JP6346226B2 - Vehicle seat control device - Google Patents

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 driving force from a driving source. Some of such control devices perform an automatic operation of moving a sheet to a predetermined sheet position corresponding to the predetermined condition by controlling the operation position of each sheet element when a predetermined condition is satisfied.

  For example, in the vehicle seat control apparatus disclosed in Patent Document 1, when the vehicle door is opened with the key switch turned on and both the accessory switch and the ignition switch turned off, the seat position (retracted) is easy for the passenger to get on and off. It is disclosed that when the vehicle door is closed after that, the vehicle moves to a seat position (driving posture) where the seat can be easily driven.

Japanese Patent Laid-Open No. 3-128731

  By the way, in the configuration of the above-mentioned Patent Document 1, the seat is set to the same seat position (retracted posture) when getting on and when getting off, but since the operation when the occupant gets on and the operation when getting off is different, It is hard to say that getting on and getting off is easy enough. Therefore, the creation of a new technology that can easily get on and off passengers and realize higher convenience has been demanded.

  An object of the present invention is to provide a vehicle seat control device that can easily get on and off and improve convenience.

  A vehicle seat control device that solves the above problems includes a door opening / closing detection unit that detects an opening / closing state of a vehicle door, and a seat back that includes a seat back that can adjust a reclining position by a driving force of a driving source as a seat element. A seating detection unit that detects seating; and a storage unit that stores, as the predetermined seat position of the seat, a boarding seat position and an unloading seat position in which the reclining position is set in the vehicle front direction relative to the reclining position at the riding seat position; When the seat detection unit detects that the occupant is seated, the door opening / closing detection unit detects that the vehicle door has changed from a closed state to an open state, and the seat is moved to the unloading seat position. And the door opening / closing detection unit detects the occupant is not seated by the seating detection unit. There has been provided when it becomes from the closed state to the open state, and a control unit for executing boarding time control including moving said sheet to said riding seat position.

  Here, when the occupant gets off, the occupant stands up from a seated state. It can be reduced and it is easy to get off. Also, when an occupant rides, the occupant leans and sits while getting into the vehicle from a standing position, so the person who leans backward in the vehicle rather than standing at a nearly vertical angle Can be prevented from leaning forward, making it easier to get on. In this respect, according to the above-described configuration, the reclining position at the getting-off seat position is set in the front direction of the vehicle relative to the reclining position at the getting-on seat position, so that passengers can easily get on and off and can improve convenience. .

  In the vehicle seat control device, the on / off control is performed when the vehicle door is changed from an open state to a closed state by the door opening / closing detection unit in a state where the seat detection unit detects that no occupant is seated. Preferably, the method further includes moving the seat to the boarding seat position.

  According to the above configuration, when it is estimated that the occupant gets off and closes the vehicle door, the seat moves to the boarding seat position. Therefore, when the passenger gets on again, the time required for the seat to move to the boarding seat position can be reduced, and the convenience can be further improved.

In the vehicle seat control apparatus, the seat is preferably a seat of a vehicle rear seat.
According to the said structure, when only the passenger | crew of a rear seat gets on and off, the boarding / alighting can be made easy and the convenience can be improved.

  In the vehicle seat control device, it is preferable that the reclining position at the dismounting seat position is set to a front end in a range in which the reclining position of the seat back can be adjusted.

According to the said structure, since the reclining position of alighting seat position becomes an angle near perpendicular | vertical, the burden to an abdominal muscle can be reduced suitably and it will become easier to get off.
In the vehicle seat control device, the control unit includes the presence / absence of seating detected by the seating detection unit and the door opening / closing detection unit regardless of whether or not the vehicle is in an activated state in the on / off control. The seat is preferably moved based on the detected opening / closing state of the vehicle door.

  According to the above configuration, even when the vehicle is in the activated state (for example, the state where the engine is activated) or the vehicle is in the stopped state (for example, the state where the engine is stopped), it is easy for passengers to get on and off to improve convenience. be able to. In particular, in the configuration in which the on / off control is applied to the seat of the rear seat as described above, for example, even when the driver remains in the vehicle with the vehicle activated and only the passenger on the rear seat gets on / off, Since the convenience can be improved easily, the effect is great.

  According to the present invention, boarding / alighting can be facilitated and convenience can be enhanced.

The schematic block diagram of the vehicle seat control apparatus. (A)-(c) is a schematic diagram which shows the change of the seat position by execution of control at the time of boarding / alighting. The flowchart which shows the process sequence of the boarding / alighting control.

Hereinafter, an embodiment of a vehicle seat control device will be described with reference to the drawings.
A seat 1 of the present embodiment shown in FIG. 1 is used for a rear seat of a vehicle. The seat 1 includes a seat cushion 2, a seat back 3 provided to be tiltable with respect to a rear end portion of the seat cushion 2, and a headrest 4 provided at an upper end of the seat back 3. The seat 1 includes an ottoman 5 that is provided so as to be tiltable with respect to the front end portion of the seat cushion 2 and is configured to be extendable and contractible. Two lower rails 6 extending in the longitudinal direction of the vehicle are provided in parallel on the floor F of the vehicle. Each of the lower rails 6 is provided with an upper rail 7 that can relatively move on the lower rail 6 in the vehicle front-rear direction. The seat cushion 2 is supported on each upper rail 7 and can be moved relative to the lower rail 6 in the vehicle front-rear direction (sliding operation) integrally with the upper rail 7.

  The seat 1 is provided with a seat slide actuator 11, a seat reclining actuator 12, an ottoman actuator 13, and an ECU 15 as a control unit that controls the operation of these actuators 11 to 13. And the sheet | seat 1 is comprised as a power seat which can adjust the operation position of each sheet | seat element SE by each actuator 11-13.

  Specifically, the seat slide actuator 11 has a motor M1 as a drive source, and slides the seat cushion 2 (seat 1 as a whole) as a seat element in the front-rear direction of the vehicle (in the left-right direction in FIG. 1). . Thereby, the seat 1 can adjust the slide position in the front-rear direction of the vehicle.

  The seat reclining actuator 12 has a motor M2 as a driving source, and the reclining operation is performed so that the position of the upper end portion of the seat back 3 moves in the front-rear direction of the vehicle. (In FIG. 1, tilting in the left-right direction). Thereby, the seat 1 can adjust the reclining position of the seat back 3. The range in which the reclining position of the seat back 3 of this embodiment can be adjusted is from the angle at which the seat back 3 is substantially horizontal from the position where the seat back 3 is tilted slightly rearward than the angle at which the seat back 3 is substantially vertical. It is set in a position slightly standing in front of the vehicle.

  The ottoman actuator 13 has a motor M3 as a drive source, and tilts the ottoman 5 as a seat element so that the position of the lower end portion thereof 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 sheet | seat 1 can adjust the tilting position and expansion-contraction state of the ottoman 5. FIG.

  The ECU 15 is connected to each of the motors M1 to M3, and operates the actuators 11 to 13 through the supply of driving power to the motors M1 to M3, that is, the seat elements SE (seat cushion 2, seat back 3, ottoman 5). ) Is controlled. Then, the ECU 15 moves the seat position of the seat 1 through control of the operation position of each seat element SE.

  Specifically, each of the motors M1 to M3 is provided with rotation sensors S1 to S3 that output a pulse signal synchronized with the rotation. That is, the pulse signals Sp1 to Sp3 output from the rotation sensors S1 to S3 are synchronized with the operations of the sheet elements SE driven by the actuators 11 to 13. Then, the ECU 15 counts (integrates) the pulse changes of the pulse signals Sp1 to Sp3 based on preset initial values, thereby detecting the operation position of each seat element SE.

  The seat 1 is provided with a seating sensor 21 that forms a pressure-sensitive portion on the seating surface 2 a of the seat cushion 2. The seating sensor 21 of the present embodiment uses a membrane switch that switches on and off when the seating surface 2a is pressed, and outputs a seating signal S_si that switches on and off depending on whether or not the seat 1 is seated. Further, a plurality of operation switches 22 for adjusting the operation position of each seat element SE by an occupant's operation are provided on the side of the seat 1 or the like. Further, a door opening / closing sensor 24 for detecting an opening / closing state of the vehicle door 23 at a position closest to the seat 1 is provided. Note that the door opening / closing sensor 24 of the present embodiment uses a courtesy switch provided at the periphery of the door opening 25 of the vehicle, and outputs a door opening / closing signal S_dr that switches on / off according to the opening / closing state of the vehicle door 23. .

  The ECU 15 receives a seating signal S_si corresponding to the seating of an occupant from the seating sensor 21 and an operation input signal S_sw corresponding to an operation input to the operation switch 22. Also, the ECU 15 is connected to the ECU 15 via the in-vehicle network 26, for example, a door opening / closing signal S_dr corresponding to the opening / closing state of the vehicle door 23 from the door opening / closing sensor 24, the vehicle starting state (for example, the operation position or start of the ignition key). Various signals such as an ignition signal S_ig indicating ON / OFF of the switch are input. Then, the ECU 15 moves the seat 1 by controlling the operation position of each seat element SE based on various input signals.

  The ECU 15 detects the occupant's seating on the seat 1 based on the seating signal S_si, and detects the opening / closing state of the vehicle door 23 closest to the seat 1 based on the door opening / closing signal S_dr. That is, in the present embodiment, a seating detection unit is configured by the ECU 15 and the seating signal S_si, and a door opening / closing detection unit is configured by the ECU 15 and the door opening / closing signal S_dr.

(Automatic operation control)
A plurality of predetermined sheet positions of the sheet 1 are stored (held) in the memory 31 as a storage unit of the ECU 15. The predetermined seat position includes, for example, a registered seat position registered according to the passenger's preference, in addition to a boarding seat position and a getting-off seat position, which will be described later. The ECU 15 controls the actuators 11 to 13 when a predetermined condition predetermined for each predetermined sheet position is satisfied, and the operation position of each sheet element SE becomes an operation position corresponding to the predetermined sheet position. Thus, the position is automatically adjusted, that is, an automatic operation for moving the sheet 1 to the predetermined sheet position is performed (automatic operation control). The predetermined condition includes, for example, an operation input to the operation switch 22 for performing an automatic operation in addition to a condition for moving the seat 1 to a boarding seat position and a getting-off seat position, which will be described later.

(Control when getting on and off)
When the ECU 15 determines that the occupant is getting out of the vehicle, the seat 15 is moved to the unloading seat position as the predetermined seat position when the occupant determines that the occupant is about to get off in order to make it easier for the occupant to get on and off and to improve convenience. And when it determines with a passenger | crew trying to board, control at the time of boarding / exiting which moves the seat 1 to a boarding seat position is performed.

  Specifically, the ECU 15 detects that the occupant is seated based on the seating signal S_si from the seating sensor 21 as a predetermined condition (alighting start condition) for determining that the occupant is about to get off. Then, based on the door opening / closing signal S_dr from the door opening / closing sensor 24, it is determined whether or not the vehicle door 23 changes from the closed state to the open state. When the vehicle door 23 changes from the closed state to the open state in a state where it is detected that an occupant is seated, the ECU 15 does not matter whether the vehicle is activated (ignition signal S_ig is turned on or off). The seat 1 is moved to the dismounting seat position. In this embodiment, the disengagement seat position is the lower end of the tiltable range when the ottoman 5 is in the most contracted state, and the slide position of the seat cushion 2 is the rear end of the slidable range. The position is set to a position that is the front end of an adjustable (holdable) range.

  Specifically, for example, as shown in FIG. 2A, when the occupant is seated in a state where the seatback 3 is tilted rearward and the ottoman 5 is tilted upward and extended. When the vehicle door 23 is opened, as shown in FIG. 2B, the seat 1 automatically moves to the dismounting seat position. Note that the ECU 15 of this embodiment adjusts the position of the ottoman 5, the seat cushion 2, and the seat back 3 in this order.

  The ECU 15 is based on the door opening / closing signal S_dr in a state in which it is detected that the occupant is not seated based on the seating signal S_si as a predetermined condition for determining that the occupant has exited (alighting completion condition). Whether the vehicle door 23 changes from the open state to the closed state is determined. When the vehicle door 23 changes from the open state to the closed state in a state where it is detected that no occupant is seated, the ECU 15 brings the seat 1 to the boarding seat position regardless of the start state of the vehicle. Moving. The riding seat position of the present embodiment is set to a position where the tilt position is the lower end of the tiltable range when the ottoman 5 is most contracted, and the slide position of the seat cushion 2 is the rear end of the slidable range. Yes. Then, the reclining position of the seat back 3 is an angle (for example, about 4 °) that is tilted more backward than the reclining at the dismounting seat position, and is set so as not to substantially interfere with the door opening 25 of the vehicle ( (Refer FIG.2 (c)).

  Specifically, for example, as shown in FIG. 2 (b), when the occupant gets off the seat 1 at the dismounting seat position and closes the vehicle door 23, the seat 1 is automatically turned on as shown in FIG. 2 (c). To move to the boarding seat position.

  Further, the ECU 15 detects that the occupant is not seated based on the seating signal S_si as a predetermined condition (boarding start condition) for determining that the occupant is about to get on, and opens and closes the door opening / closing signal S_dr. Based on this, it is determined whether or not the vehicle door 23 changes from the closed state to the open state. When the vehicle door 23 changes from the closed state to the open state in a state where it is detected that no occupant is seated, the ECU 15 brings the seat 1 to the boarding seat position regardless of the start state of the vehicle. Moving. When the passenger gets off and closes the vehicle door 23 as described above, the seat 1 moves to the position of the passenger seat. However, for example, the passenger in the adjacent seat erroneously switches the operation switch 22 until the passenger gets on again. The ECU 15 moves the seat 1 to the boarding seat position when the boarding start condition is satisfied, for example, when the seat 1 is in a seat position different from the boarding seat position by operation.

Next, a processing procedure for getting on and off by the ECU 15 will be described.
As shown in FIG. 3, the ECU 15 first determines whether or not an occupant is seated on the seat 1 based on the seating signal S_si (step 101), and detects that the occupant is seated (step 101). Step 101: YES), it is determined whether or not the vehicle door 23 has changed from the closed state to the open state based on the door opening / closing signal S_dr. (Step 102). When the vehicle door 23 changes from the closed state to the open state (step 102: YES), the seat 1 is moved to the dismounting seat position (step 103). On the other hand, when the vehicle door 23 does not change from the closed state to the open state (step 102: NO), the seat position of the seat 1 is kept unchanged (step: 104).

  When the ECU 15 detects that no occupant is seated based on the seating signal S_si (step 101: NO), the vehicle door 23 changes from the closed state to the open state based on the door opening / closing signal S_dr. Whether or not (step 105). When the vehicle door 23 changes from the closed state to the open state (step 105: YES), the seat 1 is moved to the boarding seat position (step 106). On the other hand, when the vehicle door 23 does not change from the closed state to the open state (step 105: NO), it is determined whether or not the vehicle door 23 has changed from the open state to the closed state (step 107). When the vehicle door 23 changes from the open state to the closed state (step 107: YES), the process proceeds to step 106 to move the seat 1 to the boarding seat position. When the vehicle door 23 does not change from the open state to the closed state (step 107: NO), the process proceeds to step 104 and the seat position of the seat 1 is held without being changed.

As described above, according to the present embodiment, the following operational effects can be achieved.
(1) When the vehicle door 23 is changed from the closed state to the open state in a state where it is detected that an occupant is seated, the seat 1 is moved to the dismounting seat position, and the reclining position at the dismounting seat position is The reclining position of the back 3 was set to the front end in a range where adjustment (holding) is possible. Therefore, when the occupant stands up from the seated state of the seat 1 and gets off the vehicle, the burden on the abdominal muscles can be suitably reduced, and the vehicle can easily get off. Further, when the vehicle door 23 is changed from the closed state to the open state in a state where it is detected that no occupant is seated, the seat 1 is moved to the boarding seat position, and the reclining position at the boarding seat position is changed to the getting-off seat. The seat back 3 is set so that it hardly interferes with the door opening 25 of the vehicle in the vehicle rearward direction from the reclining position at the position. For this reason, when the occupant gets on, the door opening 25 can be prevented from being narrowed by the seat back 3, and the occupant can be prevented from leaning forward, making it easier to get on. Thereby, passengers can easily get on and off, and convenience can be improved.

  (2) When the vehicle door 23 is changed from the open state to the closed state in a state where it is detected that the occupant is not seated, that is, when it is estimated that the occupant gets off and closes the vehicle door 23, the seat 1 Moved to the riding seat position. Therefore, when the passenger gets on again, the time required for the seat 1 to move to the boarding seat position can be reduced, and the convenience can be further improved.

(3) Since the seat 1 is a seat for the rear seat of the vehicle, even when only the passenger in the rear seat gets on and off, it is possible to easily get on and off and improve convenience.
(4) Since the ECU 15 executes the on / off control when a predetermined condition is satisfied regardless of the start state of the vehicle, the vehicle stops even if the vehicle is in the start state (for example, the state where the engine is started). Even in a state (for example, a state where the engine is stopped), passengers can easily get on and off, and convenience can be improved. In particular, in the configuration in which the control at the time of getting on and off is applied to the seat 1 of the rear seat as in this embodiment, for example, when the driver remains in the vehicle while the vehicle is in an activated state, only the passenger in the rear seat gets on and off, Since the boarding / alighting can be facilitated and the convenience can be enhanced, the effect is great.

In addition, the said embodiment can also be implemented in the following aspects which changed this suitably.
In the above embodiment, the reclining position at the getting-off seat position is the front end in the range in which the reclining position of the seat back 3 can be adjusted, but if the reclining position is in the vehicle front direction relative to the reclining position at the riding seat position, the reclining position is You may set to the vehicle rear direction rather than the front end of the adjustable range. Note that the reclining position at the dismounting seat position is preferably an angle close to vertical. For example, in a seat configured such that the reclining operation is possible until the seat back 3 contacts the seating surface 2a of the seat cushion 2, the seat back 3 can be a front end in a range that can be held by the lock mechanism. Further, the sliding position of the seat cushion 2 at the dismounting seat position, the tilting position of the ottoman 5 and the expansion / contraction state can be appropriately changed. Even if comprised in this way, the burden to a passenger | crew's abdominal muscles can be reduced and it will become easy to get off.

  In the above embodiment, the reclining position at the boarding seat position is set so that the seat back 3 hardly interferes with the door opening 25 of the vehicle. However, if the reclining position is located in the vehicle rearward direction from the reclining position at the dismounting seat position, For example, the position may slightly interfere with the door opening 25. Further, the sliding position of the seat cushion 2 at the dismounting seat position, the tilting position of the ottoman 5 and the expansion / contraction state can be appropriately changed. Even if comprised in this way, it can reduce that a passenger | crew leans forward and it becomes easy to board.

  In the above embodiment, the seat 1 is configured as a seat that can adjust the slide position of the seat cushion 2, the reclining position of the seat back 3, the tilting position of the ottoman 5, and the stretched state. It suffices if the reclining position can be adjusted. Further, for example, the lift position (vertical direction position) and tilt position of the seat cushion 2 may be adjustable, and the configuration of the seat 1 can be changed as appropriate.

  -In above-mentioned embodiment, when performing control at the time of getting on and off, in addition to the presence or absence of seating and the open / closed state of the vehicle door 23, the seat 1 may be moved in consideration of, for example, the start state of the vehicle. May be.

In the above embodiment, when the vehicle door 23 is changed from the open state to the closed state in a state where it is detected that no occupant is seated, the seat 1 may not be moved to the boarding seat position.
In the above embodiment, the seat 1 may be used as a vehicle front seat.

  In the above embodiment, a membrane switch that forms a pressure-sensitive portion on the seating surface 2a of the seat cushion 2 is used as the seating sensor 21. 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 courtesy switch provided at the periphery of the door opening 25 is used as the door opening / closing sensor 24. However, the present invention is not limited to this, and for example, a switch whose output signal changes according to the operation of the door knob of the vehicle door 23, etc. May be used.

  In the above embodiment, the actuators 11 to 13 using the motors M1 to M3 as drive sources are used. However, the present invention is not limited to this, and the configuration of the actuators can be changed as long as the operation position of each sheet element can be adjusted. Further, the operation position of each sheet element SE may not be detected based on the pulse signals Sp1 to Sp3. For example, a displacement sensor may be provided in each sheet element SE to directly detect the operation position. It can be changed.

Next, technical ideas that can be understood from the above embodiments and other examples will be described below together with their effects.
(A) The reclining position at the boarding seat position is set so that the seat back does not interfere with the door opening that is opened and closed by the vehicle door in the vehicle rearward direction than the reclining position at the dismounting seat position. Sheet control device. According to the said structure, when a passenger | crew gets on, it can suppress that a door opening part is narrowed by a seat back, and can board a passenger | car more easily.

  DESCRIPTION OF SYMBOLS 1 ... Seat, 2 ... Seat cushion (seat element), 3 ... Seat back (seat element), 4 ... Headrest, 5 ... Ottoman, 11 ... Seat slide actuator, 12 ... Seat reclining actuator, 13 ... Ottoman actuator, 15 ... ECU (Door opening / closing detection unit, seating detection unit, control unit), 21 ... seating sensor, 22 ... operation switch, 23 ... vehicle door, 24 ... door opening / closing sensor, 25 ... door opening, 26 ... in-vehicle network, 31 ... memory ( Storage unit), M1 to M3, motor (drive source), SE, seat element, S_dr, door opening / closing signal, S_si, seating signal.

Claims (5)

A door opening / closing detection unit for detecting an opening / closing state of the vehicle door;
A seat detection unit that detects seating of an occupant on a seat including a seat back that can adjust a reclining position by a driving force of a driving source as a seat element;
As a predetermined seat position of the seat, a storage unit that stores a boarding seat position and a getting-off seat position in which the reclining position is set in the vehicle front direction relative to the reclining position at the riding seat position;
When the seat detection unit detects that an occupant is seated, and the door opening / closing detection unit detects that the vehicle door has changed from a closed state to an open state, the seat is moved to the unloading seat position. When the vehicle door is moved from the closed state to the open state by the door opening / closing detection unit while the seat detection unit detects that no occupant is seated, the seat is moved to the riding seat position. A vehicle seat control device comprising: a control unit that executes on / off control including: The vehicle seat control device according to claim 1,
When the vehicle door is changed from an open state to a closed state by the door opening / closing detection unit in a state in which the seating detection unit detects that an occupant is not sitting, A vehicle seat control device including moving to a position. In the vehicle seat control device according to claim 1 or 2,
The vehicle seat control device, wherein the seat is a seat of a vehicle rear seat. In the vehicle seat control device according to any one of claims 1 to 3,
The vehicle seat control device in which the reclining position at the dismounting seat position is set at a front end in a range in which the reclining position of the seat back can be adjusted. In the vehicle seat control device according to any one of claims 1 to 4,
Whether the vehicle is in an activated state or not in the on / off control, the control unit detects whether the seat is detected by the seating detection unit and whether the door is detected by the door opening / closing detection unit. A vehicle seat control device that moves the seat based on a state.

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