JP2018016135A - Vehicle seat control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat control device capable of improving convenience while suppressing occupants of rear seats from feeling cramped.SOLUTION: A front ECU 15f and a rear ECU 15r serving as a seating detection unit, a control unit, and a limitation unit limit the rear motion of a seat cushion 2f and the rear motion of a seat back 3f through front automatic operation, the front motion of the seat cushion 2r through rear automatic operation, and the upper motion and the extension motion of an ottoman 5r smaller when an occupant is seated on a rear seat 1r than those when the occupant is not seated on the rear seat 1r, on the basis of a small space map and a large space map.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle seat control device.

2. Description of the Related Art Conventionally, there is a vehicle seat control device that controls an operation position of a seat element, such as a seat cushion or a seat back, that can be adjusted in position by a driving force from a driving source.
For example, Patent Document 1 includes a map that defines a sliding range in which a seat cushion (seat) can be slid and a reclining range in which a seat back can be reclined, and the seat is set according to a threshold set in the map. A control device for controlling the sliding operation of the cushion and the reclining operation of the seat back is disclosed. Specifically, for example, when the seat cushion is on the front side of the vehicle in the sliding range, the threshold value is set so that the reclining range is larger than when the seat cushion is on the rear side of the vehicle. While avoiding, the operating range of each seat element is enlarged to improve the convenience.

  Further, for example, in Patent Document 2, when there is an operation input to an operation switch, the operation position of each sheet element is detected, and each sheet element is set to a predetermined sheet position stored (held) in a memory. A control device that performs an automatic operation for automatically controlling the operation position is disclosed.

Japanese Patent No. 4192593 JP 2011-68180 A

  By the way, in the structure of the above-mentioned Patent Document 1, when the threshold value of the map is set on the assumption that no occupant is seated on the rear seat, the front seat is set to the seat position in the vehicle rearward direction by, for example, auto operation. When the vehicle moves, the front seat automatically moves, so it is easy to give a tight feeling to the occupant seated on the rear seat. On the other hand, if the map threshold is set assuming that the occupant is seated on the rear seat, the occupant seated on the rear seat can be restrained from feeling cramped, but in practice, Even when an occupant is not seated on the rear seat, the operating range of each seat element of the front seat is reduced, so the convenience of the occupant of the front seat is reduced.

  The objective of this invention is providing the vehicle seat control apparatus which can improve the convenience, suppressing that the passenger | crew of a rear seat becomes cramped.

  A vehicle seat control apparatus that solves the above-described problem is a seat detection unit that detects seating of an occupant on a rear seat arranged side by side in the rear direction of a front seat on the front side of the vehicle, and a position based on a driving force from a driving source. An operation position detection unit that detects an operation position of each seat element of the front seat and the rear seat that can be adjusted; a storage unit that stores a predetermined front seat position of the front seat and a predetermined rear seat position of the rear seat; Front auto operation that automatically moves the front seat to the predetermined front seat position when the front auto operation start condition is satisfied, and rear auto operation that automatically moves the rear seat to the predetermined rear seat position when the predetermined rear auto operation start condition is satisfied An occupant to the rear seat by the control unit for performing the operation and the seating detection unit When seating is detected, based on the detection result of the operation position detector, the position of the seat element of the front seat in the vehicle rear direction by the front auto operation and the vehicle of the seat element of the rear seat by the rear auto operation A restriction unit that restricts at least one of the front position adjustments to be smaller than a case in which seating of an occupant on the rear seat is not detected.

  According to the above configuration, when an occupant is seated on the rear seat, the position adjustment of the seat element of the front seat in the vehicle rear direction by the front auto operation and the position adjustment of the seat element of the rear seat in the vehicle front direction by the rear auto operation are performed. At least one is limited to be smaller than when no occupant is seated on the rear seat. For this reason, when at least one of the front seat and the rear seat performs an automatic operation in a state where the occupant is seated on the rear seat, a large space is secured between the front seat and the rear seat. Giving can be suppressed. On the other hand, when the occupant is not seated in the rear seat, the position adjustment of the seat element of the front seat by the front auto operation is not limited as compared with the case where the occupant is seated in the rear seat. Convenience can be improved.

  In the vehicle seat control device, the control unit performs a front manual operation of adjusting an operation position of a seat element of the front seat according to an operation input to the front operation unit, and the limiting unit includes: Even when the seating detection unit detects the seating of an occupant on the rear seat, the position adjustment of the seat element of the front seat in the vehicle rear direction by the front manual operation is not detected. It is preferable not to limit it to be smaller than the case.

  According to the above configuration, even when the occupant is seated on the rear seat, when the position of the seat element of the front seat is adjusted by the front manual operation by the occupant's will, the same as when the occupant is not seated on the rear seat Further, since the position adjustment in the vehicle rearward direction is not limited, the convenience of the front seat passenger can be further enhanced.

  In the vehicle seat control device, the control unit performs a rear manual operation of adjusting an operation position of a seat element of the rear seat according to an operation input to the rear operation unit, and the limiting unit includes Even when seating of the occupant on the rear seat is detected by the seating detection unit, the position adjustment of the seat element of the rear seat in the vehicle front direction by the rear manual operation is performed when the seating of the occupant on the rear seat is not detected. It is preferable that the limit is not small.

  According to the above configuration, when adjusting the position of the seat element of the rear seat by the rear manual operation by the will of the occupant seated on the rear seat, the position adjustment in the front direction of the vehicle is not restricted, so the convenience of the occupant of the rear seat is improved. Can be increased.

  In the vehicle seat control device, the seat element of the front seat adjusts a reclining position by a seat cushion capable of adjusting a sliding position by a sliding operation including a displacement in a vehicle longitudinal direction and a reclining operation including a displacement in a vehicle longitudinal direction. The seat element of the rear seat includes a seat back that can be adjusted, and a seat cushion that can adjust a slide position by a slide operation including a displacement in the vehicle longitudinal direction, and a tilt expansion / contraction position that is adjusted by a tilt expansion / contraction operation including a displacement in the vehicle longitudinal direction. It is preferable to include possible ottomans.

  According to the above configuration, the front seat slide position, the seat back reclining position, the rear seat slide position, and the ottoman tilting expansion / contraction position are limited by the presence or absence of the occupant sitting on the rear seat during auto operation. Giving a tight feeling to the occupant can be suitably suppressed.

  In the vehicle seat control device, the storage unit is configured to determine an operation range in which the position of the seat element of the front seat can be adjusted and an operation range in which the position of the seat element of the rear seat can be adjusted, between the front seat and the rear seat. A small space map that is set so that a space between the front seat and the rear seat is reduced, an operation range in which the seat element of the front seat can be adjusted, and an operation range in which the seat element of the rear seat can be adjusted. And a large space map set so that the space between and the small space map is larger than the small space map, and when the seating detection unit does not detect the seating of the occupant on the rear seat, Based on the small space map, position adjustment of the seat element of the front seat in the vehicle rear direction by the front auto operation And restricting at least one of the position adjustment of the seat element of the rear seat in the vehicle forward direction by the rear auto operation, and when the seating detection unit detects the seating of the occupant on the rear seat, it is based on the large space map. Preferably, at least one of position adjustment of the seat element of the front seat in the vehicle rearward direction by the front auto operation and position adjustment of the seat element of the rear seat in the vehicle front direction by the rear auto operation is limited.

  According to the above configuration, based on the small space map and the large space map, the position adjustment of the seat element of the front seat in the vehicle rear direction by the front auto operation and the position adjustment of the seat element of the rear seat in the vehicle front direction by the rear auto operation are performed. Since at least one of these is limited to a small size, the calculation load at the limiting unit can be reduced.

  ADVANTAGE OF THE INVENTION According to this invention, the convenience can be improved, suppressing that the passenger | crew of a rear seat becomes cramped.

The schematic block diagram of the vehicle seat control apparatus. (A) is a schematic diagram which shows a small space map, (b) is a schematic diagram which shows a large space map. The flowchart which shows the process sequence of operation | movement range restriction | limiting control by rear ECU. The flowchart which shows the process sequence of operation | movement range restriction | limiting control by rear ECU. The flowchart which shows the process sequence of the operation range restriction | limiting control by front ECU.

Hereinafter, an embodiment of a vehicle seat control device will be described with reference to the drawings.
A front seat 1f of the present embodiment shown in FIG. 1 is used for a front seat of a vehicle. The front seat 1f includes a seat cushion 2f, a seat back 3f provided to be tiltable with respect to a rear end portion of the seat cushion 2f, and a headrest 4f provided at an upper end of the seat back 3f. Two lower rails 6f extending in the vehicle front-rear direction are provided in parallel on the floor portion Fl of the vehicle. Each of the lower rails 6f is provided with an upper rail 7f that can be relatively moved in the vehicle longitudinal direction on the lower rail 6f. The seat cushion 2f is supported on each upper rail 7f, and can be moved relative to the lower rail 6f in the vehicle front-rear direction (sliding operation) integrally with the upper rail 7f.

  Further, the rear seat 1r of the present embodiment is used for a rear seat arranged side by side in the rear direction of the front seat 1f. The rear seat 1r includes a seat cushion 2r, a seat back 3r provided to be tiltable with respect to a rear end portion of the seat cushion 2r, and a headrest 4r provided at an upper end of the seat back 3r. Further, the rear seat 1r includes an ottoman 5r that is provided so as to be tiltable with respect to the front end portion of the seat cushion 2r and is configured to be extendable. Similarly to the front seat 1f, two lower rails 6r extending in the vehicle front-rear direction are provided in parallel on the vehicle floor Fl, and an upper rail 7r is attached to the lower rail 6r. The seat cushion 2r is connected to the upper rail 7r. It is integrally movable (sliding operation) on the lower rail 6r in the vehicle front-rear direction.

  The front seat 1f is provided with a seat slide actuator 11f and a seat reclining actuator 12f. The front seat 1f is configured as a power seat that can adjust the operating position of each seat element SE by each actuator 11f, 12f. .

  Specifically, the seat slide actuator 11f has a motor M1f as a drive source, and slides a seat cushion 2f (the entire front seat 1f) as a seat element in the front-rear direction of the vehicle (left-right direction in FIG. 1). Let Thereby, the front seat 1f can adjust the slide position in the front-rear direction of the vehicle.

  The seat reclining actuator 12f has a motor M2f as a driving source, and the reclining operation is performed so that the position of the upper end portion of the seat back 3f moves in the front-rear direction of the vehicle. (In FIG. 1, tilting in the left-right direction). Thereby, the reclining position of the seat back 3f can be adjusted for the front seat 1f.

  The rear seat 1r is provided with a seat slide actuator 11r, a seat reclining actuator 12r, and an ottoman actuator 13r. The rear seat 1r is a power seat that can adjust the operating position of each seat element SE by each actuator 11r to 13r. It is configured.

  Specifically, the seat slide actuator 11r has a motor M1r as a driving source, and slides the seat cushion 2r (the entire rear seat 1r) as a seat element in the front-rear direction of the vehicle (left-right direction in FIG. 1). . Thereby, the rear seat 1r can adjust the slide position in the front-rear direction of the vehicle.

  The seat reclining actuator 12r has a motor M2r as a drive source, and the reclining operation is performed so that the position of the upper end portion of the seat back 3r moves in the front-rear direction of the vehicle. (In FIG. 1, tilting in the left-right direction). Thereby, the rear seat 1r can adjust the reclining position of the seat back 3r.

  The ottoman actuator 13r has a motor M3r as a drive source, and tilts the ottoman 5r as a seat element so that the position of its lower end portion moves in the front-rear direction of the vehicle (in FIG. Tilt) and extend and contract in a direction crossing the tilt direction. Thereby, the rear seat 1r can adjust the tilting position and the expansion / contraction position (tilting expansion / contraction position) of the ottoman 5r.

Next, the electrical configuration of the vehicle seat control device of the present embodiment will be described.
The front seat 1f is provided with a front ECU 15f that controls the operation of the actuators 11f and 12f. The front ECU 15f is connected to the motors M1f and M2f, respectively, and through the supply of driving power to the motors M1f and M2f, the operation of the actuators 11f and 12f, that is, the seat elements SE (the seat cushion 2f and the seat back 3f). Control the operating position. The front ECU 15f moves the seat position of the front seat 1f through control of the operation position of each seat element SE.

  Specifically, each of the motors M1f and M2f is provided with rotation sensors S1f and S2f that output a pulse signal synchronized with the rotation. That is, the pulse signals Sp1f and Sp2f output from the rotation sensors S1f and S2f are synchronized with the operations of the sheet elements SE driven by the actuators 11f and 12f. The front ECU 15f detects the operating position of each seat element SE by counting (integrating) the pulse changes of the pulse signals Sp1f and Sp2f based on the preset initial values. That is, the operation position detector is configured by the front ECU 15f and the pulse signals Sp1f and Sp2f.

  The front ECU 15f is connected to a plurality of front operation switches 21f for adjusting the operation position of each seat element SE by an occupant's operation. The front operation switch 21f corresponds to the front operation unit, and is provided, for example, on the side of the front seat 1f.

  The rear seat 1r is provided with a rear ECU 15r that controls the operation of the actuators 11r to 13r. The rear ECU 15r is connected to each of the motors M1r to M3r, and operates the actuators 11r to 13r through the supply of driving power to the motors M1r to M3r, that is, the seat elements SE (seat cushion 2r, seat back 3r, ottoman). 5r) is controlled. Then, the rear ECU 15r moves the seat position of the rear seat 1r through control of the operation position of each seat element SE.

  Specifically, each of the motors M1r to M3r is provided with rotation sensors S1r to S3r for outputting a pulse signal synchronized with the rotation, similarly to the motors M1f and M2f. Then, similarly to the front ECU 15f, the rear ECU 15r detects the operating position of each seat element SE by counting the pulse changes of the pulse signals Sp1r to Sp3r based on preset initial values. That is, the operation position detector is configured by the rear ECU 15r and the pulse signals Sp1r to Sp3r.

  The rear ECU 15r is connected to a seating sensor 22 that forms a pressure sensitive part on the seating surface 2ra of the seat cushion 2r of the rear seat 1r. Note that the seating sensor 22 of the present embodiment uses a membrane switch that switches on and off when the seating surface 2ra is pressed, and outputs a seating signal S_si that switches on and off depending on whether or not the rear seat 1r is seated. The rear ECU 15r is connected to a plurality of rear operation switches 21r for adjusting the operation position of each seat element SE by an occupant's operation. The rear operation switch 21r corresponds to the rear operation unit, and is provided, for example, on the side portion of the rear seat 1r. Further, the rear ECU 15r is connected to the front ECU 15f via the in-vehicle network 23.

  In addition to the operation input signal S_swf corresponding to the operation input to the front operation switch 21f, the front ECU 15f receives, for example, the vehicle start state (for example, the operation position of the ignition key and the start switch on / off) via the in-vehicle network 23. Various signals such as an ignition signal S_ig indicating the signal and a signal from the rear ECU 15r are input. Then, the front ECU 15f moves the front seat 1f by controlling the operation position of each seat element SE of the front seat 1f based on various input signals.

  In addition to the operation input signal S_swr corresponding to the operation input to the rear operation switch 21r and the seating signal S_si corresponding to the seating of the occupant from the seating sensor 22, the rear ECU 15r receives, for example, an ignition signal S_ig, Various signals such as a signal from the front ECU 15f are input. Then, the rear ECU 15r controls the operation position of each seat element SE of the rear seat 1r based on various signals that are input, and moves the rear seat 1r. The rear ECU 15r detects the seating of the passenger on the rear seat 1r based on the seating signal S_si. That is, in the present embodiment, the seating detection unit is configured by the rear ECU 15r and the seating signal S_si.

(Manual operation and auto operation)
When there is an input to the front operation switch 21f by an occupant or the like, the front ECU 15f adjusts the position of the seat element SE of the front seat 1f according to the input, that is, performs a front manual operation. Further, a plurality of predetermined front seat positions of the front seat 1f are stored (held) in the memory 31f as a storage unit of the front ECU 15f. The front ECU 15f controls the actuators 11f and 12f when a predetermined front auto operation start condition predetermined for each predetermined front seat position is satisfied, and the operation position of each seat element SE is set to the predetermined front seat. The position is automatically adjusted to be the operation position corresponding to the position. That is, the front ECU 15f performs a front auto operation for moving the front seat 1f to the predetermined front seat position.

  When there is an input to the rear operation switch 21r by an occupant or the like, the rear ECU 15r adjusts the position of the seat element SE of the rear seat 1r according to the input, that is, performs a rear manual operation. A plurality of predetermined rear seat positions of the rear seat 1r are stored in the memory 31r as a storage unit of the rear ECU 15r. The rear ECU 15r controls the actuators 11r to 13r when a predetermined rear auto operation start condition predetermined for each predetermined rear seat position is satisfied, and the operation position of each seat element SE corresponds to the predetermined rear seat position. The position is automatically adjusted so that it becomes the operating position. That is, the rear ECU 15r performs a rear auto operation for moving the rear seat 1r to the predetermined rear seat position.

  Note that the predetermined front seat position and the predetermined rear seat position include, for example, a getting-off position set in advance as a position at which an occupant easily gets out of the vehicle, a registered seat position registered according to the occupant's preference, and the like. Further, as the predetermined front auto operation start condition and the predetermined rear auto operation start condition, for example, there is an operation input to the front operation switch 21f for performing the front auto operation or the rear operation switch 21r for performing the rear auto operation. And the ignition signal S_ig indicates an off state and the door is opened. The front ECU 15f and the rear ECU 15r constitute a control unit that performs a front auto operation and a rear auto operation.

(Operating range restriction control)
Here, a small space map and a large space map are stored in the memory 31r of the rear ECU 15r. Then, the rear ECU 15r suppresses the feeling of being cramped to the occupant of the rear seat 1r, and improves the convenience of each occupant of the front seat 1f and the rear seat 1r based on each map, during the front auto operation. The position adjustment of the seat element SE of the 1f and the seat element of the rear seat 1r during the rear auto operation is limited. That is, the rear ECU 15r functions as a limiting unit. Note that the position adjustment is limited to the operation stop of the seat element SE that is about to enter the operation limit range of the map and the operation limit range of the sheet element SE stopped at the boundary position with the map operation limit range. Including not permitting the start of operation.

  Specifically, as shown in FIGS. 2A and 2B, the small space map and the large space map are respectively in the vehicle longitudinal direction between the reclining position of the seat back 3f of the front seat 1f and the front seat 1f and the rear seat 1r. It is set based on relative distance. The reclining position on the vertical axis indicates that the seat back 3f is tilted toward the rear of the vehicle as it goes upward in the figure, and the relative distance on the horizontal axis is the front seat 1f and the rear seat as it goes to the right side in the figure. It shows that the relative distance in the vehicle front-rear direction with 1r is short. Note that the vehicle front-rear direction position of the rear seat 1r of the present embodiment is calculated based on the slide position of the seat cushion 2r and the tilting expansion / contraction position of the ottoman 5r, and the rear ECU 15r has the tilting position of the ottoman 5r in the vehicle upward direction. It is determined that the rear seat 1r is positioned in the forward direction of the vehicle as it is positioned and as the ottoman 5r extends.

  In the small space map, the operation range in which the position of the seat element SE of the front seat 1f can be adjusted and the range in which the position of the seat element SE of the rear seat 1r can be adjusted increase the space between the front seat 1f and the rear seat 1r. It is set to be smaller than the space map. In other words, the range in which the reclining operation of the seat back 3f can be performed so that the space between the front seat 1f and the rear seat 1r is smaller than the large space map, the relative distance at which the front seat 1f and the rear seat 1r can be closest to each other. , And a range in which the ottoman 5r can be tilted and expanded.

  Specifically, as shown in FIG. 2A, in the range where the relative distance between the front seat 1f and the rear seat 1r is relatively long, the seat back 3f has a range in the vehicle rearward direction from the first reclining position P1. The operation limit range is set such that the range on the vehicle front direction side of the same position P1 is the reclining operation permission range. Further, in a range where the relative distance between the front seat 1f and the rear seat 1r is relatively short, the reclining operation permission range of the seat back 3f is set to gradually decrease toward the vehicle front side as the relative distance approaches. . In other words, in the range where the reclining position of the seat back 3f is tilted backward in the vehicle, the closest distance between the front seat 1f and the rear seat 1r gradually increases as the seat back 3f tilts backward in the vehicle. Is set to In the range in which the reclining position of the seat back 3f is standing in the front direction of the vehicle, the closest relative distance between the front seat 1f and the rear seat 1r is the range closer to the first relative distance L1 than the first relative distance L1. The range equal to or greater than the same distance L1 is set to be the operation permission range. That is, in the small space map, there is a range in which the reclining position of the seat back 3f and the relative distance between the front seat 1f and the rear seat 1r are on the inner side of the boundary line B1 (the front side of the reclining position or the proximity side of the relative distance). This is the operation permission range of the sheet element SE. Further, the range that is outside the boundary line B1 (the vehicle reclining position side of the reclining position or the relative distance proximity side) is the operation restriction range of the seat element SE.

  In the small space map, an auxiliary boundary line SB1 that is substantially parallel (similar) to the boundary line B1 is set inside the boundary line B1. In the state where the reclining position of the seat back 3f and the relative distance between the front seat 1f and the rear seat 1r are inside the auxiliary boundary line SB1, the tilting expansion / contraction operation of the ottoman 5r is the maximum possible in the mechanism of the ottoman 5r. Allowed in range. That is, the inside of the auxiliary boundary line SB1 is the maximum operation permission range of the ottoman 5r. On the other hand, when the reclining position of the seat back 3f and the relative distance between the front seat 1f and the rear seat 1r are inside the boundary line B1 and outside the auxiliary boundary line SB1, the tilting expansion / contraction operation of the ottoman 5r is smaller than the maximum range. Only allowed in range. That is, the inner side of the boundary line B1 and the outer side of the auxiliary boundary line SB1 are the partial operation permission range of the ottoman 5r. As the partial operation permission range, for example, the tilting range of the ottoman 5r can be set to 50% of the maximum possible range for the mechanism, and the expansion / contraction range can be set to 50% of the maximum possible range for the mechanism. The ratio can be changed as appropriate. Further, when the reclining position of the seat back 3f and the relative distance between the front seat 1f and the rear seat 1r are outside the boundary line B1, the tilting / extending operation of the ottoman 5r is restricted, and the tilting / extending position of the ottoman 5r is the most. The vehicle is in the downward direction and the most contracted state (stored state). That is, the outside of the boundary line B1 is the operation restriction range of the ottoman 5r.

  As shown in FIG. 2B, the large space map has the same tendency as the small space map, and the operation range in which the position of the seat element SE of the front seat 1f can be adjusted and the position of the seat element SE of the rear seat 1r. The adjustable range is set so that the space between the front seat 1f and the rear seat 1r is smaller than the large space map.

  Specifically, in a range where the relative distance between the front seat 1f and the rear seat 1r is relatively long, the seat back 3f is a range in the vehicle rearward direction relative to the second reclining position P2 located on the vehicle frontward side from the first reclining position P1. Is set to be an operation restriction range, and a range on the vehicle front direction side of the same position P2 is a reclining operation permission range. Further, in a range where the relative distance between the front seat 1f and the rear seat 1r is relatively short, the reclining operation permission range of the seat back 3f is set to gradually decrease toward the vehicle front side as the relative distance approaches. . In the range where the reclining position of the seat back 3f is standing in the front direction of the vehicle, the relative distance at which the front seat 1f and the rear seat 1r are closest to each other is the second relative distance located on the far side from the first relative distance L1. A range closer to L2 is set as an operation limit range, and a range equal to or greater than the distance L2 is set as an operation permission range. Further, in the large space map, an auxiliary boundary line SB2 that is substantially parallel to the boundary line B2 is set inside the boundary line B2, and the maximum operation permission range and partial operation permission range of the ottoman 5r are set as in the small space map. And an operation restriction range are set.

  As shown in FIG. 1, the front ECU 15f detects the slide position of the seat cushion 2f and the reclining position of the seat back 3f on the basis of the pulse signals Sp1f and Sp2f at predetermined sampling cycles, and indicates the operation positions thereof. The position signal S_sp is output. Note that the front ECU 15f of this embodiment is not a strict operating position of the sliding position of the seat cushion 2f and the reclining position of the seat back 3f, but slides into any of the ranges obtained by dividing the sliding range and the reclining range into a plurality of ranges, respectively. A rough operation position indicating whether the position and the reclining position are located is output.

  The rear ECU 15r detects the sliding position of the seat cushion 2r, the reclining position of the seat back 3r, and the tilting expansion / contraction position of the ottoman 5r for each predetermined sampling period based on the pulse signals Sp1r to Sp3r. Subsequently, the relative distance between the front seat 1f and the rear seat 1r is calculated based on the detected operation position of each seat element SE and the operation position signal S_sp from the front ECU 15f. Further, the relative distance and the reclining position of the seat back 3f are applied to the small space map and the large space map, respectively, and it is determined whether or not to restrict the movement of the front seat 1f and the rear seat 1r.

  When the rear ECU 15r needs to restrict the sliding operation of the seat cushion 2r or the tilting extension / contraction operation of the ottoman 5r on the small space map, the rear ECU 15r does not matter whether the rear manual operation or the rear auto operation is performed. The position adjustment of the sheet element SE is limited. At this time, the rear ECU 15r also outputs a first restriction signal S_li1 instructing that it is necessary to restrict the sliding operation of the seat cushion 2f or the reclining operation of the seat back 3f on the small space map.

  On the other hand, when the rear ECU 15r needs to restrict the sliding operation of the seat cushion 2r or the tilting expansion / contraction operation of the ottoman 5r on the large space map, the rear ECU 15r is seated on the rear seat 1r, and the rear auto operation is performed. The position adjustment of the sheet element SE is limited. At this time, the rear ECU 15r also outputs a second restriction signal S_li2 instructing that it is necessary to restrict the sliding operation of the seat cushion 2f or the reclining operation of the seat back 3f on the large space map. However, even if it is necessary to restrict the sliding motion of the seat cushion 2r or the tilting expansion / contraction motion of the ottoman 5r on the large space map, if the seat is not seated on the rear seat 1r or the rear manual operation is being performed, the seat The position adjustment of the element SE is not limited. The rear ECU 15r adjusts the position of the seat cushion 2r in the vehicle rear direction (rear operation), adjusts the position of the seat back 3r in the vehicle front and rear direction (front and rear operation), and adjusts the position of the ottoman 5r in the vehicle lower direction (lower operation). The position adjustment in the contraction direction (contraction operation) is not limited.

  As an example, as shown in FIGS. 2 (a) and 2 (b), when the position of the seat cushion 2r (rear seat 1r) is adjusted (front operation) from the state in which the front seat 1f and the rear seat 1r are at the point X1, think of. When the seat cushion 2r is pre-actuated and reaches a point X2 in the middle (when entering the ottoman partial operation permission range on the large space map), if it is a rear manual operation, the rear ECU 15r activates the seat cushion 2r. Continue as is. On the other hand, if the occupant is seated on the rear seat 1r and the rear automatic operation is performed, the tilting position of the ottoman 5r is moved downward so that the tilting expansion / contraction position of the ottoman 5r is within the partial operation permission range, and the expansion / contraction position is contracted. Operate.

  Thereafter, when the front seat 1f and the rear seat 1r are in the state of the point X3, the rear ECU 15r continues the front operation of the seat cushion 2r if it is a rear manual operation. On the other hand, if the occupant is seated on the rear seat 1r and the rear auto operation is performed, the lower operation and the contraction operation are performed and the front operation of the seat cushion 2r is stopped until the tilting expansion / contraction position of the ottoman 5r is in the retracted state. At this time, the rear ECU 15r outputs the second limit signal S_li2.

  Further, when the front seat 1f and the rear seat 1r are in the state of the point X4, the rear ECU 15r operates downward so that the tilting expansion / contraction position of the ottoman 5r is within the partial operation permission range even in the rear manual operation. And contraction. Then, when the front seat 1f and the rear seat 1r are in the state of the point X5, the rear ECU 15r operates downward and contracts until the tilting expansion / contraction position of the ottoman 5r is in the retracted state even in the rear manual operation. The front operation of the cushion 2r is stopped. At this time, the rear ECU 15r outputs a first limit signal S_li1.

  When the first limit signal S_li1 is input from the rear ECU 15r via the in-vehicle network 23, the front ECU 15f receives the first limit signal regardless of whether the front manual operation or the front auto operation is performed. The position adjustment of the sheet element SE indicated by S_li1 is limited. Further, when the second restriction signal S_li2 is input from the rear ECU 15r via the in-vehicle network 23, the front ECU 15f continues the manual operation and adjusts the position of the seat element when the front manual operation is being executed. . On the other hand, if the front auto operation is being executed, the position adjustment of the sheet element SE instructed by the second restriction signal S_li2 is restricted. The front ECU 15f does not restrict the front operation of the seat cushion 2f and the front operation of the seat back 3f.

  As an example, as shown in FIGS. 2A and 2B, consider a case where the seat back 3f is operated after the front seat 1f and the rear seat 1r are at the point Y1. When the front seat 1f and the rear seat 1r are in the middle of the point Y2, if there is a seat on the rear seat 1r, the rear ECU 15r outputs the second restriction signal S_li2. At this time, if the position adjustment is a front manual operation, the front ECU 15f continues the rear operation of the seat back 3f according to the operation input to the front operation switch 21f even if the second restriction signal S_li2 is input. On the other hand, if the position adjustment is the front auto operation, the rear operation of the seat back 3f is stopped when the second limit signal S_li2 is input. Thereafter, when the front seat 1f and the rear seat 1r are at the point Y3, the first restriction signal S_li1 is output from the rear ECU 15r. At this time, the front ECU 15f stops the rear operation of the seat back 3f even if the position adjustment is a front manual operation.

Next, the processing procedure of the operation range restriction control by the rear ECU 15r will be described.
As shown in FIG. 3, when the rear ECU 15r acquires various signals from the various sensors and the in-vehicle network 23 (step 101), the front seat 1f and the rear seat are based on the operating positions of the seat elements SE of the front seat 1f and the rear seat 1r. The relative distance between 1r is calculated (step 102). Subsequently, it is determined whether or not the front seat 1f and the rear seat 1r are within the permitted operation range (inside the boundary line B2) on the large space map (step 103). 103: NO), it is determined whether or not an occupant is seated on the rear seat 1r (step 104). When a passenger is seated on the rear seat 1r (step 104: YES), the second restriction signal S_li2 is output (step 105), and the front seat 1f and the rear seat 1r are within the permitted operation range on the small space map. It is determined whether it is within (inside the boundary line B1) (step 106). In addition, when it exists in the operation | movement permission range on a large space map (step 103: YES), and when the passenger | crew has not seated on the rear seat 1r (step 104: NO), it does not transfer to step 105, but step 106. Subsequently, when the front seat 1f and the rear seat 1r are not within the operation permission range on the small space map (step 106: NO), the first limit signal S_li1 is output (step 107). After outputting the first limit signal S_li1 or when it is within the operation permission range on the small space map (step 106: YES), it is determined whether or not the rear auto 1r is being operated at that time (step 106: YES). Step 108).

  Subsequently, when the rear ECU 15r is performing the rear auto operation (step 108: YES), there is no output of the limit signal (at least one of the first limit signal S_li1 and the second limit signal S_li2) in the current calculation cycle. Whether or not (step 109). If there is no limit signal output (step 109: YES), the pre-operation of the seat cushion 2r is permitted (step 110). Subsequently, whether or not the tilt extension / contraction position of the ottoman 5r is within the permitted operation range on the large space map, that is, whether the front seat 1f and the rear seat 1r are within the maximum permitted operation range on the large space map, If it is within the operation permission range, it is determined whether or not the tilting expansion / contraction position exceeds the partial operation permission range (step 111). When the tilting expansion / contraction position of the ottoman 5r is within the permitted operation range on the large space map (step 111: YES), the position adjustment (upward operation) of the ottoman 5r in the vehicle upward direction and the position adjustment in the extension direction ( The extension operation is permitted (step 112), and the rear auto operation is continued (step 113).

  On the other hand, when the tilting expansion / contraction position of the ottoman 5r is not within the permitted operation range on the large space map (step 111: NO), the rear ECU 15r adjusts the position of the tilting expansion / contraction position of the ottoman 5r within the permitted operation range (step 111). Step 114). That is, when the front seat 1f and the rear seat 1r are in the motion restriction range on the large space map, the ottoman 5r is set in the retracted state, and in the partial motion permission range, the ottoman is allowed to the tilting expansion / contraction position permitted in the partial motion permission range. Adjust the position of 5r. Subsequently, the upper operation and the extension operation of the ottoman 5r are limited (step 115), and the process proceeds to step 113 to continue the rear auto operation.

  Further, when there is a limit signal output (step 109: NO), the rear ECU 15r limits the front operation of the seat cushion 2r (step 116), and limits the upper operation and extension operation of the ottoman 5r. (Step 117), the process proceeds to Step 113 and the rear auto operation is continued.

  As shown in FIG. 4, when the rear auto operation is not performed (step 108: NO), the rear ECU 15r determines whether the rear manual operation is performed (step 118). When the rear manual operation is being performed (step 118: YES), it is determined whether or not the first limit signal S_li1 is output in the current calculation cycle (step 119), and the first limit signal S_li1 is not output. In this case (step 119: NO), the front operation of the seat cushion 2r is permitted (step 120). Subsequently, it is determined whether or not the tilt extension / contraction position of the ottoman 5r is within the operation permission range on the small space map (step 121), and the tilt extension / contraction position of the ottoman 5r is within the operation permission range on the large space map. In this case (step 121: YES), the upper operation and the extension operation of the ottoman 5r are permitted (step 122), and the rear manual operation is continued (step 123).

  On the other hand, when the tilting expansion / contraction position of the ottoman 5r is not within the permitted operation range on the small space map (step 121: NO), the rear ECU 15r adjusts the position of the tilting expansion / contraction position of the ottoman 5r within the permitted operation range (step 121). Step 124). Subsequently, the upper operation and the extension operation of the ottoman 5r are restricted (step 125), and the process proceeds to step 123 to continue the rear manual operation.

  Further, when the first restriction signal S_li1 is output (step 119: YES), the rear ECU 15r restricts the front operation of the seat cushion 2r (step 126), and restricts the upper operation and the extension operation of the ottoman 5r. After that (step 127), the process proceeds to step 123 to continue the rear manual operation. When the rear manual operation is not performed (step 118: NO), the position of the rear seat 1r is held (step 128).

Next, the processing procedure of the operation range restriction control by the front ECU 15f will be described.
As shown in FIG. 5, when the front ECU 15f acquires various signals from the various sensors and the in-vehicle network 23 (step 201), the front ECU 15f determines whether or not the front auto operation of the front seat 1f is being performed (step 202). When the front auto operation is being performed (step 202: YES), it is determined whether or not the limit signal (at least one of the first limit signal S_li1 and the second limit signal S_li2) is not input in the current calculation cycle. (Step 203). If a limit signal is input (step 203: NO), the rear operation of the seat cushion 2f and the rear operation of the seat back 3f are limited (step 204), and the front auto operation is continued (step 205). . If there is no limit signal input (step 203: YES), the process goes to step 205 without going to step 204.

  On the other hand, when the front auto operation is not performed (step 202: NO), the rear ECU 15r determines whether or not the front manual operation is performed (step 206). When the front manual operation is being performed (step 206: YES), it is determined whether or not the first limit signal S_li1 is input in the current calculation cycle (step 207). If the first limit signal S_li1 is input (step 207: YES), the rear operation of the seat cushion 2f and the rear operation of the seat back 3f are limited (step 208), and the front manual operation is continued (step 208). 209). On the other hand, when the first limit signal S_li1 is not input (step 207: NO), the process proceeds to step 209 without continuing to step 208, and the front manual operation is continued. When the front manual operation is not performed (step 206: NO), the position of the front seat 1f is held (step 210).

As described above, according to the present embodiment, the following operational effects can be achieved.
(1) When the occupant is seated on the rear seat 1r, the front ECU 15f restricts the rear operation of the seat cushion 2f and the seat back 3f by the front auto operation to be smaller than when the occupant is not seated on the rear seat 1r. I made it. Further, the rear ECU 15r operates when the occupant is seated on the rear seat 1r, when the occupant is not seated on the rear seat 1r, when the seat cushion 2r of the rear seat 1r is actuated by the rear auto operation, and when the ottoman 5r is actuated upward and downward. Compared to a smaller limit. Therefore, when at least one of the front seat 1f and the rear seat 1r performs the automatic operation with the occupant seated on the rear seat 1r, a large space is secured between the front seat 1f and the rear seat 1r. Giving a tight feeling to the occupant can be suitably suppressed. On the other hand, when the occupant is not seated in the rear seat 1r, the rear operation of the seat cushion 2f and the seat back 3f by the front auto operation is not limited as compared with the case where the occupant is seated in the rear seat 1r. The convenience of the occupant of the seat 1f can be improved suitably.

  (2) Even when the occupant is seated on the rear seat 1r, the front ECU 15f does not allow the occupant to sit on the rear seat 1r when adjusting the position of the seat cushion 2f and the seat back 3f by the front manual operation at the will of the occupant. The position adjustment in the rear direction of the vehicle is not restricted as in the case where it is not. As a result, the convenience of the occupant of the front seat 1f can be further enhanced. In the front manual operation, since it depends on the will of the occupant of the front seat 1f, for example, communication between the occupant of the front seat 1f and the occupant of the rear seat 1r can be achieved, and the occupant seated on the rear seat 1r is cramped. It is hard to give a feeling.

  (3) The rear ECU 15r does not restrict position adjustment in the front direction of the vehicle when adjusting the position of the seat cushion 2r and the ottoman 5r of the rear seat 1r by the rear manual operation by the occupant seated on the rear seat 1r. The convenience of the occupant of the rear seat 1r can be further enhanced.

  (4) A small space map and a large space map are stored in the memory 31r. Based on these maps, the seat cushion 2f and the seat back 3f are actuated by the front auto operation, the seat cushion 2r is actuated before the rear seat 1r, and the ottoman 5r. Since the upper operation and the extension operation are restricted, the calculation load on the rear ECU 15r can be reduced.

In addition, the said embodiment can also be implemented in the following aspects which changed this suitably.
In the above embodiment, one partial operation permission range for the ottoman 5r is provided in each of the small space map and the large space map. However, the present invention is not limited to this, and a plurality of partial operation permission ranges may be provided. In this case, each partial operation permission range can be set to an appropriate ratio of the maximum possible range for the ottoman 5r and an appropriate ratio of the maximum possible range for the extension / contraction range. Further, only the maximum operation permission range and the operation restriction range may be provided without providing the partial operation permission range.

  In the above-described embodiment, the boundary lines B1 and B2 of the small space map and the large space map have a constant reclining position when the relative distance is relatively long, and the reclining operation permission range is the relative distance when the relative distance is relatively close. It was set to gradually decrease toward the front of the vehicle as the distance approached. However, the present invention is not limited to this, and the setting of the boundary lines B1 and B2, that is, the range for limiting the position adjustment of the sheet element SE can be changed as appropriate. For example, the reclining position may be set to gradually decrease toward the front of the vehicle as the relative distance approaches in a range where the relative distance is relatively far, and the reclining operation permission range is set in a range where the relative distance is relatively close. May be set so as to gradually decrease toward the vehicle front side as the relative distance approaches.

  In the above embodiment, the small space map and the large space map are provided only for the rear ECU 15r, but the small space map and the large space map are provided only for the front ECU 15f, and the front ECU 15f outputs the first and second limit signals S_li1 and S_li2. It may be output. In this case, the rear ECU 15r notifies the front ECU 15f of the operating position of the seat element SE of the rear seat 1r. Further, a small space map and a large space map may be provided in the front ECU 15f and the rear ECU 15r, respectively, and the position adjustment of the seat element SE may be restricted by each ECU without outputting the restriction signal. Further, the front seat 1f and the rear seat 1r may be controlled by one ECU.

  In the above embodiment, the front ECU 15f outputs the rough operation position of the slide position of the seat cushion 2f and the reclining position of the seat back 3f as the operation position signal S_sp. However, the exact position obtained based on the pulse signals Sp1f and Sp2f A correct operation position may be output.

  In the above embodiment, when the seating of the occupant on the rear seat 1r is detected, the position adjustment of the seat element SE of the front seat 1f in the vehicle rear direction by the front auto operation or the seat element SE of the rear seat 1r by the rear auto operation is performed. Only one of the position adjustments in the vehicle front direction may be limited.

  In the above embodiment, when the seating of the occupant on the rear seat 1r is detected, the position of the seat element SE of the front seat 1f in the vehicle rear direction by the front manual operation is adjusted, and the seat element of the front seat 1f by the front auto operation is adjusted. Similar to the position adjustment of the SE in the vehicle rearward direction, the restriction may be made based on the large space map.

  In the above embodiment, when the seating of the occupant on the rear seat 1r is detected, the position of the seat element SE of the rear seat 1r in the vehicle front direction by the rear manual operation is adjusted, and the seat element SE of the rear seat 1r by the rear auto operation is adjusted. Similar to the position adjustment in the vehicle front direction, the restriction may be made based on the large space map.

  In the above embodiment, based on the small space map and the large space map, the position of the seat element SE of the front seat 1f in the vehicle rear direction by the front auto operation, and the front of the seat element SE of the rear seat 1r by the rear auto operation Limited position adjustment in direction. However, the present invention is not limited to this. For example, the position adjustments of the front seat 1f and the rear seat 1r are limited by substituting the seat elements SE of the front seat 1f and the rear seat 1r into a predetermined function expression and comparing them with threshold values. It may be determined whether or not, and the method can be changed as appropriate.

  In the above embodiment, the actuators 11f and 12f using the motors M1f and M2f as drive sources and the actuators 11r to 13r using the motors M1r to M3r as drive sources are used. If it can be adjusted, the configuration of the actuator can be changed as appropriate. Further, the operation position of each sheet element SE is not detected based on the pulse signals Sp1f and Sp2f and the pulse signals Sp1r to Sp3r. For example, a displacement sensor may be provided in each sheet element SE to directly detect the operation position. The position detection method can be changed as appropriate.

  In the above embodiment, a membrane switch that forms a pressure-sensitive portion on the seating surface 2ra of the seat cushion 2r is used as the seating sensor 22. However, the present invention is not limited thereto, and for example, a load sensor or a capacitance sensor may be used. .

  In the above embodiment, the control of the present configuration may be applied to a vehicle having three or more rows of seats. For example, when the present configuration is applied to a vehicle having three rows of seats, the first row seat may be a front seat. If the row seat is the rear seat, and the second row seat is the front seat, the third row seat is the rear seat.

  In the above embodiment, the front seat 1f is configured as a seat capable of adjusting the slide position of the seat cushion 2f and the reclining position of the seat back 3f. However, the seat element SE is not limited to this and is at least accompanied by displacement in the vehicle longitudinal direction. It is sufficient that the position of the front seat can be adjusted, and the configuration of the front seat 1f can be changed as appropriate. For example, the lift position of the seat cushion 2f may be adjustable, and in this case, the adjustment of the lift position that accompanies displacement in the rearward direction of the vehicle is limited. Similarly, the configuration of the rear seat 1r can be changed as appropriate as long as the position of the seat element SE with at least displacement in the vehicle front-rear direction can be adjusted.

  1f: front seat, 1r: rear seat, 2f, 2r ... seat cushion (seat element), 3f, 3r ... seat back (seat element), 5r ... ottoman (seat element), 11f, 11r ... seat slide actuator, 12f, 12r ... Seat reclining actuator, 13r ... Ottoman actuator, 15f ... Front ECU (operation position detection unit, control unit, restriction unit), 15r ... Rear ECU (seating detection unit, operation position detection unit, control unit, restriction unit), 21f ... Front operation switch (front operation unit), 21r ... Rear operation switch (rear operation unit), 22 ... Seat sensor, 23 ... In-vehicle network, 31f, 31r ... Memory (storage unit), B1, B2 ... Boundary line, SE ... Seat Element, M1f, M2f, M1r to M3r ... Motor, SB1, SB ... auxiliary boundary, S_li1 ... first limiting signal, S_li2 ... second limiting signal.

Claims (5)

A seating detection unit that detects seating of an occupant on a rear seat arranged side by side in the rear direction of the front seat on the vehicle front side;
An operation position detector that detects an operation position of each seat element of the front seat and the rear seat, the position of which can be adjusted by a driving force from a driving source;
A storage unit for storing a predetermined front seat position of the front seat and a predetermined rear seat position of the rear seat;
A front auto operation that automatically moves the front seat to the predetermined front seat position when a predetermined front auto operation start condition is satisfied, and a rear seat that is automatically moved to the predetermined rear seat position when a predetermined rear auto operation start condition is satisfied. A control unit that performs rear auto operation,
When the seating detection unit detects the seating of an occupant on the rear seat, based on the detection result of the operation position detection unit, the position adjustment of the seat element of the front seat in the vehicle rear direction by the front auto operation and A vehicle seat control comprising: a restricting unit that restricts at least one of position adjustment of the seat element of the rear seat in the vehicle front direction by the rear auto operation to be smaller than a case where seating of an occupant on the rear seat is not detected. apparatus. The vehicle seat control device according to claim 1,
The control unit performs a front manual operation for adjusting an operation position of a seat element of the front seat according to an operation input to the front operation unit,
The restricting unit adjusts the position of the seat element of the front seat in the vehicle rearward direction by the front manual operation even when the seating detection unit detects the seating of the passenger on the rear seat. A seat control device for a vehicle that is not limited as compared with the case where no seating is detected. In the vehicle seat control device according to claim 1 or 2,
The control unit performs a rear manual operation for adjusting an operation position of a seat element of the rear seat according to an operation input to the rear operation unit,
The restricting portion adjusts the position of the seat element of the rear seat in the vehicle front direction by the rear manual operation even when the seating detecting portion detects the seating of the passenger on the rear seat. A vehicle seat control device that is not limited to a smaller size than when seating is not detected. In the vehicle seat control device according to any one of claims 1 to 3,
The seat element of the front seat includes a seat cushion capable of adjusting a slide position by a slide operation including displacement in the vehicle longitudinal direction, and a seat back capable of adjusting a reclining position by a reclining operation including displacement in the vehicle longitudinal direction,
The seat element of the rear seat is for a vehicle including a seat cushion whose slide position can be adjusted by a slide operation including displacement in the vehicle longitudinal direction, and an ottoman whose tilt expansion / contraction position can be adjusted by a tilt expansion / contraction operation including displacement in the vehicle longitudinal direction. Sheet control device. In the vehicle seat control device according to any one of claims 1 to 4,
The storage unit
A small space map in which an operation range in which the seat element of the front seat can be adjusted and an operation range in which the position of the seat element of the rear seat can be adjusted are set so that a space between the front seat and the rear seat is small. When,
An operation range in which the position of the seat element of the front seat can be adjusted and an operation range in which the position of the seat element of the rear seat can be adjusted so that a space between the front seat and the rear seat is larger than the small space map. Remember the large space map set to
The restriction unit is
When seating of the passenger on the rear seat is not detected by the seating detection unit, based on the small space map, the position adjustment of the seat element of the front seat in the vehicle rear direction by the front auto operation and the rear auto operation Restricting at least one of the position adjustment of the seat element of the rear seat in the vehicle front direction;
When the seating detection unit detects the seating of an occupant on the rear seat, based on the large space map, the position adjustment of the seat element of the front seat in the vehicle rear direction by the front auto operation and the rear auto operation A vehicle seat control device that restricts at least one of the position adjustment of the seat element of the rear seat in the vehicle front direction.

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