JP2004182150A - Seat device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat device for a vehicle capable of setting an appropriate seat condition and steering condition in accordance with a traveling circumstance of a road for the own vehicle to travel. <P>SOLUTION: The seat device for the vehicle is provided with a tilt telescopic drive control part 112 controlling a tilt angle and telescopic position of a steering wheel, an upper seat back drive control part 109 controlling a tilt angle of an upper seat back, a lower seat back drive control part 106 controlling the inclination angle of a lower seat back, a slide drive control part 103 controlling a slide position of a driver's seat, and a road circumstance information providing means 115 detecting the traveling circumstance for the vehicle. When the road circumstance information providing means 115 detects that the vehicle is traveling on an expressway, the upper seat back, the lower seat back, the seat slide position and the tilt angle and telescopic position of the steering wheel are automatically adjusted to prescribed positions. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a vehicle seat device that adjusts a seat mounted on a vehicle according to a traveling environment.
[0002]
[Prior art]
As a conventional vehicle seat device, as described in Japanese Patent Application Laid-Open No. 9-123924 (hereinafter referred to as Patent Document 1), a driving position such as a seat position suitable for each driver or a mirror angle is stored. A driving position automatic adjustment system for automatically setting these positions when a user gets on a vehicle is known.
[0003]
[Patent Document 1]
JP-A-9-123924
[Problems to be solved by the invention]
However, in the above-described conventional vehicle seat device, it is possible to reproduce a state set by an individual driver, or to provide a driving posture or a view corresponding to a vehicle state or a road condition. When the reclining setting of the seat is changed during driving, no adaptive operation corresponding to this is performed, and as a result, the head and shoulders are lowered rearward and downward by reclining backward, There was a problem that the steering became far.
[0005]
This is the same even when the above-described vehicle seat device is combined with a center-folded seat in which a seat back can be separated into an upper part and a lower part and tiltable. In addition, they do not change the body load according to the driving situation by actively changing the posture while maintaining the driving operability according to the road environment.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a vehicle seat device in which a driver's seat is divided into an upper seat back and a lower seat back that can be independently tilted. It has a tilt mechanism for adjusting the tilt angle of the steering, and a telescopic mechanism for adjusting the telescopic position of the steering, detects a traveling environment in which the vehicle travels, and according to the detected traveling environment, the upper seat back, and The tilt angle of the lower seat back, the sliding position of the seat, the tilt angle of the steering, and the telescopic position are automatically adjusted.
[0007]
【The invention's effect】
In the vehicle seat device of the present invention, the upper seat back, the lower seat back, the tilt angle of the steering wheel, and the telescopic position are automatically adjusted to appropriate positions according to the traveling environment of the road on which the vehicle is traveling. Therefore, the driver can take a suitable posture according to the driving environment, and can reduce fatigue and improve operability.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a vehicle seat device according to one embodiment of the present invention.
[0009]
As shown in FIG. 1, the vehicle seat device 100 includes a seat drive calculation unit 101, a seat drive determination unit 102, a seat slide drive control unit 103, a seat slide state detecting unit 104, a seat slide And a driving unit 105.
[0010]
Also, a lower seat back drive control unit 106, a lower seat back state detection unit 107, a lower seat back drive unit 108, an upper seat back drive control unit 109, an upper seat back state detection unit 110, an upper seat back drive unit Means 111.
[0011]
Further, a tilt / telescopic drive control unit 112, a tilt / telescopic state detecting means 113, a tilt / telescopic drive means 114, a road environment information providing means 115, a map information providing means 116, a vehicle position detecting means 117, , A sheet state storage means 118, and a physique detection means 119.
[0012]
The tilt / telescopic state detecting means 113 detects the tilt angle of the steering and the telescopic position. The tilt / telescopic drive control unit 112 outputs a drive signal for controlling the tilt angle of the steering and the telescopic position to desired positions.
[0013]
The tilt / telescopic drive unit 114 performs drive control based on the drive signal output from the tilt / telescopic drive control unit 112 so that the tilt angle of the steering and the telescopic position are at desired positions.
[0014]
The own vehicle position detection means 117 detects the current position of the own vehicle based on the GPS information. The map information providing means 116 has a map database, and outputs map data of the current position of the vehicle to the road environment information providing means 115 as necessary.
[0015]
The road environment information providing means 115 compares the vehicle position information detected by the vehicle position detecting means 117 with the map data provided by the map information providing means 116, and compares the road environment in which the vehicle is currently traveling. Is detected. Then, it is determined whether the vehicle is currently running on a highway or on a general road other than the highway, and the result of this determination is provided to the seat drive control unit 102.
[0016]
The upper seatback state detecting means 110 detects the state of the upper seatback above the divided seatback. Further, the upper seat back drive control unit 109 outputs a drive signal for controlling the upper seat back to have a desired angle.
[0017]
The upper seat back drive unit 111 adjusts the angle of the upper seat back to a desired angle based on the drive signal output from the upper seat back drive control unit 109.
[0018]
The lower seatback state detecting means 107 detects the state of the lower seatback below the two divided seatbacks. In addition, the lower seat back drive control unit 106 outputs a drive signal for controlling the lower seat back to have a desired angle.
[0019]
The lower seatback driving means 108 adjusts the lower seatback angle to a desired angle based on the driving signal output from the lower seatback driving control unit 106.
[0020]
The seat / slide state detecting means 104 detects a sliding position of the vehicle seat. Further, the seat / slide drive control unit 103 outputs a drive signal for controlling the seat slide position to a desired position.
[0021]
The seat / slide driving unit 105 adjusts the seat slide position to a desired position based on the drive signal output from the seat / slide drive control unit 103.
[0022]
The seat state storage unit 118 stores a seat position, a steering tilt angle, and a telescopic position suitable for a driver (one or more) of the vehicle for each road environment in which the vehicle travels. For example, for the driver A, the seat position, the tilt angle, and the telescopic position when driving on a general road are stored, and the seat position, the tilt angle, and the telescopic position when driving on a highway are stored. Similarly, for the driver B, these respective positions are stored separately while driving on a general road and when driving on a highway.
[0023]
The seat drive calculation unit 101 includes an environment of the own vehicle traveling road provided by the road environment information providing unit 115 (in this case, a road environment of a highway or a general road), and a seat state storage unit. Based on the seat state given by 118, a control signal is generated to control the steering tilt angle, the telescopic position, the positions of the upper seat back, the lower seat back, and the seat sliding position.
[0024]
The seat drive determining unit 102 is connected to the road environment information providing unit 115, the tilt / telescopic drive control unit 112, the upper seat back drive control unit 109, the lower seat back drive control unit 106, and the seat / slide drive control unit 103. The tilt / telescopic drive control unit 112, the upper seat back drive control unit 109, the lower seat back drive control unit 106, and the seat / slide drive are performed based on the control signal output from the seat drive determination unit 102. A control signal is output to the control unit 103.
[0025]
The physique detecting means 119 detects the physique of the driver, obtains the link size of the trunk from the detected physique, and calculates the driver's pelvis and thorax from the link size and the inclination angles of the upper seat back and the lower seat back. The absolute angle of the part is calculated, and the wrist, elbow, and shoulder joint angles are calculated from the shoulder joint point and the steering position of the thorax, and the link size of the upper limb.
[0026]
Next, the operation of the vehicle seat device 100 according to the present embodiment configured as described above will be described with reference to a flowchart shown in FIG. 2, a conceptual diagram of the mechanism operation shown in FIG. This will be described with reference to the drawings.
[0027]
First, at the time of normal boarding, the driver sets in a process of step S20 in FIG. 2 such that the position of various devices related to driving operation such as a seat position or a mirror angle is optimized in driving on a general road. At this time, the driver sets the upper seat back S1 and the lower seat back S2 to be flat (planar) as shown in FIG. That is, the upper seat back S1 and the lower seat back S2 are set so as not to be bent.
[0028]
Next, when the traveling of the vehicle is started, the traveling position of the own vehicle is detected by the own vehicle position detecting means 117, and the road environment information providing means 115 provides the data of the traveling position and the map information providing means 116. By comparing the map data with the corresponding map data, it is detected as road environment information what road the vehicle is traveling on, that is, whether the vehicle is traveling on an expressway or other general roads. I do. Then, the road environment information is output to the seat drive determination unit 102.
[0029]
In the process of step S21, the seat drive determining unit 102 constantly monitors the road environment information, and when the seat drive determining unit 102 detects that the vehicle has entered the main line of the highway, In step S22, the relative positional relationship between the upper seat back S1 and the lower seat back S2 is detected by the lower seat back state detecting means 107 and the upper seat back state detecting means 110. The tilt angle and the telescopic position of the steering are detected by the tilt / telescopic state detecting means 113. These detection results are stored in the seat state storage unit 118 as a set position (second set position) when traveling in the city.
[0030]
Thereafter, in step S23, the state of the seat and the state of the steering are adjusted based on the criteria shown in FIG. In other words, the upper seat back S1 and the lower seat back are set so that the driver's spine is close to a straight line and the position is pre-stored and stored in the seat state storage means 118 for each driver in order to provide a posture with a small load. Adjust the relative positional relationship of S2. Specifically, the driver's entire trunk is tilted backward, the seat slide position is retracted, the seat lifter (not shown) is raised, the steering telescopic position is extended, and the tilt angle is lowered. Control.
[0031]
In this case, since the entire seat back is adjusted so as to have a bent shape (that is, the upper seat back S1 and the lower seat back S2 are adjusted to have a slight angle), the target seat state is changed from the current seat state. The driving amount up to the half-folded shape is calculated by the sheet driving calculation unit 101. The obtained drive amount is output to the upper seat back drive controller 109 and the lower seat back drive controller 106, respectively.
[0032]
In step S24, the upper seat back state detecting means 110 and the lower seat back state detecting means 107 determine that the absolute angle of the upper seat back S1 that determines the posture of the thorax of the driver is maintained at a fixed angle. While detecting the current positions of the respective seat backs S1 and S2, the upper seat back driving unit 111 and the lower seat back driving unit 108 drive the upper seat back S1 and the lower seat back S2.
[0033]
In parallel with this, in step S25, using the slide position detected by the seat / slide state detection means 104, the relationship between the driver's physique and the slide position predetermined according to the vehicle is determined. Calculate your physique.
[0034]
Next, in step S26, the relationship determined in advance according to the vehicle from the physique of the driver, the tilt angle of the steering wheel, the telescopic position, and the states of the upper seat back S1 and the lower seat back S2 by the seat drive calculating unit 101. The joint angles of the driver's wrists, elbows, and shoulders are calculated using the human body link dimensions obtained from the physique based on the formula. Then, the seat drive determining unit 102 calculates the tilt / telescopic drive amount of the steering according to the drive amounts of the upper seat back S1 and the lower seat back S2 so that the three joint angles can be maintained. And outputs it to the tilt / telescopic drive control unit 112.
[0035]
After that, in step S27, the tilt / telescopic mechanism is driven by the tilt / telescopic driving means 114 while the current state is detected by the tilt / telescopic state detecting means 113.
[0036]
If it is determined in step S28 that the process has not been completed, the process from step S21 is repeated.
[0037]
By the above operation, as shown in FIG. 3 (b), the driver takes a posture with a low spinal load by running the main trunk section backward and bringing the lumbar spine closer to a straight line while traveling on the main road section of the highway. This makes it possible to take a driving posture with less fatigue even during long running.
[0038]
At the same time, the posture from the hand to the rib cage is maintained with respect to the initial city running posture, so that the operability of the steering does not change and good operability is obtained even on a highway main road with a small steering angle. be able to.
[0039]
On the other hand, in the process of step S21, when the seat drive determination unit 102 determines that the vehicle has left the main road of the highway at an interchange or the like, based on the determination criterion shown in FIG. The target angles of the upper seat back S1, the lower seat back S2, and the driving amount of the steering tilt / telescope are stored in the seat state storage means 118, that is, the settings created by the driver at the time of boarding are the same as those described above. By driving the upper seat back S1, the lower seat back S2, and the steering in the processing, the vehicle is returned to a driving posture suitable for urban driving (general road). Specifically, the entire trunk of the driver is tilted forward, the sliding position of the seat is advanced, the lifter (not shown) of the seat is lowered, the telescopic position of the steering is shortened, and the tilt angle is increased. Control.
[0040]
By the above-described operation, the driver can return from the driving posture at the time of traveling on the main road of the highway shown in FIG. 3B to the city traveling posture created by the driver shown in FIG. , A good driving posture and steering operability can be obtained.
[0041]
In the above control flow, the upper seat back S1, the lower seat back S2, and the tilt / telescopic drive control units 109, 106, 112 output drive signals to the respective drive units 111, 108, 114 to detect the state. The flow of processing for performing drive control in response to signals from the means 110, 107, and 113 will be described with reference to the flowchart shown in FIG.
[0042]
In step S30, the control unit (106, 109, 112) sets a target value in a state after driving, and outputs a driving signal. At this time, in step S31, the driving means (108, 111, 114) operates, and in step S32, the state detection value of the detection means (107, 110, 113) is driven until it reaches the target value while constantly monitoring in step S32. Things. This flow is common to all the drive control means (106, 109, 112) of the present invention.
[0043]
In this manner, in the vehicle seat device 100 according to the present embodiment, the traveling environment of the vehicle is acquired by the road environment information providing means 115 on which the vehicle is traveling, such as a navigation device, and the traveling environment is acquired in accordance with the traveling environment. Since the inclination angle of the upper seat back S1 and the lower seat back S2, the tilt angle of the steering wheel, and the telescopic position are automatically adjusted, the driver can take a posture suitable for the traveling environment. Further, driving operability according to the traveling environment can be obtained.
[0044]
Further, when the traveling path of the vehicle is in a predetermined environment, for example, when the vehicle is traveling on a highway, the upper seat back S1 and the lower seat back S2 may be folded so that the entire seat back is folded. Is adjusted, so that the driver can take a posture suitable for high-speed driving.
[0045]
Therefore, while maintaining good operability on the main expressway, the lumbar spine shape can be made closer to a straight line to reduce the spinal load, thereby providing a driving posture with less fatigue over a long period of time. Thus, it is possible to provide a posture with good visibility and agile driving operation.
[0046]
Furthermore, the upper seatback S1 is adjusted so that the inclination angle of the upper seat back S1 is the same between the setting when driving on a highway (first setting position) and the setting when driving on a general road (second setting position). The driver can change the seating posture of the seat without discomfort. Therefore, even when the entire seat back is inclined to be in the reclining state, the posture of the driver's head and thorax is kept constant, so that the lumbar vertebral shape is not affected without affecting the driver's view and operability. Is reduced to a straight line to reduce the spinal load, thereby providing a driving posture with less fatigue in long-time driving.
[0047]
Furthermore, since the joint angle of the wrist, elbow, and shoulder of the driver is automatically adjusted so as not to change, the same driving operability can be obtained even when the inclination angles of the seat backs S1, S2 are changed.
[0048]
Also, as the driving environment, the seatback state and the steering state are automatically adjusted between high-speed driving and a general road, so that when driving on a highway, fatigue during long-time driving can be reduced. When the vehicle is traveling on a road, it can be set so that various operations such as a steering operation, a left / right confirmation operation, and a brake operation can be performed promptly.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating a configuration of a vehicle seat device according to an embodiment of the present invention.
FIG. 2 is a flowchart showing a processing operation of the vehicle seat device according to one embodiment of the present invention.
FIGS. 3A and 3B are explanatory diagrams illustrating a state of a seat back, wherein FIG. 3A illustrates a state of traveling on a general road, and FIG.
FIG. 4 is an explanatory diagram showing a setting state of a seat and a steering during traveling on a general road and traveling on a highway main line.
FIG. 5 is a flowchart illustrating a processing operation of each drive unit control.
[Explanation of symbols]
REFERENCE SIGNS LIST 100 Vehicle seat device 101 Seat drive calculation unit 102 Seat drive determination unit 103 Seat / slide drive control unit 104 Seat / slide state detection unit 105 Seat / slide drive unit 106 Lower seatback drive control unit 107 Lower seatback state detection unit 108 Lower seat back drive unit 109 Upper seat back drive control unit 110 Upper seat back state detection unit 111 Upper seat back drive unit 112 Tilt / telescopic drive control unit 113 Tilt / telescopic state detection unit 114 Tilt / telescopic drive unit 115 Road environment information provision Means 116 Map information providing means 117 Own vehicle position detecting means 118 Seat state storing means 119 Physical size detecting means

Claims (6)

In a vehicle seat device in which a driver's seat back is divided into an upper seat back and a lower seat back that can be independently tilted,
The steering device of the vehicle has a tilt mechanism for adjusting a tilt angle of the steering, and a telescopic mechanism for adjusting a telescopic position of the steering,
The traveling environment in which the vehicle travels is detected, and the inclination angle of the upper seat back and the lower seat back, the sliding position of the seat, the tilt angle of the steering, and the telescopic position are automatically adjusted according to the detected traveling environment. A vehicle seat device characterized by the above-mentioned. In a vehicle seat device in which a driver's seat back is divided into an upper seat back and a lower seat back that can be independently tilted,
Tilt / telescopic control means for controlling a tilt angle and a telescopic position of the steering;
Upper seat back control means for controlling an inclination angle of the upper seat back,
Lower seatback control means for controlling the inclination angle of the lower seatback,
Seat slide control means for controlling a slide position of a driver seat,
Road environment information providing means for detecting a traveling environment of the vehicle;
Has,
When the road environment information providing means detects that the vehicle is under a desired driving environment, the upper seat back, the lower seat back, the seat sliding position, the steering tilt angle, and the telescopic position are set to the second position. Automatically adjusts to the setting position of 1,
When it is detected that the vehicle is not in a desired traveling environment, a vehicle seat device automatically adjusts to a second set position. The second set position is set as a position where the upper seat back and the lower seat back have the same inclination angle and the entire seat back has a planar shape,
The said 1st setting position is set as the position where the inclination angle of the said upper seat back and the inclination angle of the said lower seat back differ, and the whole seat back becomes a bending state. The vehicle seat device according to claim 1. The vehicle seat device according to claim 2, wherein the first set position and the second set position are set so that an absolute inclination angle of the upper seat back is the same. Automatic adjustment so that the inclination angle of the upper seat back and the lower seat back, the sliding position of the seat, the tilt angle of the steering, and the telescopic position are different depending on whether the driving environment is a highway or a general road. The vehicle seat device according to any one of claims 1 to 4, wherein: A pelvis of the driver based on the link size of the trunk of the driver detected by the physique detecting means and the inclination angles of the upper seat back and the lower seat back; Part, the absolute angle of the thorax is determined, based on the absolute angle of the pelvis and the thorax, the wrist, elbow and shoulder joint angles of the driver are determined, the joint angle of the wrist, elbow, shoulder changes The vehicle seat device according to any one of claims 1 to 5, wherein a tilt angle and a telescopic position of the steering are adjusted so as not to be performed.

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