JP2020090181A - Vehicle seat device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat device capable of stabilizing a seat with a simple configuration and improving riding comfort and usability. SOLUTION: A seat device 1 of a vehicle 2 is provided with a seat 3 provided in the vehicle 2 and a seat support unit 4 for supporting the seat 3 with respect to a vehicle body of the vehicle 2, and the seat support unit 4 is a vehicle body. A first actuator 10 that supports the seat 3 so as to be rotatable and fixed in the yaw direction, and a second actuator 11 that supports the seat 3 so that the seat 3 can be rotated and fixed in the roll direction with respect to the vehicle body. A third actuator 12 that supports the seat 3 so as to be rotatable and fixed in the pitch direction is provided. [Selection diagram] Fig. 1

Description

The present invention relates to a seat device provided in a vehicle.

2. Description of the Related Art In a seat device provided in a vehicle for an occupant to sit on, a seat device supported by a vehicle body via a suspension device has been proposed. For example, in Patent Document 1, a seat device is supported via a gimbal suspension device, and the seat surface is maintained horizontal with respect to a vehicle tilt in the front-rear direction or the left-right direction. In addition, in the seat device of Patent Document 1, a sudden movement of the seat device is suppressed by a damper or the like to improve riding comfort.

JP, 2009-527415, A

However, the change in the posture of the vehicle during traveling is not limited to tilting in the front-rear direction (pitch direction) and the left-right direction (roll direction). For example, in the case where the suspension device is a hard vehicle, the vehicle may turn with the vehicle body leaning left and right. In such a case, in the seat device of Patent Document 1, for example, when the steering wheel is finely operated to the left and right, the seat swings to the left and right along with the vehicle body, which may reduce the riding comfort.

On the other hand, a seat that does not have a reclining mechanism such as a full bucket seat is required to be able to adjust the seat even when the vehicle is not running.
There is also a problem that it is difficult to get on and off the seat in a vehicle such as a full bucket seat in which the distance between the steering wheel and the seat back is narrow.
The present invention has been made to solve such problems, and an object of the present invention is to provide a vehicle seat device capable of stabilizing a seat with a simple structure and improving riding comfort and usability.

In order to achieve the above object, a vehicle seat device of the present invention includes a seat provided in a vehicle, and a seat support portion that supports the seat with respect to a vehicle body of the vehicle, and the seat support portion includes: The seat is supported so as to be movable in three directions of a pitch direction, a yaw direction, and a roll direction of the vehicle.
As a result, the seat supporting portion that supports the seat enables the seat to move in three directions of the vehicle pitch direction, yaw direction, and roll direction. Therefore, with a simple configuration, the seat is resistant to vibrations in all directions of the vehicle. The movement of can be suppressed. Further, since the seat supporting portion enables the movement of the seat, it can be used for moving the seat such as reclining.

Preferably, the seat support unit connects the first actuator to the vehicle body so as to be rotatable and fixable in the yaw direction, and connects the seat to the vehicle body so as to be rotatable and fixable in the roll direction. It is preferable to include a second actuator and a third actuator that connects the seat to the vehicle body so as to be rotatable and fixable in the pitch direction.
Accordingly, the seat can be moved and fixed in three directions of the yaw direction, the roll direction, and the pitch direction by the three actuators. Therefore, by operating each actuator, the movement of the seat with respect to the vehicle body is controlled. can do. Further, by fixing these actuators, the seat can be fixed to the vehicle body as in the conventional case.

Preferably, the rotation center axes of the first actuator, the second actuator, and the third actuator may pass through the center of gravity of the seat and the occupant of the standard physique seated on the seat.
As a result, the seat rotates around the center of gravity of the seat and the standard-sized occupant seated on the seat, so that the movement of the occupant can be suppressed when the seat rotates, and the stability of the seat is improved. You can

Also, preferably, the first actuator is arranged below the seat, the second actuator is arranged behind the seat, and the third actuator is arranged on the side of the seat, and the seat supporting portion is provided. Is a first arm that extends rearward and upward from the first actuator and is connected to the second actuator, and a first arm that extends leftward and rightward and laterally from the second actuator to the front of the vehicle and is connected to the third actuator. The second arm may be provided.

Accordingly, the seat supporting portion can be integrally configured with a simple structure.
Further, preferably, a yaw rate sensor for detecting acceleration in the yaw direction of the vehicle, a roll rate sensor for detecting acceleration in the roll direction of the vehicle, a pitch rate sensor for detecting acceleration in the pitch direction of the vehicle, and the yaw rate. The first actuator is operated and controlled based on the detection value of the sensor, the second actuator is operated and controlled based on the detection value of the roll rate sensor, and the third actuator is operated based on the detection value of the pitch rate sensor. A control unit that controls operation of the seat to control the seat in a constant posture may be provided.

As a result, the posture of the seat is controlled based on the acceleration in the yaw direction, the acceleration in the roll direction, and the acceleration in the pitch direction of the vehicle body. Therefore, the seat is automatically controlled to have a constant posture regardless of the movement of the vehicle body. Is possible. Therefore, the riding comfort can be improved by automatically keeping the posture of the seat constant while the vehicle is running.
Preferably, a reclining switch for reclining the seat is provided, and the control unit may control the operation of the third actuator so as to incline the seat backward when a reclining operation is performed by the reclining switch.

Accordingly, the seat can be relined by using the third actuator.

According to the vehicle seat device of the present invention, it is possible to suppress the movement of the seat against vibrations in all directions of the vehicle, and it is possible to stabilize the seat and improve the riding comfort with a simple configuration. . In addition, the seat supporting portion can be used for other functions such as reclining and getting on and off, and the usability of the seat can be improved.

It is a side view showing a schematic structure of a seat device of an embodiment of the present invention. It is a perspective view which shows the structure of the seat support unit in the seat apparatus of this embodiment. It is a block diagram showing composition of a control part of a seat device of an embodiment of the present invention. It is a side view which shows the state of the seat device at the time of pitching traveling. It is a front view showing the state of the seat device at the time of rolling traveling.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a side view showing a schematic configuration of a seat device according to an embodiment of the present invention. FIG. 2 is a perspective view showing the structure of the seat support unit in the seat device of this embodiment.
The seat device 1 according to the embodiment of the present invention is mounted on a vehicle 2 and is used as, for example, a driver's seat on the right side of the vehicle.

As shown in FIG. 1, the seat device 1 of the present embodiment includes a full bucket type seat 3 for a driver's seat and a seat support unit 4 (seat support portion) that supports the seat 3 on a vehicle body.
The seat support unit 4 constitutes a gimbal suspension having three gimbal axes.

The seat support unit 4 includes a first actuator 10, a second actuator 11, a third actuator 12, a first arm 13 and a second arm 14.
The first actuator 10 is arranged below the seat 3 and is mounted on the floor 15 of the vehicle 2. As shown in FIGS. 1 and 2, the first actuator 10 is, for example, a cylindrical electric rotary actuator configured by being divided into an upper portion 10a and a lower portion 10b, and the lower portion 10b is provided around a vertically extending center line. On the other hand, the upper part 10a is rotationally driven. The lower portion 10b is fixed to the floor 15, more specifically, a strength member that supports the floor 15.

The second actuator 11 is arranged behind the seat back 3 a of the seat 3. The second actuator 11 is, for example, a cylindrical electric rotary actuator configured by being divided into a front portion 11a and a rear portion 11b, and the front portion 11a rotates about a center line extending in the front-rear direction with respect to the rear portion 11b. To drive.
The third actuator 12 is provided as a pair adjacent to the left and right sides of the seat back 3a of the seat 3. The third actuator 12 is, for example, a cylindrical electric rotary actuator that is configured by being divided into an inner portion 12a and an outer portion 12b in the left-right direction, and has an inner portion 12a with respect to the outer portion 12b around a center line extending in the left-right direction. Is driven to rotate.

The first arm 13 is an L-shaped arm made of a strength member such as steel. The first arm 13 extends from the upper portion 10 a of the first actuator 10 toward the rear of the vehicle, which is radially outward, bends from the lower position of the second actuator 11 and extends upward, and extends toward the rear portion of the second actuator 11. It is connected to 11b.
The second arm 14 is composed of two L-shaped arms made of a strength member such as steel. The second arm 14 extends radially outward (left-right direction) from the left and right side portions of the front portion 11a of the second actuator 11, bends from the rear position of the third actuator 12 and extends forward, and It is connected to the outside 12b of the actuator 12.

The center axis of the first actuator 10 is substantially coincident with the total center of gravity of the seat 3 and the occupant M when the occupant M of the standard size is seated on the seat 3 in the vehicle front-rear direction and the vehicle left-right direction (vehicle width direction). It is arranged to.
The central axis of the second actuator 11 is arranged such that the total center of gravity of the seat 3 and the occupant M when the occupant M of the standard body size is seated on the seat 3 is substantially coincident with the vertical direction and the vehicle left-right direction. ..

The central axis of the third actuator 12 is arranged such that the total center of gravity of the seat 3 and the occupant M when the occupant M of the standard size is seated on the seat 3 is substantially coincident with the vertical direction and the vehicle front-rear direction. ..
The first actuator 10 is regulated by a stopper or the like so as to be rotatable to the left and right, for example, by 45 degrees from the position where the first arm 13 extends rearward. The second actuator 11 is regulated by a stopper or the like so as to be rotatable up and down by, for example, 45 degrees from the position where the second arm 14 extends in the left-right direction. The third actuator 12 is regulated by a stopper or the like so as to be rotatable rearward from a position where the seat back 3a extends in a substantially vertical direction to a substantially horizontal position.

As shown in FIG. 3, the seat device 1 of the present embodiment includes a control unit 20 that controls the first actuator 10, the second actuator 11, and the third actuator 12, respectively.
Further, the vehicle 2 is provided with a yaw rate sensor 21 for detecting the rotational angular acceleration in the yaw direction, a pitch rate sensor 22 for detecting the rotational angular acceleration in the pitch direction, and a roll rate sensor 23 for detecting the rotational angular acceleration in the roll direction. There is.

Further, in the vicinity of the seat 3 of the vehicle 2, a reclining switch 30 for the seat 3, a moving/fixed changeover switch 31 for the seat 3 and a left/right rotation switch 32 for the seat 3 are provided.
The control unit 20 inputs the detection values from the yaw rate sensor 21, the pitch rate sensor 22, and the roll rate sensor 23 and the operation signals of the reclining switch 30, the fixed moving change switch 31, and the left/right rotation switch 32, and the first actuator 10 , And controls the second actuator 11 and the third actuator 12.

FIG. 4 is a side view showing the state of the seat device 1 during pitching travel. FIG. 4A shows the vehicle body leaning forward, and FIG. 4B shows the vehicle body leaning backward. FIG. 5 is a front view showing a state of the seat device 1 during rolling traveling. 5A shows the vehicle body leaning to the left, FIG. 5B shows the vehicle body horizontal to the left, and FIG. 5C shows the vehicle body leaning to the right.
For example, as shown in FIG. 4, when the vehicle body tilts in the front-rear direction due to sudden acceleration/deceleration of the vehicle 2 or traveling on a bad road, the control unit 20 detects the pitch rate sensor 22. Based on the value, the third actuator 12 is operated to control so that the seat cushion 3b of the seat 3 is maintained horizontally. For example, as shown in FIG. 4A, when the vehicle body leans forward and downward, the seat 3 is rotated backward. On the other hand, as shown in FIG. 4(B), when the vehicle body leans rearward and downward, the seat 3 is rotated forward.

Further, for example, as shown in FIG. 5, when the vehicle 2 is suddenly turned or travels on a road surface that is inclined to the left or right, the control unit 20 determines whether the vehicle 2 detects the roll rate sensor 23. , The second actuator 11 is operated to control the seat cushion 3b of the seat 3 to be maintained horizontally. For example, as shown in FIG. 5A, when the vehicle body leans to the lower left, the seat 3 is rotated to the right. On the other hand, as shown in FIG. 5C, when the vehicle body leans to the lower right, the seat 3 is rotated to the left.

The reclining switch 30 of the seat 3 is a momentary switch, and has a forward tilt switch 30a for tilting the seat back 3a forward and a backward tilt switch 30b for tilting the seat back 3a backward. The control unit 20 operates the third actuator 12 so that the seat 3 tilts forward when the forward tilt switch 30a is operated, and controls the third actuator 12 so that the seat 3 tilts backward when the rear tilt switch 30b is operated. The actuator 12 of 3 is operated. Since the seat 3 of the present embodiment is a full bucket type, when the seat 3 is rotated, the seat cushion 3b is also tilted together with the tilt of the seat back 3a.

The moving/fixing changeover switch 31 is a switch for changing over to a moving mode or a fixed mode. When the movement fixing switch 31 is operated in the movement mode, the control unit 20 controls the operation of the actuators 10, 11, 12 based on the detection values of the sensors 21, 22, 23 as described above to control the seat. Maintain 3 in a constant position. On the other hand, when the movement fixing switch 31 is operated in the fixing mode, the control unit 20 fixes the seat cushion 3b in the normal position in which it is parallel to the floor 15 of the vehicle 2.

The left/right rotation switch 32 of the seat 3 has an on/off position switch 32a and a traveling position switch 32b. The control unit 20 operates the first actuator 10 so that the seat 3 faces the right side, that is, toward the door side for getting on and off when the position switch 32a for getting on and off is operated. Further, the control unit 20 operates the first actuator 10 so that the seat 3 faces the front of the vehicle, that is, the normal position when the traveling position switch 32b is operated. The operation of the on/off position switch 32a may be restricted when the vehicle is traveling.

As described above, in the seat device 1 according to the present embodiment, the seat support unit 4 that supports the seat 3 with respect to the vehicle body supports the seat 3 so as to be movable in the pitch direction, the yaw direction, and the roll direction of the vehicle 2. Therefore, with a simple configuration, the movement of the seat 3 can be suppressed against the vibration of the vehicle 2 in all directions. This makes it possible to stabilize the seat 3 with a simple structure and improve the riding comfort.

Further, the seat support unit 4 is configured to connect the seat 3 to the vehicle body so that the seat 3 can be rotated and fixed in the yaw direction, and the seat 3 can be rotated and fixed in the roll direction with respect to the vehicle body. A second actuator 11 for connection and a third actuator 12 for connecting the seat 3 to the vehicle body so as to be rotatable and fixable in the pitch direction are provided, and the seat 3 is operated by the operation of these actuators 10, 11, 12. It is designed to rotate.

As a result, the seat 3 can be moved and fixed in the three directions of the yaw direction, the roll direction, and the pitch direction by the three actuators 10, 11, and 12, so that the actuators 10, 11, and 12 are operated. By doing so, the movement of the seat 3 with respect to the vehicle body can be controlled. Further, the seat 3 can be fixed to the vehicle body as in the conventional case by switching the movement fixing changeover switch 31 to the fixing mode and fixing each actuator 10, 11, 12.

Since the three actuators 10, 11, 12 are controlled based on the detection values of the yaw rate sensor 21, the roll rate sensor 23, and the pitch rate sensor 22 provided in the vehicle 2, the movement of the vehicle body when the vehicle is traveling or the like is prevented. Regardless, the seat 3 can be automatically controlled to have a constant posture. Therefore, the posture of the seat 3 can be automatically made constant during all kinds of vehicle travel, the seat 3 can be stabilized, and the riding comfort can be improved.

Further, since the first actuator 10, the second actuator 11, and the third actuator 12 are arranged so that the central axis of rotation passes through the seat 3 and the center of gravity of the occupant M seated on the seat 3, The seat 3 rotates about the center of gravity of the seat 3 and the occupant M seated on the seat 3, and the movement of the occupant M can be suppressed when the seat 3 rotates. Thereby, the stability of the sheet 3 can be further improved.

The seat support unit 4 that supports the seat 3 is arranged on the left and right sides of the seat 3, the first actuator 10 arranged below the seat 3, the second actuator 11 arranged behind the seat 3. A third actuator 12, a first arm 13 that connects the first actuator 10 and the second actuator 11, and a second arm 14 that connects the second actuator 11 and the left and right third actuators 12 The seat supporting unit 4 can be integrally formed in a simple and small size.

Further, since the third actuator 12 is operated to rotate the seat 3 backward by operating the reclining switch 30, the reclining can be performed using the third actuator 12. Accordingly, the seat device including the electric reclining mechanism can be realized with a simple configuration. In particular, even a full bucket type seat as in this embodiment can be reclined as necessary.

Further, since the first actuator 10 is operated by operating the left/right rotation switch 32 so that the seat 3 faces the door, it is possible to easily get on and off the seat 3.
The present invention is not limited to the above embodiment. For example, the functions of the reclining switch 30, the fixed movement changeover switch 31, and the left/right rotation switch 32 in the above embodiment may be appropriately selected and adopted. Further, in the above embodiment, the seat 3 is a full bucket seat, but the present invention can be widely applied to seats of various vehicles.

1 Seat Device 2 Vehicle 3 Seat 4 Seat Support Unit (Seat Support)
10 1st actuator 11 2nd actuator 12 3rd actuator 13 1st arm 14 2nd arm 20 Control unit 21 Yaw rate sensor 22 Pitch rate sensor 23 Roll rate sensor 30 Reclining switch

Claims (6)

A seat provided on the vehicle,
A seat support portion that supports the seat with respect to the vehicle body of the vehicle,
The seat apparatus for a vehicle, wherein the seat support portion supports the seat so as to be movable in three directions of a pitch direction, a yaw direction, and a roll direction of the vehicle. The seat support portion is
A first actuator that supports the seat so as to be rotatable and fixable in the yaw direction with respect to the vehicle body;
A second actuator that supports the seat so as to be rotatable and fixable in the roll direction with respect to the vehicle body;
A third actuator that supports the seat so as to be rotatable and fixable in the pitch direction with respect to the vehicle body;
The vehicle seat device according to claim 1, further comprising: The rotation center axis of each of the first actuator, the second actuator, and the third actuator passes through the center of gravity of the seat and a standard-sized occupant seated on the seat. The vehicle seat device described. The first actuator is disposed below the seat,
The second actuator is disposed behind the seat,
The third actuator is arranged laterally of the seat,
The seat support portion is
A first arm extending rearward and upward from the first actuator to connect with the second actuator;
4. The vehicle seat device according to claim 3, further comprising a second arm that extends from the second actuator to the left and right sides and to the front of the vehicle and is connected to the third actuator. .. A yaw rate sensor for detecting the acceleration of the vehicle in the yaw direction,
A roll rate sensor for detecting the acceleration in the roll direction of the vehicle,
A pitch rate sensor for detecting the acceleration of the vehicle in the pitch direction,
The first actuator is operated and controlled based on the detection value of the yaw rate sensor, the second actuator is operated and controlled based on the detection value of the roll rate sensor, and the second actuator is operated based on the detection value of the pitch rate sensor. A control unit for controlling the operation of the third actuator to control the seat in a fixed posture;
The vehicle seat device according to any one of claims 2 to 4, further comprising: A reclining switch for reclining the seat,
The vehicle seat apparatus according to claim 5, wherein the control unit actuates and controls the third actuator so as to incline the seat rearward when a reclining operation is performed by the reclining switch.

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