JP2003205776A - Auxiliary device for assisting ingress and egress for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a seated occupant's physical burden when standing up for ingress and egress. <P>SOLUTION: A seat-back upper part 21 is inclination-operated rearwards to a rear seat side when start of getting-out of an occupant in a rear seat is detected, the seat-back upper part 21 is inclination-operated frontwards to an upright direction to assist standing-up of the upper body of an occupant 22 (b) after detecting that an end part of the seat-back upper part 21 is grasped by the occupant in the rear seat (a), and the seat-back upper part 21 is inclination-operated frontwards up to a position of the seat-back upper part 21 before the upper part 21 is inclination-operated rearwards (d) when the occupant 22 finishes an egress action (c). <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle boarding / alighting assistance device for assisting an occupant in getting in and out of a vehicle.

[0002]

2. Description of the Related Art Conventionally, as an on-off assistance device for a vehicle, for example, a seat mechanism disclosed in Japanese Unexamined Patent Publication No. 5-340015 or an instrument panel disclosed in Japanese Unexamined Patent Publication No. 11-334447 has an occupant's body. It is known that a supporting grip is installed.

[0003]

However, in the conventional vehicle boarding / alighting assistance device described above, since the handle for simply lifting the body of the occupant when getting on and off is provided, the occupant of the occupant gets on when getting off the vehicle. Must be lifted by the upper limbs with their own power. Therefore, a problem is that the seating occupant still needs a large amount of power with only the conventional vehicle boarding / alighting assistance device, and that the burden on the body is very large for the elderly who tend to have weakened muscle strength as a whole. There was a point.

Therefore, the present invention has been proposed in view of the above-mentioned circumstances, and a vehicle boarding / alighting assistance device for a vehicle capable of reducing the physical burden on a seated person when performing an operation of standing up. It is provided.

[0005]

In order to solve the above-mentioned problems, in a vehicle passenger assistance device according to a first aspect of the present invention, the vehicle passenger assistance device is provided in a front seat of a vehicle, and an upper portion and a lower portion are connected by a center folding drive mechanism. Seat back, a detecting means for detecting that the upper portion of the seat back is gripped by an occupant in the rear seat of the vehicle, and a driving means for driving the middle folding driving mechanism to perform the middle folding operation of the upper seat back. With. Further, in this vehicle loading / unloading assistance device, when the drive control means detects that the occupant of the rear seat is getting off, the drive means is controlled so that the upper portion of the seat back is tilted backward to the rear seat side, and the rear portion is detected by the detection means. After detecting that the upper part of the seat back is gripped by the occupant of the seat, the drive means is controlled to drive the upper part of the seat back in the standing direction.

According to a second aspect of the present invention, there is provided a vehicle on / off assistance device.
2. The vehicle boarding / alighting assistance device according to claim 1, wherein the drive control means controls the driving force of the center folding drive mechanism when driving the seatback upper part in the upright direction, and at the same time, controls the driving force of the seatback upper part. The feature is that the standing position is controlled by adjusting the center bending angle.

In the vehicle entry / exit assistance device according to claim 3,
2. The vehicle boarding / alighting assistance device according to claim 1, wherein the drive control means sets the middle bending angle of the seat back upper portion to be the occupant posture angle of the front seat after detecting the completion of getting off of the occupant of the rear seat. The drive means is controlled as described above.

In the vehicle entry / exit assist device according to claim 4,
The vehicle boarding / alighting assistance apparatus according to claim 1, wherein the drive control means detects the start of boarding of a rear seat and controls the drive means so as to tilt the upper part of the seat back toward the rear seat. It is characterized by

In the vehicle entry / exit assist device according to claim 5,
The vehicle boarding / alighting assistance apparatus according to claim 1, wherein the drive control means detects the completion of getting off the passenger in the rear seat and the completion of getting in the passenger in the rear seat, and then sets the middle bending angle of the seat back to the front. The driving means is controlled so that the occupant posture angle of the partial seat is set.

[0010]

According to the vehicle loading / unloading assistance device of the first aspect, when it is detected that the occupant of the rear seat starts getting off, the upper portion of the seat back is tilted backward toward the rear seat, and the occupant of the rear seat is seated back. After detecting that the upper part is gripped, the upper part of the seat back is driven in the standing direction, so the driving force for driving the upper part of the seat back in the standing direction can be used as auxiliary force for pulling up the upper body of the occupant in the standing direction. It is possible to reduce the physical burden on the seated person in the operation of erecting the upper body in the initial stage of the getting-off operation.

According to the vehicle boarding / alighting assistance device of the second aspect, when the upper portion of the seat back is driven in the upright direction,
While controlling the driving force of the center-bending drive mechanism and adjusting the center-bending angle of the upper part of the seatback to control the standing position, the upper body can be adjusted according to the degree of physical function that varies depending on the occupant. The operation of standing up can be assisted.

According to the vehicle loading / unloading assistance device of the third aspect, since the middle folding angle of the seat back is set as the occupant posture angle of the front seat after the completion of getting off the occupant of the rear seat is detected, the rear seat. Even if the upper part of the seat back of the front seat is driven to assist the exit of the vehicle, it is possible to set the position of the upper seat back to an appropriate position for the occupant of the front seat again after the exit of the rear seat is completed.

According to the vehicle boarding / alighting assistance device of the fourth aspect of the invention, since the start of boarding of the rear seat is detected and the upper portion of the seat back is tilted backward to the rear seat side, even when the passenger is riding in the rear seat. The operation of supporting the upper body of the occupant can be assisted.

According to the vehicle loading / unloading assistance device of the fifth aspect, after detecting the completion of the occupant of the rear seat and the completion of the occupant of the rear seat, the middle bending angle of the upper part of the seat back is set to the occupant of the front seat. Since the posture angle is adopted, even if the upper seat back of the front seat is driven to assist the getting-off and getting-in motion, the seat back suitable for the occupant of the front seat is again provided after the getting-on / off of the rear seat is completed. It can be in the upper position.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

The present invention is applied to a vehicle boarding / alighting assistance device configured as shown in FIG. 1, for example.

[Construction of Vehicle Auxiliary Auxiliary Device] A vehicle passenger aide includes a rear seat door handle open / close detection sensor 1 provided on an inner door handle on the rear seat side of the vehicle and an outer side on the rear seat side of the vehicle. A rear seat exterior door handle open / close detection sensor 2 provided on the door handle, and a rear door side seat cushion load detection sensor 3 provided on the seat cushion on the door side of the rear seat.

A sensor 1 for detecting the opening / closing of the door handle in the rear seat
Is connected to the inner door handle for opening the door by an occupant seated in the rear seat, and detects the operation of the inner door handle. Rear seat door handle open / close detection sensor 1
Outputs a sensor signal to the rear seat door opening / closing detection unit 4 when detecting that the inner door handle is operated while the door is in the closed state.

Rear seat outside door handle open / close detection sensor 2
Is connected to an outside door handle for opening the door on the rear seat side from the outside of the vehicle, and detects an operation of the outside door handle. Rear seat exterior door handle open / close detection sensor 2
Outputs a sensor signal to the rear seat door opening / closing detection unit 4 when detecting that the outer door handle is operated while the door is in the closed state.

The seat cushion load detection sensor 3 on the rear seat side is connected to the seat cushion portion of the rear seat,
Detects the load when the occupant is seated in the back seat.
The rear seat side seat cushion load detection sensor 3 outputs a sensor signal according to the load applied to the seat cushion portion to the rear seat side seat cushion load detection portion 5.

Further, the vehicle entry / exit assist device includes a rear seat door open / close detection unit 4 connected to a rear seat interior door handle open / close detection sensor 1 and a rear seat exterior door handle open / close detection sensor 2.
And a rear seat side seat cushion load detection unit 5 connected to the rear seat side seat cushion load detection sensor 3,
The boarding / alighting judgment part 6 is provided.

The rear door opening / closing detecting section 4 inputs sensor signals from the rear seat inside door handle opening / closing detection sensor 1 and the rear seat outside door handle opening / closing detection sensor 2 to operate the inside door handle or outside door handle. The opening / closing state of the door for getting on / off the rear seat is detected.

Seat cushion load detector 5 on the rear door side
Detects the load applied to the seat cushion portion of the rear seat from the sensor signal from the rear seat side seat cushion load detection sensor 3.

The boarding / alighting judgment unit 6 detects the open / closed state of the rear seat door detected by the rear seat door open / close detection unit 4, and the load applied to the seat cushion detected by the rear seat side seat cushion load detection unit 5. From this, it is judged whether the occupant is getting on or off the rear seats and getting on or off.

The boarding / alighting judgment section 6 stores a boarding / alighting judgment table as shown in FIG. 2 in advance, and compares the detected opening / closing state of the rear seat door and the seat cushion load with the boarding / alighting judgment table for the rear seat. Determine the occupant's entry / exit action. Specifically, the boarding / alighting determination unit 6 determines that the boarding operation is started when the inner door handle is not operated but the outer door handle is operated and there is no seat cushion load. On the other hand, the boarding / alighting determination unit 6
When the inner door handle is operated, the outer door handle is not operated, and the seat cushion load is present, it is determined that the dismounting operation is started.

Further, the vehicle boarding / alighting assistance device has a front seat slide state detection sensor 7, a recliner state detection sensor 8, a front seat middle folding drive unit 9, and a front seat middle folding state detection sensor 10 on the front seat side of the vehicle. And a front seat back upper part load detection sensor 11 and a front seat back upper end load detection sensor 12.

In this example, the front seat is composed of a seat cushion portion on which a passenger is seated as a driver's seat or a passenger seat, and a seat back portion which supports the back of the passenger in a seated state. The seat back portion is divided into a seat back upper portion and a seat back lower portion that support the vicinity of the occupant's head, and the seat back upper portion and the seat back lower portion are connected independently or in a relatively tiltable state. It is connected via a connecting mechanism. In this front seat, the bending angle between the upper portion of the seat back and the lower portion of the seat back is adjusted by the operation of the connecting mechanism.

The front seat slide state detection sensor 7 is
It is connected to the seat cushion part of the front seat, detects the sliding position of the seat cushion part to detect the front-rear position with respect to the rear seat of the front seat, and outputs a sensor signal to the front seat folding-in drive control part 13. .

The recliner state detection sensor 8 detects the state of the recliner in which the lower portion of the seat back is inclined with respect to the seat cushion portion. The recliner state detection sensor 8 detects the angle of the lower portion of the seat back with respect to the seat cushion portion by detecting the state of the recliner.

The front seat middle folding drive unit 9 is composed of, for example, an electric motor, and drives the upper portion of the seat back by operating the connecting mechanism to generate a driving force for adjusting the middle folding angle. The driving force and the stop position (the position of the upper end of the seat back) of the front seat middle folding drive unit 9 are controlled according to the control of the front seat middle folding drive control unit 13. The front seat bending driving unit 9 functions as a driving unit of the vehicle boarding / alighting assistance device by performing such an operation.

The front seat middle bending state detection sensor 10 is connected to the connecting mechanism and detects the middle bending angle between the seat back lower part and the seat back upper part.

Front seat back upper load detection sensor 11
Detects the load applied to the upper part of the seat back by the occupant sitting on the front seat and supporting the back.

Further, the vehicle entry / exit assisting device includes a front seat middle folding drive control unit 13, a front seat back upper load detection unit 14, and a front seat back upper end load detection unit 15.

The front-folding-bending-drive control section 13 includes a seat cushion sliding state and a recliner state detected by the front-seat seat slide state detecting sensor 7, the recliner state detecting sensor 8 and the front-seat middle folding state detecting sensor 10. In accordance with the middle-folded state and the control of the front-seat seat-back drive determination unit 19, the front-seat center-folded drive unit 9 is driven to drive the upper portion of the seat back. As a result, the front seat middle folding drive control unit 13 drives the front seat middle folding drive unit 9 to tilt rearward so that the seat back upper portion tilts backward, and also causes the seat back upper portion to tilt forward in the standing direction. The front folding driver 9 is driven forward.

The front seat back upper load detecting portion 14 is
The sensor signal from the front seat back upper part load detection sensor 11 detects the load on the upper part of the seat back applied by the occupant sitting on the front seat. The front seat back upper end load detection unit 15 detects the load on the upper end of the seat back gripped when getting on and off the rear seat based on the sensor signal from the front seat back upper end load detection sensor 12. The front seat back upper end load detection sensor 12 and the front seat back upper end load detection unit 15 function as a detection unit of the vehicle boarding / alighting assistance device by operating in this manner.

The vehicle boarding / alighting assistance device further includes a voice message providing unit 16 and a voice message control unit 17.

The voice message providing unit 16 is composed of a sound emitting mechanism such as a speaker, and the voice message control unit 1 is provided.
A voice message is provided to the occupant according to the voice signal from 7. The voice message providing unit 16 is arranged at a position where a voice is output to an occupant sitting on the front seat when getting on and off the rear seat. Voice message control unit 17
According to the control of the front seat back drive determination unit 19,
The voice message providing unit 16 is controlled to emit the voice message.

The vehicle boarding / alighting assistance device further includes a front seat back state storage unit 18 and a front seat back drive determination unit 19.

The front seat seat back state storage unit 18 is composed of a memory for temporarily storing information, and temporarily stores the seat back state from the front seat seat back drive determination unit 19, and the contents thereof are stored in the front seat. Seat back drive determination unit 1
Read by 9.

The front seat seat back drive determination unit 19 assists the passengers getting on and off the rear seats by controlling the respective units of the vehicle boarding / alighting assistance device described above. The front seat seat back drive determination unit 19 mainly controls the front seat middle folding drive control unit 13 so as to drive the front seat middle folding drive unit 9 forward or rearward according to the determination by the boarding / alighting determination unit 6. As a result, the boarding / alighting assist process is carried out to assist the boarding / alighting. The details of the boarding / alighting assistance process will be described later.

[Auxiliary boarding / alighting operation of vehicle boarding / alighting auxiliary device]
Next, the boarding / alighting assistance operation of the vehicle boarding / alighting assistance device will be described with reference to the flowchart of FIG.

In the vehicle entry / exit assisting device, first, in step S1, the front seat back drive determination unit 19 determines whether or not the ingress / egress action is detected from the determination result by the ingress / egress determination unit 6, and the ingress / egress action is performed. If it is determined that it has been detected, the process proceeds to step S2. At this time, in the vehicle boarding / alighting assistance device, the boarding / alighting determination unit 6 detects the start of the boarding / alighting operation from the sensor signals detected by the rear seat door handle opening / closing detection sensor 1 and the rear seat outside door handle opening / closing detection sensor 2, and then Based on the sensor signal detected by the seat door side seat cushion load detection sensor 3, the rear seat door side seat cushion load detection unit 5 detects the load of the rear seat, and the boarding / alighting judgment unit 6 refers to the boarding / alighting judgment table shown in FIG. Then, the direction of the boarding action or the getting off action is determined. Here, when the inside door handle is operated and the load is not detected by the seat cushion load detection sensor 3 on the rear seat side, the boarding / alighting judgment part 6 is carried out by an occupant other than the rear seat occupant. Judge that the handle has been operated.

In step S2, the front seat back drive determination unit 19 determines from the load on the upper seat back detected by the front seat back upper load detection sensor 11 and the front seat back upper load detection unit 14 to determine the front seat. If it is determined that the occupant is seated in the front seat, and if it is determined that the occupant is seated in the front seat, the process proceeds to step S3. If it is determined that the occupant is not seated in the front seat, step S4 is performed. Proceed to.

In step S3, the front seat back drive determination unit 19 causes the upper seat back to tilt backward when the occupant seated in the rear seat performs the ingress / egress operation. The voice message control unit 17 is controlled to notify the occupant seated in the front seat that the upper part of the seat back is tilted backward in order to raise the vehicle and wait. Is emitted and the process proceeds to step S4.

In step S4, the front seat back drive determination unit 19 inputs the sensor signals from the recliner state detection sensor 8 and the front seat middle folding state detection sensor 10 via the front seat middle folding drive control unit 13. The front seat state is stored in the front seat back state storage unit 18, and the process proceeds to step S5.

In step S5, the front seat back drive determination unit 19 determines whether or not the boarding motion is detected in step S1. When it is determined that the boarding motion is detected, the process proceeds to step S6, and the boarding operation is performed. When it is determined that the dismounting motion is detected instead of the motion, the process proceeds to step S7.

In step S6, the front seat back drive determination unit 19 outputs a control signal for inclining the seat back upper end position to the predetermined position to the predetermined position to the front seat middle folding drive control unit 13, thereby causing the front seat middle folding. Drive controller 13
Drives the front middle folding drive unit 9 by step S10.
Proceed to. Here, the predetermined position is, for example, set in advance by the occupant and set to a position where it is easy for the occupant to get into the rear seat, and is stored in advance in the front seat back drive determination unit 19 or the front seat folding drive control unit 13. Has been done.

In step S6, the front seat middle folding drive control section 13 first, as shown in FIG.
In step 21, a target value of a movable amount for setting the upper end position of the seat back to a predetermined position is set, and in order to operate the upper portion of the seat back by the movable amount set in the next step S22, a drive signal is sent to the front seat middle folding drive section 9. Is output, and the processes of steps S22 and S23 are repeated until it is determined that the target value set in step S23 is reached. Further, the target value set in step S21 is
It may be a movable amount, or may be a center bending angle.

On the other hand, in step S7 after it is determined that the vehicle is in the process of getting off the vehicle, a control signal for inclining the upper portion of the seat back to a predetermined position is output to the middle-bending-folding drive control section 13 so that the front seat The folding drive control unit 13 drives the front middle folding drive unit 9 to tilt backward, and the process proceeds to step S8. At this time, the front seat seat back drive determination unit 1
9 is a front seat middle folding drive control unit 1 for performing the processing of FIG.
3 is controlled, and a control signal for displacing the seat back upper end position to the center bending angle for setting a predetermined position and setting the angle target value is output to the front seat middle bending driving control unit 13. As a result, the front seat middle-bending drive unit 9 is monitored by the front seat middle-bending drive control unit 13 until the target angle value is reached while monitoring the middle seat bending angle.
Drive backward.

Here, the predetermined position may be the same position as the predetermined position at the time of getting on in step S6, or may be set to a position where the passenger can easily get off the vehicle.

In step S8, when the front seat back drive determination unit 19 determines that the front seat back upper end load detection unit 15 has detected the load due to the grip of the seat back upper end, the process proceeds to step S9. Proceed with processing.

In step S9, the front seat back drive determination unit 19 outputs a control signal for raising the upper portion of the seat back tilted backward in step S7 to the front seat folding drive control unit 13 to cause the front seat back folding drive control unit 13 to rise. The center folding drive unit 9 is driven to tilt forward in the standing direction, and the process proceeds to step S10. At this time, the front seat back drive determination unit 19 controls the driving force of the front seat bending drive unit 9 so as to erect the upper body of the occupant who grips the upper end of the seat back, and the seat back erects. Adjust the position. Further, the front-seat middle-bending drive control unit 13 drives the front-seat middle-bending drive unit 9 while detecting the middle-bending angle by the front-seat middle-bending state detection sensor 10 until the target value is reached.

The front seat seat back drive determination unit 19 sets the driving force and the standing position of the seat back in advance according to the degree of physical function of the occupant, and the front seat is set so that the driving force and the standing position are set. You may control the center folding drive control part 13 and may perform the process of step S9.

In step S10, the front seat seat back drive determination unit 19 determines whether or not the passenger's getting on / off operation is completed. If it is determined that the getting on / off operation is completed, the process proceeds to step S11.

At this time, the front seat seat back drive determination unit 1
As a result, when the passenger dismounts, the occupant is not seated in the rear seat from the detection result of the seat cushion load detection unit 5 on the rear door side, and the upper end of the seat back is detected from the detection result of the front seat back upper end load detection unit 15. When it is determined that the passenger is not in control and the door is in the closed state based on the detection result of the rear seat door opening / closing detection unit 4, it is determined that the exit operation is completed. On the other hand, the front seat back drive determination unit 19 detects the passenger seated in the rear seat based on the detection result of the rear seat side seat cushion load detection unit 5 at the time of boarding, and the front seat back upper end load detection unit 15 detects the seat occupant. When it is determined from the detection result that the upper end of the seat back is not gripped by the occupant and the door is in the closed state based on the detection result of the rear seat door opening / closing detection unit 4, it is determined that the riding operation is completed.

In step S11, the front seat back drive determination unit 19 determines from the upper end position of the seat back after tilting backward in step S6 or the upper end position of the seat back after standing up in step S9 to step S4.
A control signal for returning to the seat back state stored in the front seat back state storage unit 18 is output to the front seat middle folding drive control unit 13 to drive the front seat middle folding drive unit 9 to end the processing. . That is, in this step S11, the center folding angle of the upper portion of the seat back is set to the riding posture angle for the front seat occupant.

Next, the operation of each part by performing such processing will be described with reference to the timing chart of FIG. 5, and the operation of the upper part of the seat back and the operation of the occupant will be described with reference to the state transition diagrams of FIGS. 6 and 7. To do. In addition, in the example of FIG.
The figure shows the situation where the passenger dismounts from the state in which he / she is seated in the back seat and then re-enters the back seat.

First, at time T0, the inside door handle is operated to detect the boarding operation of the occupant 22 (see FIG. 5).
(E)), The voice message control unit 17 drives the voice message providing unit 16 to provide the voice message from time T0 to time T1 (FIG. 5 (d)).

Next, during the time T1 to the time T2, the center folding angle is controlled by driving the front seat middle folding driving unit 9 so as to tilt the seat back upper portion 21 backward (FIG. 5 (b)). It is set to a predetermined angle set as the center bending angle at the early stage of getting off (FIG. 5 (c)). As a result, as shown in FIG. 6A, the occupant 22 seated in the rear seat 23 sets the upper end portion of the seat back upper portion 21 to a seat back upper end portion position where the occupant 22 can grip the occupant 22 from time T2 onward. The getting-off operation is started (FIG. 5A).

The occupant 22 is seated on the upper part 21 of the seat back.
When it is detected that the upper end of the front seat has been gripped, the front seat back drive determination unit 19 controls the front seat folding drive control unit 13 so as to drive the front seat middle folding drive unit 9 forwardly tilted after time T3. (FIG. 5B), the center bending angle is set to the predetermined angle for getting on and off at time T4. That is, the upper part of the occupant 22 is erected by shifting the seat back upper portion 21 from the state shown in FIG. 6A to the state shown in FIG. 6B by tilting the seat back upper portion 21 forward. Assist movement.

When the middle bending angle becomes a predetermined angle when getting on and off, the occupant 22 operates as shown in FIG. 6C, and it is determined at time T5 that the occupant 22 has finished getting off (FIG. 5).
(E)), the front seat seat back drive determination unit 19 is shown in FIG.
As shown in (d), the front seat back state storage unit 18
The upper part 21 of the seat back before the time T1 stored in
The front middle folding drive unit 9 is driven so as to return to the above state (FIGS. 5B and 5C).

As described above, when the outside door handle is operated at time T7 to detect the start of boarding in the state where the exit of the vehicle is completed (FIG. 5 (e)), the voice message control unit 1
The voice message providing unit 16 is driven by 7 and time T
Voice messages are provided from 7 to time T8 (FIG. 5).
(D)). Then, the front seat seat back drive determination unit 19
From the time T8 onward, the front seat middle-bending drive unit 9 is driven to tilt rearward so that the center-bending angle becomes the predetermined position for getting on and off (FIG. 5).
As shown in (b), (c)) and FIG. 7 (a), the seatback upper portion 21 is tilted backward.

In this state, as shown in FIG. 7 (b), the occupant 22 grips the upper end of the seat back upper portion 21 to perform a boarding operation, and as shown in FIG. 7 (c), the occupant 22 moves to the rear seat 23. It is detected by the seat cushion load detection sensor 3 on the rear door side at time T11 that the passenger is seated in the vehicle and the ride is completed (FIGS. 5A and 5E). In response to this, the front seat back drive determination unit 19 restores the middle bending angle during the entry / exit held from time T9 to time T11 to the previously stored middle bending angle during driving. The front middle folding drive unit 9 is driven (FIGS. 5B and 5C) to tilt the upper portion of the seat back forward.

[Effects of the Embodiment] As described above in detail, according to the vehicle entry / exit assisting device of the present embodiment, when it is detected that the occupant in the rear seat has started getting off, the upper part of the seat back is moved to the rear seat. The seat back upper part is moved in the upright direction after detecting that the upper end of the seat back is gripped, so that the driving force for driving the seat back upper part in the upright direction is raised. This can be used as an auxiliary force for pulling up in the direction, and the physical burden on the seated person in the operation of erecting the upper body in the early stage of the getting-off operation can be reduced.

Further, according to the vehicle boarding / alighting assistance device,
When the upper portion of the seat back is driven in the standing direction, the driving force of the front seat middle folding driving unit 9 is controlled, and the standing position is controlled by adjusting the middle folding angle of the upper portion of the seat back. It is possible to assist the operation of standing up the upper body in response to a certain degree of physical function.

Further, according to the vehicle boarding / alighting assistance device,
When it is detected that the occupant in the rear seat has finished getting off, the middle angle of the upper part of the seat back is set as the occupant posture angle of the front seat.Therefore, when the upper part of the seat back of the front seat is driven to assist the unloading of the rear seat. Even in this case, the seat back upper position can be set to an appropriate position again for the passenger in the front seat after the exit of the rear seat is completed.

Furthermore, according to this vehicle entry / exit assist device, when the start of boarding of the rear seat is detected, the upper portion of the seat back is tilted backward to the rear seat side. Also, the operation of supporting the upper body of the occupant can be assisted.

Furthermore, according to this vehicle loading / unloading assisting device, after detecting the completion of the occupant in the rear seat and the completion of the occupant in the rear seat, the bending angle of the upper part of the seat back is set to the occupant posture of the front seat. Since the angle is set to an angle, even if the upper seat back of the front seat is driven to assist the getting-off and getting-on motion, the seat back upper part suitable for the occupant of the front seat is again suitable after the getting-on / off of the rear seat is completed. Can be position.

The above-mentioned embodiment is an example of the present invention. For this reason, the present invention is not limited to the above-described embodiment, and other than this embodiment, as long as it does not deviate from the technical idea of the present invention, various types according to the design etc. Of course, it is possible to change.

That is, in the above-described embodiment, the occupant sitting on the front seat is informed by voice that the upper part of the seat back is operating, but the present invention is not limited to this.
The same effect may be obtained by displaying a screen on a display or the like arranged in a position visible from the front seat to notify that the upper part of the seat back is operating, or by notifying by an indicator display or the like. be able to.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a vehicle boarding / alighting assistance device to which the present invention is applied.

FIG. 2 is a diagram showing a boarding / alighting judgment table for judging a passenger's boarding / alighting operation.

FIG. 3 is a flowchart showing a processing procedure of a boarding / alighting assist operation by a vehicle boarding / alighting assisting apparatus to which the present invention is applied.

FIG. 4 is a flowchart showing a processing procedure when the front seat folding control unit is driven by the front seat folding drive control unit.

FIG. 5 is a timing chart showing the operation of each part of the vehicle boarding / alighting assistance device when the occupant gets off the rear seat and gets on the vehicle again.

FIG. 6 is a state transition diagram when an occupant dismounts from a state in which he / she is seated in a rear seat.

FIG. 7 is a state transition diagram when an occupant gets on a vehicle and sits on a rear seat.

[Explanation of symbols]

1 Rear seat door handle open / close detection sensor 2 Rear seat exterior door handle open / close detection sensor 3 Seat cushion load detection sensor on the rear door side 4 Rear seat door open / close detection unit 5 Seat cushion load detector on the rear door side 6 boarding and alighting judgment section 7 Front seat seat slide detection sensor 8 Recliner status detection sensor 9 Front seat folding drive 10 Front seat middle broken state detection sensor 11 Front seat back upper load detection sensor 12 Front seat upper end load detection sensor 13 Front seat folding control unit 14 Front seat back upper load detection part 15 Front seat back top load detection unit 16 Voice message provider 17 Voice message controller 18 Front seat seat back status storage section 19 Front seat seat back drive judgment unit 21 Upper seat back 22 crew 23 rear seats

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Akinari Hirao             Nissan, Takaracho, Kanagawa-ku, Yokohama-shi, Kanagawa Nissan             Inside the automobile corporation F-term (reference) 3B084 EB05                 3B087 BD01 CE10 DE08                 3B099 AA06 BA04 CB01 CB06

Claims (5)

[Claims] 1. A seat back provided on a front seat of a vehicle, the upper part and the lower part of which are connected by a center folding drive mechanism, and the occupant of the rear seat of the vehicle detects that the upper part of the seat back is gripped. Detecting means, driving means for driving the center folding drive mechanism to perform center folding operation on the upper portion of the seat back, and detecting the start of getting off the occupant of the rear seat to tilt the upper portion of the seat back to the rear seat side. The driving means so as to control the driving means so as to drive the upper portion of the seat back in the upright direction after detecting that the occupant of the rear seat grips the upper portion of the seat back by the detecting means. And a drive control means for operating the vehicle. 2. The drive control means controls the driving force of the center folding driving mechanism when driving the upper portion of the seat back in the upright direction, and adjusts the center folding angle of the upper portion of the seat back to raise the seat. The vehicle boarding / alighting assistance device according to claim 1, wherein 3. The drive control means controls the drive means so that the middle bending angle of the seat back upper portion is set to the occupant posture angle of the front seat after detecting that the occupant of the rear seat has finished getting off. The boarding / alighting assistance device for a vehicle according to claim 1. 4. The drive control means detects the start of riding in a rear seat and controls the drive means so as to tilt the upper part of the seat back toward the rear seat. The boarding / alighting assistance device for a vehicle. 5. The drive control means sets the middle folding angle of the seat back upper portion to be the occupant posture angle of the front seat after detecting the completion of the occupant of the rear seat and the completion of the occupant of the rear seat. The vehicle boarding / alighting assistance device according to claim 1, wherein the drive means is controlled.