JP6497182B2 - Driving posture adjustment device for autonomous driving vehicle - Google Patents

Description

  The present invention relates to a driving posture adjusting device that can change the posture of a driver while driving an autonomous driving vehicle.

  In an automatic driving vehicle that automatically travels without requiring a steering operation and pedal operation by a driver, it may be desired to change the sitting posture when the driving time is long. For example, a device disclosed in Patent Document 1 is known as a driving posture adjusting device that can change the driving posture.

  In Patent Document 1, the driver seat seated in the driver's seat is recovered from fatigue by the seat back of the driver's seat being inclined backward and the seat seat surface being inclined obliquely downward in the front. It is described.

Patent No. 5179798

  However, the conventional example disclosed in Patent Document 1 described above is a configuration in which the seat seat surface of the driver's seat changes, and discloses that the footrest portion (also referred to as “footrest”) used during automatic driving is changed. It has not been. Therefore, there is a problem that when it is desired to extend the lower limb by driving for a long time, it cannot be easily extended.

  The present invention has been made to solve such conventional problems, and an object of the present invention is to provide a driving posture adjusting device for an autonomous driving vehicle in which a driver can easily extend a lower limb. There is to do.

In order to achieve the above object, the present invention provides an information presentation unit for presenting to the driver that automatic driving is being performed at the time of execution of automatic driving, and a posture change intention determining unit for detecting the intention of the driver to change posture. And comprising. Furthermore, when a movable part that changes the driver's posture and the driver's intention to change the posture are detected, the movable part is unlocked, and automatic driving is not being detected or the driver's intention to change the posture is detected. A movable control unit that controls the movable unit not to be unlocked when the movable unit is not unlocked .

  In the driving posture adjusting apparatus according to the present invention, when the vehicle is traveling in an automatic driving, the information presenting unit indicates that no operation by the driver is necessary. When the driver's intention of driving posture is detected, the movable control unit moves the movable unit. Therefore, the driver can change the posture when sitting in the driver's seat, and can easily extend the lower limbs.

It is explanatory drawing which shows typically the vehicle by which the driving posture adjustment apparatus which concerns on embodiment of this invention is mounted. 1 is a block diagram showing an electrical configuration of a driving posture adjusting apparatus according to an embodiment of the present invention. It is a flowchart which shows the process sequence of the driving posture adjustment apparatus which concerns on 1st Embodiment of this invention. It is explanatory drawing which shows a mode that the inclination angle of the footrest part and the inclination angle of the seat seat surface of the driving posture adjustment apparatus which concerns on embodiment of this invention were changed. It is explanatory drawing which shows a mode that a driver | operator relaxes by changing the inclination-angle of a footrest part and the inclination-angle of a seat seat surface of the driving posture adjustment apparatus which concerns on embodiment of this invention. It is explanatory drawing which shows a mode that the up-and-down position of the footrest part and the inclination-angle of the seat seat surface of the driving posture adjustment apparatus which concerns on embodiment of this invention were changed. It is explanatory drawing which shows a mode that the front-and-back seat seat surface was slid by changing the front-back position of the footrest part of the driving posture adjustment apparatus which concerns on embodiment of this invention. It is explanatory drawing which shows a mode that the inclination angle of the footrest part and the inclination angle of the seat seat surface of the front side were changed of the driving posture adjustment apparatus which concerns on the modification of this invention. It is explanatory drawing which shows the mode of the state change of a seat seat surface of the driving posture adjustment apparatus which concerns on embodiment of this invention. It is explanatory drawing which shows the operation | movement which detects the intention of a posture change of the driving posture adjustment apparatus which concerns on embodiment of this invention. It is explanatory drawing which shows the operation | movement which detects the intention of a posture change of the driving posture adjustment apparatus which concerns on embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[Description of Configuration of First Embodiment]
FIG. 1 is an explanatory diagram schematically showing a configuration around a driver's seat of an automatic driving vehicle equipped with a driving posture adjusting apparatus according to an embodiment of the present invention. FIG. 2 is a block diagram showing a detailed configuration of the controller 50 shown in FIG.

  An autonomous driving vehicle has a function of driving a vehicle on behalf of operations performed by a normal driver such as a steering operation and a pedal operation, and the driver sits in a driver's seat and does not perform a driving operation. Can be run.

  As shown in FIG. 1, a driver's seat 10 is provided in a driver's seat of an autonomous driving vehicle 100 (hereinafter abbreviated as “vehicle 100”), and the driver D1 is seated on the seat 10. It is comprised from the seat seat surface 11 and the seat back 12 used as the backrest of the driver | operator D1. Further, a steering wheel 20 is provided in front of the driver D1, and a footrest portion 14 (for the driver D1 to put his / her foot on when the automatic driving control is being executed is performed on the floor 15 below the steering wheel 20). Also called “footrest”. Two footrests 14 for the left foot and for the right foot are provided. In the figure, only one is shown. In addition, this invention is not limited to this, It is good also as only one footrest part 14. FIG.

  Furthermore, the controller 50 which controls the attitude | position change of driver | operator D1 collectively is provided. As shown in FIG. 2, the controller 50 includes an attitude change intention determination unit 51, a movable control unit 52, and an information presentation control unit 53. Furthermore, an input unit 55 that receives an input operation by a vehicle occupant is connected to the posture change intention determination unit 51. The information presentation control unit 53 is connected to a display unit 54 (information presentation unit) that displays various types of information, in particular, information for notifying that automatic driving is being performed when automatic driving is performed. Details of the controller 50 will be described later. The controller 50 can be configured as an integrated computer including a central processing unit (CPU), storage means such as RAM, ROM, and hard disk.

  As shown in FIG. 1, the footrest portion 14 includes a load sensor 25 (denoted as “footrest portion load sensor” in the drawing) that detects a load when the foot of the driver D1 is placed on the placement surface. Is provided. The load data detected by the footrest load sensor 25 is output to the attitude change intention determination unit 51 of the controller 50.

  The seat seat surface 11 is provided with a seat seat surface load sensor 26 that detects a load applied to the seat seat surface 11. Similarly, the seat back 12 is provided with a seat back load sensor 27 that detects a load applied to the seat back 12. The load data detected by the seat seat surface load sensor 26 and the seat back load sensor 27 is output to the attitude change intention determination unit 51 of the controller 50, respectively.

  Then, the posture change intention determination unit 51 includes a load detected by the load sensor 25 of the footrest unit 14, a load detected by the seat seat surface load sensor 26, and a load detected by the seat back load sensor 27. Based on at least one, it is determined whether or not the driver D1 has an intention to change the posture. For example, when the load applied to the footrest 14 (the load detected by the load sensor 25) is large and the load applied to the seat back (the load detected by the seat back load sensor 27) is large, The driver D1 determines that he is trying to stretch his body and determines that he is willing to change his posture. Details will be described later.

  On the other hand, the footrest portion 14 is provided with a footrest movable mechanism 24 (movable portion) that changes the inclination angle, the vertical position, and the front-back position of the footrest portion 14. Specifically, the footrest moving mechanism 24 has a function of changing the inclination angle with the heel part of the footrest part 14 (the part where the heel of the driver D1 is placed, Q1 in FIG. 4 described later) as a fulcrum. Furthermore, it has a function of sliding the entire footrest portion 14 in the front-rear direction and a function of moving the footrest portion 14 up and down.

  Further, the footrest moving mechanism 24 is provided with a lock function for locking the movement. The footrest movable mechanism 24 is connected to the movable control unit 52 of the controller 50 shown in FIG. 2, and the movable lock and unlock are switched under the control of the movable control unit 52. That is, when the footrest moving mechanism 24 is unlocked, the driver D1 can arbitrarily change the inclination angle, the front and rear position, and the vertical position of the footrest 14, so that the lower limbs and toes can be expanded and contracted. It becomes possible. Further, when the footrest moving mechanism 24 is locked, the inclination angle, the front and rear position, and the vertical position of the footrest 14 are fixed at a reference position suitable for driving operation, and the lower limbs and the toes cannot be expanded and contracted. .

  In addition, the footrest moving mechanism 24 can be in any of a state in which the inclination angle, the front-rear position, and the vertical position of the footrest 14 can be actively moved or can be changed by a driver's operation. When actively moving, the inclination angle of the footrest part 14 is changed to a preset inclination angle, and the front-rear position and the vertical position are changed to a preset position. On the other hand, when the changeable state is set, it is possible to appropriately change the inclination angle, the front-rear position, and the vertical position of the footrest portion 14 by a driver's operation.

  The seat seat surface 11 is provided with a seat seat surface movable mechanism 28 (movable portion) for changing the seat seat surface 11. The seat seat surface movable mechanism 28 changes the inclination angle of the seat seat surface 11. Further, the seat seat surface 11 is divided into two in the front-rear direction, and among these, the front seat seat surface 11b can be inclined or translated with respect to the rear seat seat surface 11a (see below). 9 (d)).

  FIG. 9 is an explanatory diagram schematically showing a situation in which the seat seat surface 11 changes. As shown in FIG. 9A, the seat seat surface 11 is inclined upward with the fulcrum P1 as the center, and is inclined downward as shown in FIG. 9B. Further, when the seat is divided into the rear seat seat surface 11a and the front seat seat surface 11b, as shown in FIG. 9C, the front seat seat surface 11b is centered on the fulcrum P2 and the rear seat seat surface 11a. Tilt against. Further, as shown in FIG. 9 (d), the front seat surface 11b moves in parallel to the rear seat surface 11a at the slide portion R1. These changes are controlled by the seat seat surface movable mechanism 28. The seat seat surface 11 according to the present embodiment has at least one of the functions shown in FIGS. 9A, 9B, 9C, and 9D.

  Note that the seat seat surface movable mechanism 28 can be either in a state in which the inclination angle can be actively moved or in a state that can be changed by the operation of the driver D1, similarly to the footrest movable mechanism 24 described above. it can. In the case of active movement, the inclination angle of the seat seat surface 11 is changed to a preset inclination angle, for example, an angle suitable for reclining. On the other hand, when it is in a changeable state, the inclination angle of the seat seat surface 11 is appropriately changed by a driver's operation. As shown in FIGS. 9 (c) and 9 (d), the case where the seat is divided into two seat seat surfaces 11a and 11b is similarly changed actively and changed by the driver D1. can do.

In the following description, an example in which the inclination angle of the footrest portion 14 and the inclination angle of the seat seat surface 11 can be changed by the operation of the driver D1 will be described.
[Description of Operation of First Embodiment]
Hereinafter, the operation of the driving posture adjusting apparatus according to the present embodiment will be described. In the present embodiment, when it is determined that the vehicle is automatically driven and the driver D1 intends to change the posture, the footrest movable mechanism 24 and the seat seat surface movable mechanism 28 are unlocked. Thus, the driver can extend the lower limbs.

  FIG. 3 is a flowchart illustrating a processing procedure performed by the driving posture adjusting apparatus according to the first embodiment. This process is executed by the controller 50 shown in FIG.

  First, in step S11 of FIG. 3, the controller 50 determines whether or not the vehicle 100 is currently traveling in automatic driving. If automatic operation is in progress (YES in step S11), the process proceeds to step S12. If automatic operation is not in progress (NO in step S11), the process proceeds to step S16.

  In step S12, the information presentation control unit 53 displays on the display unit 54 that the driving operation by the driver D1 is unnecessary, and informs the driver D1 of this content.

  In step S13, the posture change intention determination unit 51 determines whether the driver has an intention to change posture. Hereinafter, an example of determining the presence / absence of posture change will be described with reference to schematic diagrams shown in FIGS. 10 (a) to 10 (c) and FIGS. 11 (a) to 11 (c).

  In FIG. 10A, a load exceeding a predetermined value is detected by the load sensor 25 of the footrest portion 14, and the increase or decrease of the load detected by the seat seat surface load sensor 26 exceeds the predetermined value. In this case, it is determined that there is an intention to change the posture. For example, when the driving time is a long time, the driver D1 wants to extend his lower limbs or toes. In such a case, the load applied to the footrest 14 is inevitably increased. In addition, the load applied to the seat seat surface 11 changes. Therefore, in such a case, it is determined that there is an intention to change the posture.

  FIG. 10B shows a case where a load exceeding a predetermined value is detected by the load sensor 25 of the footrest 14 and the increase or decrease of the load detected by the seatback load sensor 27 exceeds the predetermined value. Then, it is determined that there is an intention to change the posture. In other words, when the driver D1 extends his / her back and tries to extend the toe, the load applied to the footrest portion inevitably increases and the load applied to the seat back 12 changes. Therefore, in such a case, it is determined that there is an intention to change the posture.

  FIG. 10C shows the case where two footrests 14 are provided for the left foot and the right foot, and the posture is changed when a load exceeding a predetermined value is simultaneously applied to the left and right footrests 14. Judge that there is a will. That is, since it can be determined that the driver D1 desires to extend the lower limb that a large load is applied simultaneously on the left and right, in such a case, it is determined that there is an intention to change the posture.

  FIG. 11A shows a case where two sensors (left seat seat load sensor, right seat seat load sensor) are provided on the left and right sides of the seat seat surface 11 and are detected by both sensors. When the load balance changes, it is determined that there is an intention to change the posture. For example, when the driver D1 seated on the seat seat surface 11 moves the center of gravity to either the left or right, the load of one seat surface load sensor increases and the load of the other seat surface load sensor decreases. To do. In such a case, it is determined that the driver D1 is trying to move the body, and it is determined that there is an intention to change the posture.

  FIG. 11B shows a case where two sensors (front seat seat load sensor, rear seat seat load sensor) are provided before and after the seat seat surface 11 and are detected by both sensors. When the load balance changes, it is determined that there is an intention to change the posture.

  FIG. 11C shows a case where two sensors (upper seat back load sensor and lower seat back load sensor) are provided above and below the seat back 12, and the load detected by both sensors is shown. When the balance changes, it is determined that there is an intention to change the posture. Specifically, when the difference between the upper load and the lower load is a positive value, it is determined that there is an intention to change the posture.

  And in this embodiment, when it will be in any one of above-mentioned FIG. 10 (a)-(c) and FIG. 11 (a)-(c), there exists an intention of the attitude | position change by driver | operator D1. Judge. Further, it may be input by the operation input by the input unit 55 that the driver has an intention to change the posture directly. As a result, YES is determined in the process of step S13 in FIG. 3, and the process proceeds to step S14.

  In step S <b> 14, the movable control unit 52 unlocks the footrest moving mechanism 24. As a result, the footrest part 14 can change the inclination angle with the heel position as a fulcrum. Further, the footrest portion 14 can be slid in the front-rear direction. Furthermore, it becomes possible to raise and lower the footrest portion 14 in the vertical direction.

  In step S15, the movable control unit 52 unlocks the seat seat surface movable mechanism 28. As a result, the seat seat surface 11 can change the inclination angle. And in addition to the change of the footrest part 14, by changing the inclination angle of the seat seating surface 11, as shown in FIG. 4, the driver D1 can incline the footrest part 14 using the symbol Q1 as a fulcrum. Since the seat seating surface 11 can be inclined downward, the lower limbs and the toe portion of the foot can be extended. As a result, the whole body can be stretched and stretched. That is, as shown in FIG. 5, during the automatic driving, the driver D1 can stretch the lower limbs and the toes.

  Further, as shown in FIG. 6, the footrest portion 14 is slid upward as shown in FIG. 6 (b) from the position shown in FIG. 6 (a) and the seat seat surface 11 is inclined upward. Can bend and stretch knees.

  Further, as shown in FIG. 7, the footrest portion 14 is slid forward from the position shown in FIG. 7 (a) as shown in FIG. 7 (b), and the front side of the seat seat surface 11 divided forward and backward By moving the seat seat surface 11b downward, the knee can bend and stretch.

  Thereafter, when the automatic operation is finished in step S11 (NO in step S11), in step S16, the controller 50 determines whether the footrest movable mechanism 24 and the seat seat surface movable mechanism 28 are unlocked. Judge whether or not.

  If unlocked (YES in step S16), in step S17, the controller 50 locks the footrest movable mechanism 24 and the seat seat surface movable mechanism 28 and returns them to a state suitable for driving operation. . In this way, the driver D1 can immediately perform the driving operation while taking the driving posture of the vehicle.

[Description of Effects of First Embodiment]
Thus, in the driving posture adjusting apparatus according to the present embodiment, when the vehicle 100 is in automatic driving, the display unit 54 displays that it is currently in automatic driving and no operation by the driver D1 is required. . The driver D1 can recognize that the driving operation is unnecessary by viewing this display. If the driver D1 is tired from driving for a long time and wants to stretch and stretch his lower limbs, the driver D1 intends to change his posture, such as applying a load to the footrest 14 or operating the input 55. The operation indicating is performed. The posture change intention determination unit 51 determines that the driver D1 has an intention to change the posture, and unlocks the footrest movable mechanism 24 and the seat seat surface movable mechanism 28.

  Accordingly, as shown in FIG. 5, the driver D1 can stretch the lower body by stretching the lower limbs and toes, for example, when the muscles are stiff or swollen during prolonged driving. It is possible to exercise and to increase the degree of concentration in forward monitoring and driving operations.

  Moreover, since it is displayed on the display part 54 that operation by the driver | operator D1 is unnecessary, it can be made to recognize whether it is the situation which can change a posture with respect to the driver | operator D1. Accordingly, the driver D1 can make the posture changeable by performing an operation such as applying a load to the footrest portion 14 or operating the input portion 55.

  Further, the footrest moving mechanism 24 (movable portion) can change at least one of the inclination angle, the vertical position, and the front and rear position of the footrest section 14 provided near the floor 15 of the driver seat. In addition, the movable control unit 52 controls the footrest moving mechanism 24 to move at least one of the inclination angle, the vertical position, and the front / rear position of the footrest 14, so that it meets the request of the driver D1. The footrest portion 14 can be moved or tilted to a different position, and the driving posture can be adjusted with great flexibility.

  Furthermore, as shown in FIG. 4, the footrest moving mechanism 24 moves the footrest 14 so that the inclination angle changes in the vertical direction with the heel portion of the footrest 14 as a fulcrum. The person D1 can perform an exercise of extending the toes, and can easily stretch and stretch the toes when the toes are stiff during long-time driving or the like.

  Further, as shown in FIG. 6, the footrest moving mechanism 24 is moved so that the footrest 14 moves up and down, so that the driver D <b> 1 raises the tip of the foot and moves the knee flexing and stretching. When the lower limbs are stiff, such as when driving for a long time, the knee can be easily bent and stretched for stretching.

  Further, as shown in FIG. 7, the footrest moving mechanism 24 moves the footrest 14 so as to slide in the front-rear direction, so that the driver D1 moves the foot forward and extends the knee. When the lower limbs are stiff, such as when driving for a long time, the knees can be easily stretched and stretched.

  Further, the seat seat surface movable mechanism 28 (movable part) has a function of moving at least one of a part or the entire inclination angle of the seat seat surface 11 of the driver's seat and a parting operation of the seat seat surface 11. It has. Then, the movable control unit 52 controls the seat seat surface moving mechanism 28 to move at least one of a part or the entire inclination angle of the seat seat surface 11 and the dividing operation of the seat seat surface 11. Therefore, it is possible to set the position of the seat seat surface 11 according to the request of the driver D1, and to adjust the driving posture with high flexibility.

  Further, as shown in FIGS. 4 and 6, the seat seat surface movable mechanism 28 can change the inclination angle of the seat seat surface 11 upward or downward, so that the lower limbs are stiff during long-time driving or the like. You can stretch your lower limbs easily when you are.

  Further, as shown in FIG. 7, in the seat seat surface movable mechanism 28, the seat seat surface 11 is divided into two parts, a rear seat seat surface 11a and a front seat seat surface 11b (part of the seat seat surface is divided). In addition, since the front seat seat surface 11b moves upward or downward, it can be easily stretched when the lower limbs are stiff during long-time driving or the like.

  In the first embodiment described above, the example in which the display unit 54 is used as the information presentation unit that indicates that the vehicle is in automatic operation has been described. However, the present invention is not limited to this, and the lamp is turned on. It is also possible to inform (present) by sound or sound.

[Description of modification]
Next, a modification of the first embodiment will be described. In the first embodiment described above, as shown in FIG. 4, the footrest portion 14 is tilted with the reference sign Q <b> 1 being the heel portion as a fulcrum, and the seat seat surface 11 is tilted, so that the lower limb of the driver D <b> 1. And toe can be extended.

  In the modification, the footrest portion 14 is inclined with the toe portion of the footrest portion 14, that is, the reference sign Q2 shown in FIG. When the footrest moving mechanism 24 is unlocked, as shown in FIG. 8, the footrest 14 is moved from the state shown in FIG. 8 (a) to the state indicated by the symbol Q2 as shown in FIG. 8 (b). Rotate around the indicated fulcrum. Further, by tilting the front seat seat surface 11b with respect to the rear seat seat surface 11a among the seat seat surfaces 11 divided into the front and the rear, the knee flexion and extension movement and the calf muscle stretch can be performed. become.

  Accordingly, similarly to the first embodiment described above, the footrest movable mechanism 24 and the seat seat surface movable mechanism 28 can be unlocked by a simple method so that the legs and toes can be extended.

  Further, as shown in FIG. 8, the footrest moving mechanism 24 moves the footrest 14 so that the inclination angle changes in the vertical direction with the toe portion of the footrest 14 as a fulcrum. The person D1 can perform the exercise of sticking out the heel and can refresh the lower limbs when driving for a long time.

  Further, as shown in FIG. 8, the seat seat surface movable mechanism 28 has a seat seat surface 11 divided into two parts, a rear seat seat surface 11a and a front seat seat surface 11b, and an inclination angle of the front seat seat surface 11b. Since (the inclination angle of a part of the seat seat surface) can be changed upward or downward, it can be easily stretched when the lower limbs are stiff during long-time driving or the like.

  As mentioned above, although the driving posture adjusting apparatus of the present invention has been described based on the illustrated embodiment, the present invention is not limited to this, and the configuration of each part is replaced with an arbitrary configuration having the same function. be able to.

DESCRIPTION OF SYMBOLS 10 Seat 11 Seat seat surface 11a Rear seat seat surface 11b Front seat seat surface 12 Seat back 15 Floor surface 20 Steering 24 Footrest part movable mechanism 25 Load sensor 26 Seat seat surface load sensor 27 Seat back load sensor 28 Seat seat surface movable Mechanism 50 Controller 51 Attitude change intention determination unit 52 Movable control unit 53 Information presentation control unit 54 Display unit 55 Input unit 100 Autonomous driving vehicle D1 Driver

Claims (10)

A driving posture adjusting device that is mounted on a vehicle capable of automatic driving to perform steering operation and pedal operation and adjusts the posture of the driver,
An information presenting unit for presenting the driver with the fact that the vehicle is in an automatic driving mode when the automatic driving is performed;
A posture change intention determination unit for detecting the intention of the posture change by the driver;
A movable part that changes the posture of the driver;
When the driver's intention to change the posture is detected during the automatic driving, the movable part is unlocked, and the driver is not in the automatic driving or the driver's intention to change the posture is not detected. In some cases, a movable control unit that controls the movable unit not to be unlocked ;
A driving posture adjusting device comprising:


The movable part is a footrest part movable mechanism capable of changing at least one of an inclination angle, a vertical position, and a front and rear position of a footrest part provided in a driver's seat,
The driving according to claim 1, wherein the movable control unit controls the footrest moving mechanism to move at least one of an inclination angle, a front-rear position, and a vertical position of the footrest. Attitude adjustment device.   3. The driving posture according to claim 2, wherein the footrest moving mechanism moves the footrest so that an inclination angle changes in a vertical direction with a toe portion of the footrest as a fulcrum. Adjustment device.   3. The driving posture according to claim 2, wherein the footrest moving mechanism moves the footrest so that an inclination angle changes in the vertical direction with a heel portion of the footrest as a fulcrum. Adjustment device.   The driving posture adjusting device according to any one of claims 2 to 4, wherein the footrest moving mechanism moves the footrest so as to move up and down.   The driving posture adjusting device according to any one of claims 2 to 4, wherein the footrest moving mechanism moves the footrest so as to slide in the front-rear direction. The movable part further includes a seat seat surface movable mechanism that moves at least one of a part or the whole inclination angle of the seat seat surface of the driver's seat and a division operation of a part of the seat seat surface,
The movable control unit controls the seat seat surface movable mechanism to move at least one of a part or the whole inclination angle of the seat seat surface and a dividing operation of the seat seat surface. The driving posture adjusting apparatus according to any one of claims 2 to 6.   The driving posture adjusting apparatus according to claim 7, wherein the seat seat surface moving mechanism moves the seat seat surface so that a tilt angle of a part of the seat seat surface changes.   The driving posture adjusting device according to claim 7, wherein the seat seat surface moving mechanism moves the seat seat surface so that an overall inclination angle of the seat seat surface changes.   The operation according to any one of claims 7 to 9, wherein the seat seat surface movable mechanism moves the seat seat surface so as to divide and move a part of the seat seat surface. Attitude adjustment device.

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