the second embodiment of the present invention will be described.

  In the vehicle seat 300 according to the second embodiment, a correction coefficient corresponding to the magnitude of the lateral acceleration is applied to the pressure command value Pc of the air pack of the seat back top plate on the side where the lateral acceleration of the vehicle acts. Multiply the pressure command value to increase the sinking to the shoulder rib top plate. At the same time, the pressure command value Pc of the opposite air pack is multiplied by a correction coefficient corresponding to the magnitude of the lateral acceleration to increase the pressure command value Pc, thereby reducing the sinking into the top plate of the shoulder rib. That is, the upper back portion of the seat back top plate with respect to the acceleration direction in the left-right direction bends as shown in FIG. 7, and the occupant's chest performs yaw motion.

  As a result, when the lateral acceleration (centrifugal force) of the vehicle accompanying steering acts on the chest, the yaw motion component of the chest can be increased in the opposite direction to the vehicle turning compared to before correction of the pressure command value. As a result, as the yaw motion increases, the chest roll motion is further suppressed compared to before correction of the pressure correction value, and the roll moment acting on the head can be greatly reduced. As a result, the roll motion of the head in an easy posture that starts using the headrest is further suppressed, so that the physical burden can be greatly reduced. Further, since the pressure command value Pc of the air pack of the backrest top plate is corrected according to the magnitude of the lateral acceleration of the vehicle, the pressure command value Pc of the air pack is also attenuated together with the attenuation of the lateral acceleration of the vehicle. The yaw motion is also attenuated.

  Specifically, when the occupant reclines the seat, a pressure command value Pc for calculating the deflection between the seat back top plate and the headrest suitable for the reclining angle is calculated and detected based on the reclining angle. The pressure command value Pc is corrected using a correction coefficient calculated based on the lateral acceleration of the vehicle. And based on the pressure command value after correction | amendment, the pressure of the right and left air packs of a backrest top plate is changed, and the deflection | deviation of the seat back top plate suitable for a reclining angle and operation | movement of a vehicle is implement | achieved.

<Configuration of Vehicle Seat According to Second Embodiment>
As shown in FIG. 8, a vehicle seat 300 according to the second embodiment of the present invention is provided on the right side of the vehicle in the seat back and the seat back top plate 2 including the support surfaces of the left and right shoulder ribs of the occupant. The air pack 3, the air pack 4 provided on the left side of the vehicle in the seat back, the air pack 5 provided on the headrest, the headrest 6 including the support surface of the head of the occupant, and the state detection unit 410 The angle sensor 11, the lateral acceleration sensor 12, the control unit 422, the driving device 430, and the pipeline 60 are provided. FIG. 9 is a block diagram showing the function of the vehicle seat 300 according to the second embodiment of the present invention. The control unit 422 is realized by an electronic control unit (ECU), and includes a pressure command value calculation unit 20, a correction unit 421, and a drive device control unit 423.

  The state detection unit 410 receives the reclining angle θr of the vehicle seat 300 input from the angle sensor 11 and the lateral acceleration in the left-right direction when the traveling direction of the vehicle input from the lateral acceleration sensor 12 is the front direction.

  Based on the lateral acceleration and reclining angle θr of the vehicle received by the state detection unit 410 and the pressure command value Pc calculated by the pressure command value calculation unit 20, the correction unit 421 receives the pressure command of the air pack 3. A value Pc3 and a pressure command value Pc4 of the air pack 4 are calculated. Specifically, first, the direction in which the lateral acceleration of the vehicle acts is specified. Next, based on the lateral acceleration and the reclining angle θr received by the state detection unit 410, the reclining angle θr and the correction coefficient K1 (≦ 1) determined for each lateral acceleration magnitude Gy as shown in FIG. According to the relationship with K2 (≧ 1), correction coefficients K1 and K2 corresponding to the lateral acceleration and the reclining angle θr are calculated. Next, a value obtained by multiplying the pressure command value Pc by the correction coefficient K1 is calculated as the pressure command value of the air pack on the side corresponding to the direction in which the lateral acceleration is generated, and the correction coefficient is added to the pressure command value Pc. The value multiplied by K2 is calculated as the pressure command value of the other air pack. In FIG. 10, the correction coefficients K1 and K2 approach a value of 1 as the reclining angle θr increases. Further, the pressure command value Pc is an example of a control amount.

  The drive control unit 423 determines that the air pack 3 of the vehicle seat 300 has the same pressure as the pressure command value Pc3, the air pack 4 has the same pressure as the pressure command value Pc4, and the air pack 5 has the pressure command value Pc. The driving device 430 is controlled so as to be the same pressure as the above.

  As shown in FIG. 11, the drive device 430 includes a drive amplifier 431, an air pump 40, a relief valve 50, a relief valve 51, and a relief valve 52.

  The drive amplifier 431 drives the relief valves 50 to 52 based on the pressure command value Pc3, the pressure command value Pc4, and the pressure command value Pc input from the control unit 422.

<Operation of the vehicle seat according to the second embodiment>
Next, the operation of the vehicle seat 300 according to the second embodiment of the present invention will be described. First, when the reclining angle θr of the vehicle seat 300 and the lateral acceleration of the vehicle are sequentially detected by the state detection unit 410, the CPU executes a program stored in the ROM of the vehicle seat 300. Thus, the sheet control processing routine shown in FIG. 12 is executed. In the seat control processing routine in the second embodiment, a case where lateral acceleration is generated in the right direction will be described. When lateral acceleration is generated in the left direction, the processing can be realized by replacing the air pack 3 and the pressure command value Pc3 with the air pack 4 and the pressure command value Pc4.

  In step S200, the direction of the lateral acceleration acquired by the state detection unit 410 is specified. For example, it is specified that the lateral acceleration is generated in the right direction.

  Next, in step S202, correction coefficients K1 and K2 are calculated based on the lateral acceleration and the reclining angle θr acquired by the state detection unit 410.

  Next, in step S204, the value obtained by multiplying the pressure command value Pc acquired in step S100 by the correction coefficient K1 is used as the pressure command value Pc3 of the air pack 3, and the pressure command value Pc acquired in step S100 is multiplied by the correction coefficient K2. The calculated value is calculated as the pressure command value Pc4 of the air pack 4.

  Next, in step S206, the air pack 5 is supplied or discharged based on the pressure command value Pc acquired in step S100, and the air pack 3 is supplied with air based on the pressure command value Pc3 acquired in step S204. The drive device 430 is controlled to cause the air pack 4 to supply or discharge air based on the pressure command value Pc4 acquired in step S204, and the process proceeds to step S100. The process of step S206 is repeated.

  As described above, according to the vehicle seat according to the second embodiment of the present invention, the left and right acting on the left and right shoulder ribs of the occupant based on the input seat reclining angle and the lateral acceleration of the vehicle. The ride comfort of the occupant can be improved by controlling the drive device so that each of the support surfaces is variable.

  Note that the present invention is not limited to the above-described embodiment, and various modifications and applications are possible without departing from the gist of the present invention.

  In the present specification, the program has been described as an embodiment in which the program is installed in advance. However, the program can be provided by being stored in a computer-readable recording medium or provided via a network. Is also possible.

2 seat back top plate 3 air pack 4 air pack 5 air pack 6 headrest 10 state detection unit 11 angle sensor 12 lateral acceleration sensor 20 pressure command value calculation unit 22 control unit 23 drive unit control unit 30 drive unit 31 drive amplifier 40 air pump 50 Relief valve 51 Relief valve 52 Relief valve 60 Pipe line 100 Vehicle seat 300 Vehicle seat 410 State detection unit 421 Correction unit 422 Control unit 423 Drive device control unit 430 Drive device 431 Drive amplifier

Claims (5)

A surface shape changing means for changing a shape of a support surface of the seat backrest with respect to the upper body portion of the occupant and a shape of the support surface of the headrest of the seat with respect to the head of the occupant;
The surface shape changing means is controlled so that the smaller the angle between the seat portion of the seat and the backrest portion of the seat that is input, the concave the shape of the support surface of the backrest portion and the shape of the support surface of the headrest. Control means to
Including a seat control device. A correction means,
The surface shape varying means varies the shape of two support portions arranged in the left-right direction of the support surface of the backrest portion, and the shape of the support surface of the headrest,
In the control means, the smaller the angle between the seat portion of the seat and the backrest portion of the seat, the more the shape of the two support portions of the support surfaces of the backrest portion and the shape of the support surface of the headrest. Controlling the surface shape changing means so as to be recessed,
According to the lateral acceleration of the input vehicle, the correction means has a shape of one support portion corresponding to the direction in which the lateral acceleration is generated, of the two support portions of the support surface of the backrest portion. 2. The sheet control apparatus according to claim 1, wherein the control means corrects a control amount for controlling the surface shape changing means by the control means so that the shape of the other support portion is not recessed.   3. The seat control device according to claim 1, wherein the surface shape changing unit is configured to change a shape of a support surface of the backrest portion with respect to an upper back portion of an upper body portion of an occupant and a shape of the support surface of the headrest. . The surface shape varying means varies the shape of the support surface of the backrest by varying the deflection of the support surface of the backrest, and varies the deflection of the support surface of the headrest, Changing the shape of the support surface of the headrest,
The control means may change the surface shape so that the smaller the angle between the seat portion of the seat and the backrest portion of the seat, the greater the deflection of the support surface of the backrest portion and the deflection of the support surface of the headrest. The sheet control apparatus according to any one of claims 1 to 3, which controls the means. The seat control device according to any one of claims 1 to 4,
A seat for the passenger to sit on;
Vehicle seat including.