JPH0948265A - Occupant posture adjusting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily obtain a comfortable posture for front view and the like. SOLUTION: According to a comfortable posture factor inputted by a posture factor input means 45 and the target comfort value, a posture degraded quantity computing means 43 computes the total posture degraded quantity which is the sum of the degraded quantity of each comfortable posture factor excluding the inputted comfortable posture factor, and according to the comfortable posture factor and target comfort value, at least one of longitudinal seat position adjusting means 11, 31, 33, seat height adjusting means 7, 9, a seat back face angle adjusting means 27 and seat face angle adjusting means 7, 9 controls to minimize the computed total posture degraded quantity. A comfortable posture can thereby be obtained while suppressing the degradation of each comfortable posture factor excluding the inputted comfortable posture factor.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an occupant posture adjusting device for automatically adjusting a occupant posture by adjusting a seat.

[0002]

2. Description of the Related Art As a conventional occupant posture adjusting device of this type, there is, for example, a device shown in FIG. 20 disclosed in Japanese Patent Laid-Open No. 1-127425.

That is, this occupant posture adjusting device has a seat 103 whose state can be adjusted by a motor 101. When the body shape data input device 105 manually inputs body shape data such as the length of the driver's crotch, the inputted body shape data is input to the CPU 107 and the data read / write device 109. The CPU 107 calculates steering position data based on the input body shape data, and inputs the calculated steering position data to the motor control device 113 via the changeover switch 111. The motor control device 113 determines whether the seat 1
03 is driven. The position of each part of the sheet 103 is detected by the position detection device 115, and the detected position data is fed back to the CPU 107. The CPU 107 compares the input position data with the steering position data, drives the seat 103 via the motor control device 113 until they match, and sets the seat 103 at a predetermined position.

On the other hand, the data read / write device 109 stores the input body shape data in the IC card 117. Therefore, from the next time onward, the IC card will be used as the data read / write device 10.
9, the data read / write device 109 can read the body shape data from the IC card 117 and perform similar control. Furthermore, if the body shape data is input to the IC card 117 in advance, the optimum steering position of the seat can be automatically set only by inserting the IC card 117 into the data read / write device 109.

[0005]

However, since the posture automatically adjusted by the above-described device is one preset for each occupant's body shape data, the front view is particularly ensured during traveling, and a large amount from the seat cushion is required. Even when it is desired to change the posture for various reasons such as reducing thigh contact (hereinafter, referred to as thigh compression force) and making the body easier, the seat 103 remains adjusted to a predetermined optimum steering position. Since I was unable to answer the request.

[0006] One factor, for example, the seat height can be increased manually by an attempt to improve the front field of view, but when the seat is raised, the thighs are pressed against the seat cushion and the compressive force is increased. In some cases, when one factor is attempted to be improved, other factors may be aggravated.

More specifically, taking the improvement of the front field of view as an example, it is possible to prevent the thigh compression force from increasing by improving the front field of view at the seat slide position rather than raising the seat. That is, in order to improve one factor, the seat front-back position adjusting device,
There are a plurality of adjusting devices such as a seat height adjusting device, and it is necessary to select and actuate the other adjusting device, for example, the adjusting device that minimizes the deterioration of the thigh compression force. However, it is extremely difficult for the driver to select and adjust an optimum adjusting device in consideration of deterioration of other factors during driving.

Therefore, an object of the present invention is to provide an occupant posture adjusting device capable of improving the posture by a simple operation without making factors other than the factor to be improved worsen as much as possible.

[0009]

In order to solve the above-mentioned problems, the invention of claim 1 is directed to a seat front-rear position adjusting means for changing the front-rear position of an automobile seat, a seat height adjusting means for changing the same height, The backrest surface angle adjusting means for changing the backrest surface angle, the seat surface angle adjusting means for changing the seat surface angle, and the occupant selecting at least one or more comfort posture factors from a plurality of comfort posture factors. Attitude factor input means for inputting a comfort target value, and according to the comfortable posture factor and the comfort target value input by the attitude factor input means,
Posture deterioration amount calculation means for calculating a total posture deterioration amount which is a sum of deterioration amounts of the respective comfortable posture factors other than the input comfortable posture factors, and the comfortable posture so that the calculated total posture deterioration amount is minimized. A control means for controlling at least one of the adjusting means in accordance with a factor and a comfort target value.

According to the first aspect of the invention, the occupant can select at least one or more comfortable posture factors, for example, factors such as forward visibility, by the posture factor input means, and input the comfort target value. The posture deterioration amount calculation means calculates a total posture deterioration amount which is the sum of the deterioration amounts of the respective comfortable posture factors other than the comfortable posture factor selected according to the input comfortable posture factor and the comfort target value. The control means can control at least one of the adjusting means so that the calculated total posture deterioration amount is minimized, and use the selected comfortable posture factor as the comfort target value.

According to a second aspect of the invention, a seat front-rear position adjusting means for changing the front-rear position of the vehicle seat, a seat height adjusting means for changing the same height, and a backrest surface angle adjusting means for changing the backrest surface angle, And a seating surface angle adjusting means for changing the seating surface angle, a posture factor inputting means for the occupant to select at least one or more comfort posture factors from a plurality of comfort posture factors, and input a comfort target value thereof, A total posture deterioration amount, which is the sum of the deterioration amounts of the respective comfortable posture factors other than the input comfortable posture factors, is adjusted for each adjusting device according to the comfortable posture factors and the comfort target value input by the posture factor input device. Posture deterioration amount calculation means for calculating, and selection means for selecting an adjusting means that minimizes the calculated total posture deterioration amount,
And a control means for controlling the selected adjusting means according to the input comfortable posture factor and comfortable target value.

According to the second aspect of the present invention, the occupant selects at least one of the plurality of comfortable posture factors by the posture factor input means.
It is possible to select one or more comfort posture factors and input the comfort target value. Then, the posture deterioration amount calculation means calculates the total posture deterioration amount that is the sum of the deterioration amounts of the respective comfortable posture factors other than the comfortable posture factor selected for each adjusting means according to the input comfortable posture factor and the comfort target value. calculate. Next, the selecting means selects the adjusting means that minimizes the calculated total posture deterioration amount. The control means can control the selected adjusting means so that the comfort posture factor becomes the comfort target value.

According to a third aspect of the present invention, there is provided the occupant posture adjusting device according to the first or second aspect, wherein the plurality of comfortable posture factors are at least a factor of forward visibility, a factor of comfort of posture maintenance, and an indoor space. It is characterized by including a factor of a sense of spaciousness.

According to the third aspect of the present invention, in addition to the operation of the first or second aspect of the invention, as a comfortable posture factor, at least a factor of forward visibility, a factor of comfort of posture maintenance, and a factor of a feeling of spaciousness of the indoor space are comprehensive. The comfort posture factor can be set to the comfort target value so that the posture deterioration amount is minimized.

A fourth aspect of the invention is the occupant posture adjusting device according to any one of the first to third aspects, wherein the posture deterioration amount calculating means stores in advance the deterioration amounts of the respective comfortable posture factors. It is characterized in that it is calculated from each comfortable posture factor and the increasing / decreasing relationship of each adjusting means.

According to the invention of claim 4, in addition to the operation of any one of claims 1 to 3, the posture deterioration amount calculation means calculates the deterioration amount of each comfortable posture factor for each comfort posture factor and each adjustment stored in advance. It is possible to calculate the total posture deterioration amount for each adjusting means by calculating it from the increase / decrease relation of the means.

A fifth aspect of the present invention is the occupant posture adjusting device according to any one of the first to fourth aspects, wherein the occupant is a driver, and the control means controls the position and driving operation of the driver. It is characterized in that the positional relationship with the device is controlled so as to maintain a certain range.

According to the invention of claim 5, in addition to the operation of any one of claims 1 to 4, in controlling the adjusting means by the control means, the positional relationship between the position of the driver and the operation device is within a certain range. Therefore, the positional relationship between the position of the driver and the driving operation device can be maintained while controlling the adjusting means.

According to a sixth aspect of the present invention, there is provided the occupant posture adjusting device according to any one of the first to fifth aspects, wherein the comfort target value is set according to the elapsed time from the time of inputting by the posture factor input means. It is characterized in that target value correcting means for correcting and setting a new comfortable target value is provided.

According to the sixth aspect of the present invention, in addition to the operation of any of the first to fifth aspects, the comfort target value can be corrected according to the elapsed time from the time of input by the posture factor input means.

The invention according to claim 7 is the occupant posture adjusting device according to any one of claims 1 to 6, wherein the posture factor input means selects an item for selecting each comfortable posture factor by the occupant's pressing operation. It is characterized in that it has a display means for displaying, and the comfort target value is inputted by the pressing time of the item.

According to the invention of claim 7, in addition to the operation of any one of the inventions of claims 1 to 6, it is possible to select a comfortable posture factor while looking at the item displayed by the display means, and to set the comfort target value. It is possible to input the item pressing time.

The invention according to claim 8 is the occupant posture adjusting device according to any one of claims 1 to 6, wherein the posture factor input means displays a human body manikin indicating a portion of each comfortable posture factor. It is characterized in that it has display means for selectively displaying the sub-switches according to the pressing of each part, and the comfort target value is inputted by the pressing time of the sub-switches.

According to the invention of claim 8, in addition to the operation of any one of claims 1 to 6, the comfortable posture factor is selected by pressing the portion of the comfortable posture factor indicated by the human body manikin displayed on the display means. can do. Further, a sub switch is displayed on the display means in response to the pressing of each part, and the comfort target value can be input by the pressing time of the sub switch.

[0025]

Embodiments of the present invention will be described below.

(First Embodiment) FIG. 1 shows a first embodiment of the present invention.
1 is a block diagram of an occupant posture adjusting apparatus according to an embodiment including a vehicle seat 1.

The automobile seat 1 has a seat cushion 3
And seat back 5. The seat cushion 3 is supported by the seat slide rail upper 11 by front and rear lifters 7 and 9. The front and rear lifters 7 and 9 include front and rear lifter motors 13 and 15, and front and rear lift arms 17 and 1.
9, the front and rear lifter motors 13 and 15 are supported on the seat slide rail upper 11 side, one end of the front and rear lift arms 17 and 19 is connected to a drive shaft (not shown) of the front and rear lifter motors 13 and 15, and the other end is a seat cushion. It is rotatably supported by three front and rear brackets 21 and 23. When the front and rear lift motors 13 and 15 are simultaneously driven, the vertical height of the seat cushion can be changed, and when they are separately driven, the seat surface angle of the seat cushion 3 can be changed. Therefore, the front and rear lifters 7,
Reference numeral 9 constitutes a seat height adjusting means and a seat surface angle adjusting means.

A seat back support arm 25 is integrally provided at the rear end of the seat slide rail upper 11. The seat back 5 is supported on the seat back support arm 25 via a reclining device 27. The reclining device 27 has a reclining motor 29, and the reclining motor 29 can drive the reclining device 27 to change the longitudinal angle of the seat back 5. Therefore, the reclining device 27 constitutes a backrest surface angle adjusting means for changing the backrest surface angle of the seatback 5.

The seat slide rail upper 11 is supported so as to be movable back and forth with respect to the seat slide rail lower 31, and is driven back and forth by a slide motor 33. Therefore, the seat slide rail upper 11, the seat slide rail lower 31, and the slide motor 33 constitute a seat front-rear position adjusting means for changing the front-rear position of the vehicle seat 1.

The rotation angles of the motors 13, 15, 29 and 33 are detected by rotation angle sensors 35, 37, 39 and 41, respectively, and input to the controller 43. Therefore, each rotation angle sensor 35, 37, 39, 4
The controller 43 can detect the height of the seat cushion 3, the seat surface angle, the backrest surface angle of the seat back 5, and the seat front-rear position by the rotation angle of 1.

A signal from the attitude factor input switch 45 is input to the controller 43. The posture factor input switch 45 is for inputting a comfortable posture factor (described later) and a comfortable target value (described later) of the occupant, and constitutes a posture factor input means.

The controller 43 calculates the sum of the deterioration amounts of the comfortable posture factors other than the selected comfortable posture factor for each adjusting means according to the comfortable posture factor and the comfort target value input by the posture factor input switch 45. A certain total posture deterioration amount is calculated. Further, the adjusting means that minimizes the calculated total posture deterioration amount is selected. Then, the selected adjusting means is controlled according to the input comfortable posture factor and comfortable target value. Therefore, the controller 43 constitutes posture deterioration amount calculation means, selection means, and control means.

The operation signal of the manual command switch 47 is input to the controller 43. The controller 43 is operated by the command from the manual command switch 47.
The respective motors 13, 15, 29, 33 can be driven through the seat cushion 3, the height and seat surface angle of the seat cushion 3, the seat back 5
The seat back surface angle and the front and rear position of the seat 1 can be manually adjusted.

FIG. 2 specifically shows the amount that can be adjusted by driving the motors 13, 15, 29 and 33. That is, the seat height H, the seat cushion angle α, the seat back angle β, and the seat slide position L. The seat height H is based on the height of the point P on the seat cushion 3 on the rear side with respect to the seat slide rail lower 31. The point P is the position where the line segment Q that contacts the seat surface of the seat cushion 3 contacts on the rear side of the seat cushion 3. The seat cushion angle α is an angle formed by a line segment Q and a line segment R passing through the point P and substantially parallel to the vehicle body floor F. The seat back angle β is an angle formed by a line segment T passing through the rotation center of the reclining motor 29 and substantially orthogonal to the vehicle body floor, and a line segment U passing through the rotation center of the reclining motor 29 and substantially parallel to the backrest surface of the seat back 5. is there. In the seat slide position L, the position of the line segment T is a distance from a predetermined front position on the vehicle body floor.

The posture factor input switch 45 is as shown in FIG. That is, the posture factor input switch 45 is
It is composed of a display 51 as a display means arranged on the center console 49 of the vehicle instrument. The display 51 displays item switches A, B, and C that respectively display items for selecting a comfortable posture factor by a pressing operation of an occupant. Here, the comfortable posture factor refers to each body burden felt by an independent sensory organ that is the basis for a person to determine or evaluate a posture. Specifically, it is considered that there are visual sensation, fat, a sensation of crushing muscles, and a muscular load sensation received from the muscular force exerted to maintain the posture when sitting on a seat.
Are roughly divided into three factors including a front view factor, a posture maintaining comfort factor, and a sense of room space (head clearance), and corresponding item switches A, B, and C are provided. Further, the factors of the ease of maintaining the posture further include four factors of the comfort of the trunk, the comfort of the lower limbs, the pressure of the abdomen, and the pressure of the thigh, and the corresponding item switches B1, B2, B
3 and B4 are provided, and item switches for a total of seven parameters are provided. Item switch B is
Easy trunk, lower limbs, abdominal pressure, thigh pressure 4
It changes two parameters at the same time.

The comfort target value is set by pressing one of the item switches A to C and inputting the parameter to be improved by the pressing time (the number of times the switch is pressed), which is the amount of the pressing. The display unit 52 of a bar type is shown.

Here, each parameter will be described more specifically with reference to FIGS.

First, the forward field of view is as shown in FIG.
And the range up to the line of sight W in contact with the engine hood. The compression of the thigh is the amount of compression of the thigh from the seat cushion 3 as shown in FIG. 5, that is, the amount of depression of the seat cushion 3. The comfort of the trunk and lower limbs is the force that must be exerted by a person to maintain that posture, as shown in Figure 6,
Muscle 55 that holds the trunk and muscle 57 that holds the lower limbs
Will be a strain on the The compression of the abdomen is a force that compresses the abdominal cavity 59 sandwiched between the chest and the pelvis as shown in FIG. The head clearance is an overhead space (≈ annoyance) X as shown in Fig. 8.
Is shown.

The controller 43 calculates the total posture deterioration amount which is the sum of the deterioration amounts of the parameters other than the parameters selected according to the input parameter and the desired comfort value, and the calculated total posture deterioration amount is the minimum. The adjusting means is selected, and the selected adjusting means is controlled according to the input parameters and the desired comfort value.

Here, the values of the respective parameters are related to the adjustment amounts of the seat back angle β, the seat slide position L, the seat height H, and the seat cushion angle α, which are the objects to be adjusted, and the front field of view and the compression of the thigh are detected. , 10 and 11 show examples of the comfort of the trunk, respectively. When each adjustment amount changes, there is a parameter whose evaluation value increases, and a parameter whose evaluation value decreases.

FIG. 12 shows whether each adjustment amount should be increased (upward arrow), decreased (downward arrow), or not affected (no mark) in order to increase the evaluation value of each parameter. It is shown collectively as a chart. As is clear from this figure, an actuator is moved to increase the evaluation value of one parameter, and the seat back angle β
There is a parameter whose evaluation value always decreases when the values such as Therefore, if the occupant adjusts the adjusting device individually, the evaluation values of other parameters may be significantly lowered. Therefore, the controller 43 calculates the total posture deterioration amount, which is the sum of the deterioration amounts of the parameters other than the parameters selected for each adjustment device, and selects and adjusts the adjusting means that minimizes the total posture deterioration amount. I am trying.

FIG. 13 shows a chart for selecting the adjusting device by calculating the total posture deterioration amount as a posture deterioration index when the front field of view is input as a parameter, for example. In this figure, parameters that do not change or increase (become better) in the parameter evaluation value are shown in parentheses because they are not necessary for calculation. Also, the amount of deterioration is shown as a negative value. The total posture deterioration amount, which is the sum of the deterioration amounts, is shown as the posture deterioration index at the bottom.
This posture deterioration index is the absolute value of the total of the negative amounts.
Then, the adjustment device is selected by comparing the posture deterioration indexes, extracting the smallest adjustment target that does not adversely affect other parameters, and selecting the adjustment device that adjusts the extracted adjustment target.

Further, each adjusting device has restrictions in terms of mechanism and layout, and the object to be adjusted by the selected adjusting device exceeds the maximum value or the minimum value (max or min value in FIGS. 9 to 11). In this case, the adjustment device selected first is moved to the maximum value or the minimum value, and then the amount of change of the adjustment target by each adjustment device is achieved in order to realize the posture desired by the occupant excluding this selected adjustment device. Then, the posture deterioration index is calculated, and the second moving adjustment device is selected and driven. By repeating this, the posture finally desired by the occupant is realized.

Although the above description can be applied to the passenger seat and the passenger in the rear seat, when the driver is targeted, it should not impair the ease of driving operation. Therefore, the fact that the operability of driving operation devices such as the steering wheel and shift lever does not change is also set as a constraint when changing the posture. The operability of operating devices operated by the upper limbs such as the steering and shift lever is mainly determined by the positional relationship from the shoulder 61 as shown in FIG. 14, and the steering center allowable range 63 and the shift lever allowable range 65 are set respectively. There is. That is, first, the position of the driver's shoulder 61 is estimated from the adjustment position of the adjustment target under the control of each adjustment device, and when operating the selected adjustment device, the position of the shoulder 61 and the positions of the steering wheel 67 and the shift lever 69. When it is predicted that the relationship exceeds the allowable range 63, 65, the operation of the adjusting device is stopped at the limit of the allowable range. Then, similarly to the case where the layout of the adjusting device is restricted, the adjusting device to be moved next is selected and operated.

Next, the control operation of the controller 43 will be described with reference to the flowcharts of FIGS.

First, step S1 to step S in FIG.
The flow of (a) up to 7 shows the selection flow of the adjusting device having the smallest deterioration index. The flow of (B) in steps S8 to S10 is a flow in which the layout restrictions of the adjusting device are taken into consideration. The flow of (C) of step S11 to step S15 is a flow considering the ease of driving operation.

The flow of FIG. 16 is a flow for selecting and controlling the adjusting device to be moved second or later in consideration of the layout restrictions and the ease of driving.
The flow of (d) in step S22 substantially corresponds to the flow of (a) in FIG. 15, and steps S23 to S in FIG.
The flow of (e) of 25 substantially corresponds to the flow of (b) of FIG. 15, and the flow of (f) of steps S26 to S29 substantially corresponds to the flow of (c) of FIG.

First, the flow of selecting the adjusting device shown in FIG. 15A will be described. When the control is started, step S1
At, it is determined whether or not any attitude factor (parameter) is input by the attitude factor input switch 45. If any parameter is input, step S
2, the driver's shoulder position is estimated from the seat slide position, cushion angle, back angle, and seat height. In step S3, the amount of change required for each adjustment target in order to realize the input amount (operation amount) that is the comfortable target value of the operated parameter is shown in FIG. 9 to FIG. 11 between the adjustment target and the parameter evaluation value. Calculated from Step S
In 4, when moving the calculated change amount of the adjustment target, the evaluation amount of the parameter other than the operated parameter is obtained from the relationship between the adjustment target and the evaluation value of the parameter (FIGS. 9 to 11). In step S5, the sum of absolute values (posture deterioration index) of deterioration amounts of parameters other than the input parameters that deteriorate from the current state is calculated for each adjustment device, as shown in FIG. In step S6, the adjusting device with the smallest deterioration index is selected. In step S7, the flag is set to 0.

Next, the flow of (b) considering the constraints on the layout is executed. In step S8, it is determined whether the amount of change in the adjustment target due to the drive of the selected adjustment device is greater than or equal to the maximum value or less than or equal to the minimum value. If it is determined that the value is greater than or equal to the maximum value or less than or equal to the minimum value, it is determined that there is a constraint on layout, and the process proceeds to step S9. In step S9, the adjustment device selected first is operated to maximize or minimize the amount of change in the adjustment target. Next, in step S10, the flag is set to 1 to indicate that the operated adjusting device has operated to the maximum or minimum due to layout restrictions or the like. If it is determined that the amount of change calculated in step S8 is not greater than or equal to the maximum value or less than or equal to the maximum value, it is determined that the adjustment device is not restricted by layout or the like, and the process proceeds to step S11.

Then, the flow (c) considering the ease of driving is executed. In step S11, the shoulder position when the adjustment target is changed by a predetermined amount by the selected adjustment device is estimated. In step S12, it is determined whether or not the positional relationship between the shoulder and the steering wheel and the shoulder and the shift lever is within the allowable range 63, 65 shown in FIG. 14, and if it is determined that the allowable range is exceeded, the process proceeds to step S13. To do. In step S13, the amount of change of the adjustment target by the adjustment device selected so that the positional relationship between the shoulder and the steering wheel and the shoulder and the shift lever is within the allowable limit shown in FIG. 14 is calculated. In step S14, flag = 1 is set to indicate that the allowable limit for ease of driving has been considered, and step S15 is performed.
Move to.

If it is determined in step S12 that the positional relationship between the shoulder and the steering wheel and between the shoulder and the shift lever is within the permissible range even if the adjusting device is operated, the process directly proceeds to step S15. In step S15, the selected adjustment device is activated to set the adjustment target as the calculated change amount. In this case, if the change amount of the adjustment target by the selected adjustment device is not restricted by layout or the like, and is not restricted by the ease of driving, the change amount of the adjustment target in step S15 is calculated in step S3. It is the amount of change made. or,
If there is a constraint on the layout or the like, the change amount is calculated in step S9, and if there is a constraint on ease of driving, the change amount is calculated in step S13.

Then, the process proceeds to step S16 in FIG.
It is determined whether or not the flag = 1. This is to determine whether or not the layout restrictions and the ease of driving are taken into consideration in the flows of (b) and (c) of FIG. Therefore, if it is determined that the flag = 1, the process proceeds to step S17, and the following (d), (e),
The flow is executed in the order of (f). This (d),
The respective flows of (e) and (f) correspond to the flows of (a), (b) and (c) of FIG. 15 as described above,
(D) is a flow for selecting the adjustment device with the smallest deterioration index, (e) is a flow that considers constraints such as layout, and (f) is a flow that considers constraints on ease of driving. is there. Therefore, in correspondence with the flow of FIG. 15, step S17 corresponds to step S2 (S17 =
S2), if the same is taken, S18≈S3, S19 = S
4, S20 = S5, S21 = S6, S22 = S7, S2
3 = S8, S24 = S9, S25 = S10, S26 = S
11, S27 = S12, S28 = S13, S29 = S1
4, S30 = S15.

Note that in step S18, the adjustment target already operated by the adjustment device selected in the flow of FIG. 15 is excluded, so the change amount is calculated by calculating the change amount required for each adjustment target other than the operated adjustment target. I am going to do it.
Then, by the flow of (d) from step S17 to step S22, the adjustment device with the smallest deterioration index is selected. Further, the layout constraint is taken into consideration in the flow of (e) from step S23 to S25, and the constraint of ease of driving is taken into consideration in the flow of (f) from step S26 to S29.

In step S31, it is determined whether or not flag = 1, and if the flag is 1, the process proceeds to step S17, and the third and fourth adjusting devices are selected and controlled by repeating the flow. Also, step S3
If it is determined in 1 that the flag is not 1, the process returns to step S1 of FIG. 15 and the same control as described above is performed.

When the parameters such as the forward field of view and the comfort target value thereof are input by the posture factor input switch 45 as described above, it is the sum of the deterioration amounts of the parameters other than the parameters input according to the relationships of FIGS. 9 to 11. The amount of deterioration in posture is calculated, and the adjustment device with the smallest deterioration is selected. Then, the selected adjusting device is operated to realize the comfortable target value which is the input amount of the parameter, and the adjustment target is operated by the calculated change amount. Also, if there are restrictions on the operation of the adjustment target due to the adjustment of each adjustment device due to layout etc., first activate the selected adjustment device to maximize or minimize the amount of change of the adjustment target, and then calculate the comfortable target value from that posture. In order to realize it, the same control as above is performed, and the adjusting device to be moved second is selected and driven. Then, by repeating this, the posture finally desired by the occupant can be realized. Further, when there is a constraint due to ease of driving, similarly, the adjustment device selected first is operated so that the adjustment target is within the allowable limit, and the same calculation as above is performed to realize the comfortable target value from that posture. Then, select and drive the adjusting device to be moved to the second position.
Then, by repeating this, the posture finally desired by the occupant can be realized. In this way, various comfort postures desired by the occupant can be easily realized only by inputting the parameter that the occupant wants to improve. Moreover, since the input is performed by the posture factor input switch 45, it is extremely simple. Further, when a certain parameter is improved, it can be improved while suppressing adverse effects on other parameters, and an extremely accurate comfortable posture can be realized.

(Second Embodiment) FIGS. 17 and 18 show a second embodiment of the present invention. In this embodiment, the passage of time is taken into consideration for the input of parameters.
That is, when the vehicle travels for a long time, the occupant's feeling of comfortable posture changes due to fatigue of eyes due to fatigue and muscle fatigue of the trunk and lower limb muscles. Therefore, correction is performed in consideration of the degree of fatigue. That is, as shown in FIG. 17, the time coefficient K _t of each parameter such as the front field of view is set, and the time coefficient K _t depends on how much time has passed since the occupant inputs the parameter.
Is calculated, and the input value of the comfort target value of the parameter instructed by the occupant is multiplied by this coefficient K _t to correct the comfort target value of the parameter.

The control of the second embodiment is performed based on the flowchart of FIG. The flow chart of the second embodiment is mostly the same as the flow chart of the first embodiment of FIGS. 15 and 16. That is, steps S1, S2, S3, S4, S5, S6 and S7 of FIG.
This is the same as steps S1 to S7 in the first embodiment.
Further, in FIG. 18, steps after step S8 are omitted, but steps S8 to S in FIGS. 15 and 16 are omitted.
The same thing as 31 is included in the flowchart of the second embodiment of FIG. On the other hand, in the second embodiment, a flow (g) considering the influence of time is inserted between step S1 and step S2.

First, the flowchart of FIG. 18 is executed every predetermined time. When the parameter and the comfort target value are input by operating the posture factor input switch 45 in step S1, the process proceeds to step S41, and time reset T = 0 is performed. This is because the attitude factor input switch 45 has just been operated and it is not necessary to consider the effect of time. Therefore, step S47 is directly passed, and the steps after step S2 are executed in the same manner as in the first embodiment of FIGS. 15 and 16.

Then, the determination in step S1 is performed again by executing the flow at predetermined time intervals. At this time, since the certain time has passed since the posture factor input switch 45 was operated, it is determined in step S1 that the switch has not been operated, and the process proceeds to step S42. In step S42, the time from when the time reset T = 0 is performed to the present is read. Next, in step S43, it is determined whether or not the time T is a multiple of the fixed time T _{int. If} it is determined to be a multiple, the process proceeds to step S47 to consider the time, and the parameters are corrected. This correction is performed by multiplying the input amount of the parameter by the coefficient K _t obtained in FIG. Hereinafter, the flow from step S2 is executed based on the corrected parameter input amount.

In step S43, T is a constant time T
If it is determined that it is not a multiple of _int , it is determined that it is not necessary to consider the influence of time, and the process proceeds to step S44. At step S44, the posture factor input switch 45 is turned on again.
It is determined whether the parameter and the comfort target value have been input by the operation of. If no input has been made, the process returns to step S42 to read the time until now, and the determination in step S43 is made in the same manner as above.

If the posture factor input switch 45 is operated in step S44, the time reset T = 0 is performed again in step S45, and the flow from step S2 onward is executed according to the input parameter and input amount.

As described above, in this embodiment, since the parameters inputted are corrected by the flow in consideration of the influence of (g) time, eye fatigue due to fatigue, trunk and lower limbs, such as when traveling for a long time. A more accurate comfortable posture can be achieved according to the change in the occupant's feeling due to muscle fatigue of the muscles.

Incidentally, the posture factor input switch as the posture factor in each of the above-mentioned embodiments may be constructed as shown in FIG. That is, in this example, the center console 49
On the display 51, the human body mannequin 73 showing the parts of the parameters that are the factors of the comfortable posture is displayed. On the display 51, A to C indicate each item switch. Then, on the display 51, the sub switch 7
5 is displayed. This sub switch 7
5 is provided for each of the item switches A to C, and when each of the item switches A to C is pressed, the corresponding sub switch is selectively displayed in response to this. The sub switch 75 includes a display section 52, a push switch section 77, and an end display section 79.
Is displayed. The input of the comfortable target value is displayed by the number of times the pressing switch 77 is pressed, and when the display 52 reaches the limit, the end display 79 is turned on. Therefore, such a posture factor input switch 7
According to 1, the place to be improved can be visually indicated by the item switch itself, and the input can be performed more easily.

Further, in each of the above-described embodiments, the case where one parameter as the comfortable posture factor is input has been described, but it is also possible to input a plurality of parameters at the same time. When a plurality of parameters are simultaneously input, each parameter is weighted to achieve a comfortable posture without contradiction.

[0065]

As is apparent from the above, according to the first aspect of the invention, it is possible to extremely easily meet the requirements for various comfortable postures of the occupant. Moreover, the comfortable posture factor and the comfort target value can be input by operating the posture factor input means, and various comfort posture requests can be easily met. Further, it is possible to suppress deterioration of the comfortable posture factors other than the input comfortable posture factors, and it is possible to accurately achieve the comfortable posture.

According to the second aspect of the present invention, it is possible to select and control the adjusting means that minimizes the total posture deterioration amount, and it is possible to perform more accurate control.

According to the invention of claim 3, in addition to the effect of the invention of claim 1 or 2, it is possible to control at least a factor of the forward field of view, a factor of comfort of holding the posture, and a factor of a feeling of spaciousness of the indoor space. It is possible to obtain a comfortable posture in order to improve at least the forward field of view, the ease of maintaining the posture, and the feeling of spaciousness of the indoor space.

According to the invention of claim 4, in addition to the effect of the invention of any one of claims 1 to 3, the deterioration amount of each comfortable posture factor is calculated from the previously stored comfortable posture factors and the increase / decrease relation of each adjusting means. It is possible to calculate, an accurate deterioration amount can be calculated for each adjusting means, and more accurate control can be performed.

According to the invention of claim 5, in addition to the effect of any one of the inventions of claims 1 to 4, when the occupant is a driver, the positional relationship between the driver's position and the operation device is within a certain range. It can be controlled so as to keep it, and the ease of driving can be maintained.

According to the invention of claim 6, in addition to the effect of any one of claims 1 to 5, the comfort target value can be corrected according to the elapsed time from the time of input, and when traveling for a long time, etc. Even when the occupant's feeling changes due to eye fatigue due to fatigue, muscle fatigue of the trunk and lower limb muscles, etc., accurate control can be performed in consideration of the influence of time.

According to the invention of claim 7, in addition to the effect of any one of claims 1 to 6, the comfortable posture factor and the comfortable target value can be selected by the pressing operation while observing the item of the display means. Input can be done easily.

According to the invention of claim 8, in addition to the effect of any one of claims 1 to 6, the input of the comfortable posture factor and the comfortable target value can be made accurately while observing the portion displaying the comfortable posture factor of the human body manikin. The comfort target value can be easily input, and the comfort target value can be input by the pressing time of the sub switch, so that the input can be performed more easily.

[Brief description of drawings]

FIG. 1 is a block diagram including a vehicle seat of an occupant posture adjusting apparatus according to a first embodiment of the present invention.

FIG. 2 is a side view of an automobile seat showing an adjustment range by each adjusting means.

FIG. 3 is a front view of a display displaying a posture factor input switch.

FIG. 4 is a schematic side view showing a front field of view as a comfortable posture factor.

FIG. 5 is a schematic side view showing compression of the thigh as a comfortable posture factor.

FIG. 6 is a schematic side view showing the comfort of the trunk and the comfort of the lower limbs as the comfortable posture factors.

FIG. 7 is a schematic side view showing abdominal compression as a comfortable posture factor.

FIG. 8 is a schematic side view showing a head clearance as a comfortable posture factor.

FIG. 9 is a graph showing the relationship between each adjustment target and changes in the evaluation value of the front field of view.

FIG. 10 is a graph showing the relationship between each adjustment target and the evaluation value of thigh compression.

FIG. 11 is a graph showing the relationship between each adjustment target and the evaluation value of the comfort of the trunk.

FIG. 12 is a chart showing the deterioration of each control target with an arrow.

FIG. 13 is a chart showing the posture deterioration index of each adjustment target.

FIG. 14 is a side view showing an allowable range for ease of driving.

FIG. 15 is a flowchart according to the first embodiment.

FIG. 16 is a flowchart according to the first embodiment.

FIG. 17 is a graph showing the relationship between each parameter and the time coefficient.

FIG. 18 is a partial view of a flowchart according to the second embodiment.

FIG. 19 is a front view of a display displaying an attitude factor input switch.

FIG. 20 is a block diagram according to a conventional example.

[Explanation of symbols]

1 Automotive Seat 7 Front Lifter (Seat Height Adjusting Means, Seating Surface Angle Adjusting Means) 9 Rear Lifter (Seat Height Adjusting Means, Seating Surface Angle Adjusting Means) 11 Seat Slide Rail Upper (Seat Front-Back Position Adjusting Means) 27 Reclining Device (backrest surface angle adjusting means) 31 Seat slide rail lower (seat front and rear position adjusting means) 33 Slide motor (seat front and rear position adjusting means) 43 Controller (posture deterioration amount calculating means, selecting means,
Control means) 45 Posture factor input switch (posture factor input means) 51 Display (display means) 71 Posture factor input switch (posture factor input means) 73 Human body mannequin 75 Sub switch

Claims (8)

[Claims] 1. A seat front / rear position adjusting means for changing a front / rear position of an automobile seat, a seat height adjusting means for changing the same height, a backrest surface angle adjusting means for changing a backrest surface angle, and a seat surface angle. And a posture factor input means for selecting at least one comfort posture factor from a plurality of comfort posture factors and inputting a comfort target value thereof, and a posture factor input means Posture deterioration amount calculation means for calculating a total posture deterioration amount, which is the sum of deterioration amounts of the respective comfortable posture factors other than the input comfortable posture factors, according to the comfort posture factors and the comfort target values input as An occupant characterized by comprising: control means for controlling at least one of the adjusting means in accordance with the comfort posture factor and the comfort target value so that the calculated total posture deterioration amount is minimized. Posture adjustment device. 2. A seat front / rear position adjusting means for changing the front / rear position of an automobile seat, a seat height adjusting means for changing the same height, a backrest surface angle adjusting means for changing the backrest surface angle, and a seating surface angle. And a posture factor input means for selecting at least one comfort posture factor from a plurality of comfort posture factors and inputting a comfort target value thereof, and a posture factor input means A posture deterioration amount for calculating the total posture deterioration amount, which is the sum of the deterioration amounts of the comfort posture factors other than the input comfort posture factor, for each adjusting means according to the comfort posture factor and the comfort target value input as Calculating means; selecting means for selecting the adjusting means that minimizes the calculated total posture deterioration amount; and control means for controlling the selected adjusting means according to the input comfortable posture factor and comfortable target value. Occupant attitude adjustment device characterized by comprising a means. 3. The occupant posture adjusting apparatus according to claim 1, wherein the plurality of comfortable posture factors are at least a factor of forward visibility, a factor of comfort of posture retention, and a factor of a feeling of spaciousness of an indoor space. An occupant posture adjusting device comprising: 4. The occupant posture adjusting device according to claim 1, wherein the posture deterioration amount calculation means stores the deterioration amount of each of the comfortable posture factors for each of the comfortable posture factors stored in advance. And an increase / decrease relation of each adjusting means. 5. The occupant posture adjusting apparatus according to claim 1, wherein the occupant is a driver, and the control means has a positional relationship between the position of the driver and a driving operation device. An occupant posture adjusting device, which is controlled so as to maintain a constant range. 6. The occupant posture adjusting device according to claim 1, wherein the comfort target value is corrected in accordance with an elapsed time from the time of input by the posture factor inputting means, and a new comfort is obtained. An occupant posture adjusting device comprising a target value correcting means for setting a target value. 7. The occupant posture adjusting device according to claim 1, wherein the posture factor input means displays a display means for displaying an item for selecting each comfortable posture factor by a pressing operation of the occupant. An occupant posture adjusting apparatus, characterized in that the comfort target value is input by a pressing time of the item. 8. The occupant posture adjusting device according to claim 1, wherein the posture factor input means displays a human body mannequin showing a portion of each comfortable posture factor and presses each portion. And a display means for selectively displaying the sub-switch according to the above, and the comfort target value is input by a pressing time of the sub-switch.