JP6654481B2 - Vehicle seat device - Google Patents

Description

  The present invention relates to a vehicle seat device, and realizes a more relaxed posture of an occupant by allowing a displacement amount of relative movement of each part of a seat in an automatic driving state to a wider range than in a manual driving state. The present invention relates to a vehicular seat device.

  The following structure is known as a conventional driving posture adjusting device that appropriately adjusts the driving posture of a driver sitting on a driver seat. As shown in FIG. 6, the driving posture adjustment device 101 includes a mechanism (not shown) for moving the driver's seat 102 in the front-rear direction of the vehicle via a seat rail, and an installation height and a seat surface angle of the seat cushion 103. It has a seat position adjusting mechanism 104 for adjusting, a floor elevating mechanism 107 for elevating and displacing a floor board 106 installed so as to cover an upper surface of a vehicle body floor 105 located at the foot of the driver sitting on the driver's seat 102, and the like. ing.

  Then, after sitting in the driver's seat 102, the driver operates the mechanisms 102, 104, 107 and the like to determine a driving position suitable for himself and manually drives the vehicle (for example, see Patent Document 1). .).

  Further, the following structure is known as a conventional vehicle seat, in which a passenger can relax. As shown in FIG. 7A, a vehicle seat 111 is supported on a floor 112 of the vehicle, and is supported by the seat seat 113 so as to be swingable about a horizontal axis X. A backrest 114 and a headrest 115 that supports the head H of the occupant above the backrest 114 are provided. At the upper end of the backrest 114, a necklace 116 for supporting the occupant's neck N is arranged, and the necklace 116 can be switched between a retracted position and a projected position.

  As shown in FIG. 7B, in a reclining state in which the backrest 114 is laid down, the necklace 116 supports the occupant's neck N or head H by disposing the necklace 116 in the protruding position. Can be. Then, the lumbar portion of the occupant is prevented from rising from the seat portion 113, and the occupant is easily relaxed (for example, see Patent Document 2).

Japanese Patent No. 5233145 JP 2008-194298 A

  As described above with reference to FIG. 6, in the conventional driving posture adjusting device 101, the entire driver's seat 102 moves in the front-rear direction of the vehicle via the seat rail, and the seat cushion 103 is moved through the seat position adjusting mechanism 104. The installation height and seat angle are adjusted. However, the conventional driving posture adjusting device 101 is designed from the viewpoint that a driver determines a driving position suitable for himself / herself and drives the vehicle comfortably and safely. Therefore, when the vehicle is in the automatic driving state, the driver takes a relaxed posture on the driver's seat 102, so that it is difficult to change the posture of the driver's seat 102 to various postures according to the driver's request. There is a problem.

  As described above with reference to FIGS. 7A and 7B, in the conventional vehicle seat 111, a recess 117 is formed at the upper end of the backrest 114 as a configuration of the vehicle seat 111. A necklace 116 is provided in 117. In this structure, it is necessary to add a new structure such as the concave portion 117 and the necklace 116 as the structure of the vehicle seat 111, and there is a problem that the structure becomes complicated and the manufacturing cost increases.

  In addition, the relative movement between the seat seat portion 113, the backrest 114, and the headrest 115 constituting the vehicle seat 111 is not particularly different from the movement of the conventional general seat. There is a problem that it is difficult to change the posture to various postures according to the driver's request.

  Further, also in the vehicle seat 111, the vehicle seat 111 is designed from the viewpoint of realizing safe traveling in the manual driving state, and when the vehicle is in the automatic driving state, the driver can use the vehicle seat 111 on the vehicle seat 111. There is a problem that it is difficult to displace the vehicle seat 111 to various postures in order to take a relaxed posture.

  The present invention has been made in view of the above-described circumstances, and allows a relative movement displacement between respective parts of a seat in an automatic driving state to a wider range than that in a manual driving, thereby allowing the vehicle to travel during a driving operation. It is an object of the present invention to provide a vehicle seat device that realizes a more relaxed posture of an occupant.

The vehicle seat device of the present invention includes a seat having a seat cushion, a seat back, and a headrest, a driving mode detecting unit that detects a manual driving state of the vehicle or an automatic driving state of the vehicle, the seat cushion, the seat back or Control means for displacing the position of the seat by at least two relative movements of the headrest, and an operation switch for operating the relative movement in the manual driving state and the relative movement in the automatic driving state And when the traveling mode detecting means detects the automatic driving state, the control means converts the relative movement in the automatic driving state to the relative movement in the manual driving state. relative to displace to different areas, the control unit, the operation switch is allowed only in the automatic operation state Operation, characterized in that the invalid when the manual operation state.

  Further, in the vehicle seat device of the present invention, the control means allows the relative movement restricted in the manual driving state as the relative movement in the automatic driving state. .

  Further, in the vehicle seat device according to the present invention, the seat has a driver seat, and when the traveling mode detecting unit detects the automatic driving state, the control unit controls the seat cushion in the driver seat. And the relative movement between the seat back and the seat back is allowed until it becomes full flat.

  In the vehicle seat device of the present invention, in the seat having the seat cushion, the seat back, and the headrest, when the traveling mode detecting unit detects the automatic driving state, the control unit sets the relative position between the respective parts constituting the seat. By allowing the amount of displacement of the movement more than in the manual operation state, the seat can be displaced until the occupant can relax more.

  Further, in the vehicle seat device of the present invention, while driving safely while realizing safe traveling by regulating the movement of the seat in the manual driving state, the seat is displaced until the occupant can relax more in the automatic driving state, and A relaxed state of the occupant inside can be realized.

  Further, in the vehicle seat device of the present invention, in the operation switch for operating the movement of the seat, the operation by the operation switch permitted only in the automatic driving state is invalidated in the manual driving state, so that the driver's sudden operation is disabled. Displacement of the eye point and the like are prevented, and safe travel during manual operation is realized.

  Further, in the vehicle seat device of the present invention, the driver's seat is displaced to the full flat state in the automatic driving state, so that the driver can be more relaxed during traveling.

It is a block diagram showing the outline of the vehicular seat device of one embodiment of the present invention. It is a typical side view explaining the driver's seat used for the seat device for vehicles of one embodiment of the present invention. It is a typical (A) side view explaining an example of a movement of a driver's seat used for a seat device for vehicles of one embodiment of the present invention, and a side view of (B). It is a typical (A) side view explaining a modification of movement of a driver's seat used for a vehicular seat device of one embodiment of the present invention, and a side view of (B). It is a flowchart which shows an example of the control operation | movement of the vehicle seat device of one Embodiment of this invention. It is a side view explaining the outline of the conventional driving posture adjustment device. It is (A) perspective view and (B) side view explaining the conventional vehicle seat.

  Hereinafter, a vehicle seat device 1 according to an embodiment of the present invention will be described in detail with reference to the drawings. In the description of one embodiment, the same reference numerals are used for the same members in principle, and the repeated description is omitted.

  FIG. 1 is a block diagram illustrating an outline of a vehicle seat device 1 according to the present embodiment. The vehicle seat device 1 is a device that is mounted on the vehicle 2 and changes the amount of displacement of the position of the seat according to the traveling mode of the vehicle 2.

  As shown in FIG. 1, the vehicle 2 mainly includes a vehicle control device 3, an operation switch 4, a seat drive device 5, an input device 6, an outside environment recognition device 7, a drive device 8, and a steering device 9. And a braking device 10.

  The vehicle control device 3 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like, and executes an electronic control unit (VMS) that executes various calculations for vehicle control. ECU). The vehicle control device 3 can detect the traveling mode of the own vehicle and the traveling state of the own vehicle by performing various calculations and the like based on the information input from the input device 6 and the outside environment recognizing device 7. .

  The operation switch 4 is, for example, a movable bar, and a plurality of the operation switches 4 are provided on a side surface 15 (see FIG. 2) of the driver's seat 11 (see FIG. 2) on the side of the driver's seat door of the seat cushion 12 (see FIG. 2). ing. The operation switch 4 is connected to the vehicle control device 3, and the driver sitting on the driver's seat 11 can operate the operation switch 4 to adjust the attitude of the driver's seat 11. Although details will be described later, the operation range of the driver's seat 11 by the operation switch 4 in the manual driving state is restricted from the viewpoint of safety. However, in the automatic driving state, the operation range of the driver seat 11 by the operation switch 4 is more allowed than in the manual driving state, so that the attitude of the driver seat 11 can be changed to a posture in which the driver can relax more. It becomes possible.

  The seat driving device 5 includes, for example, a driver seat 11 on which a driver sits, a link mechanism for relatively displacing each part constituting the driver seat 11, an electric motor, an electric hydraulic device, and the like. It is a drive mechanism. The seat driving device 5 may be provided not only for the driver's seat 11 but also for a rear seat such as a passenger seat or two rows.

  The input device 6 has a switch such as a push button that can be operated by an occupant, a touch panel, and the like. The input device 6 includes, for example, an engine switch for starting and stopping the engine and an automatic operation switch for starting and ending automatic operation.

  The outside environment recognition device 7 includes a stereo camera, a GPS device, a sensor such as a millimeter wave radar device, a navigation system, and the like that recognize the outside environment of the vehicle 2. For example, a stereo camera can acquire the situation around the vehicle 2, a GPS device can measure the position of the vehicle 2, a sensor can measure the inter-vehicle distance with another vehicle traveling around the vehicle 2, and a navigation system can use a GPS device It is possible to determine whether the vehicle 2 is at a position where the vehicle 2 can be automatically driven in conjunction with the above.

  The driving device 8 has an engine or the like which is a power source for driving the vehicle 2, the steering device 9 has a steering or the like for steering the vehicle 2, and the braking device 10 has a function of decelerating and controlling the vehicle 2. It has a brake to stop.

  The vehicle control device 3 switches between a normal manual operation in which the driver performs a driving operation and an automatic operation in which the vehicle control device 3 automatically drives according to an instruction from the input device 6. At the time of automatic driving, the vehicle control device 3 executes various calculations based on information from the external environment recognition device 7 and the like, and constantly monitors the current running state, the external environment, and the like. Then, the vehicle control device 3 controls the braking device 10, the driving device 8, the steering device 9, and the like, and performs appropriate automatic driving according to the current situation. As described above, the vehicle control device 3 has the automatic driving function, and can automatically perform the driving operation of the vehicle 2.

  FIG. 2 is a schematic side view illustrating the driver's seat 11 of the vehicle according to the present embodiment. FIGS. 3A and 3B illustrate the driver's seat 11 in the automatic driving state according to the present embodiment. FIGS. 4A and 4B are examples of a schematic side view illustrating a state in which the relative movement of each part is displaced, and FIGS. 4A and 4B are diagrams of the driver's seat 11 in the automatic driving state according to the present embodiment. It is a modification of the schematic side view explaining the state where the relative movement of each part was displaced.

  As shown in FIG. 2, the driver's seat 11 includes a seat cushion 12 on which a driver sits, a seat back 13 extending upward from the rear of the seat cushion 12 to support the driver's back surface, and an upper end of the seat back 13. And a headrest 14 to be provided. For example, three movable bars 4 </ b> A, 4 </ b> B, and 4 </ b> C are disposed as operation switches 4 on the side surface 15 of the seat cushion 12 on the driver's door side. Then, the driver slides the movable bars 4A, 4B, 4C by a predetermined amount in a direction in which the respective parts of the driver's seat 11 are to be moved, whereby the driver's seat 11 and the respective parts are moved in that direction. When the driver maintains the sliding state of the movable bars 4A, 4B, and 4C, the driver's seat 11 and each part thereof move in that direction within a movable range.

  The movable bar 4 </ b> A is a switch for moving the seat cushion 12 of the driver seat 11, and is disposed on the side surface 15 of the seat cushion 12, for example, as a bar having a long grip shape in the front-rear direction of the vehicle 2. . In the manual driving state, the driver slides the movable bar 4 </ b> A in the front-rear direction of the vehicle 2, so that the entire driver seat 11 including the seat cushion 12 is moved forward and rearward of the vehicle 2 via the pair of seat rails 16. Move in the direction. The movable bar 4A is also slidable in the vertical direction of the vehicle 2. In this case, the driver slides the movable bar 4A in the vertical direction of the vehicle 2 so that the driver's seat including the seat cushion 12 is provided. The entire seat 11 moves in the vertical direction of the vehicle 2.

  On the other hand, in the automatic driving state, the regulation of the seat operation in the manual driving state is released, and in addition to the operation of the movable bar 4A during the manual driving, for example, the rear end side of the movable bar 4A is moved to the vehicle 2 Can be slid so as to rotate in the vertical direction. Although details will be described later with reference to FIG. 3A, for example, the rear side of the vehicle 2 of the seat cushion 12 moves upward of the vehicle 2 and the seat back 13 inclines to the rear side of the vehicle 2. That is, the relative movement of the seat cushion 12 and the seat back 13 allows the driver seat 11 to be displaced to a fully flat reclining state.

  Note that, in the manual driving state, the sheet operation that can be performed only in the automatic driving state is restricted. However, even when the movement of the movable bar 4A is restricted and the seat operation is restricted, the movable bar 4A moves. The operation of the seat may be restricted by not displacing the driver seat 11 in conjunction with the movement. The same applies to the movable bars 4B and 4C described below.

  The movable bar 4 </ b> B is a switch for moving the seat back 13 of the driver seat 11, and is disposed on the side surface 15 of the seat cushion 12, for example, as a bar having a long grip shape in the vertical direction of the vehicle 2. . In the manual driving state, the driver slides the upper end side of the movable bar 4B so as to rotate in the front-rear direction of the vehicle 2, so that the seat back 13 is fixed to a floor panel or the like of the vehicle body. (Not shown) in the longitudinal direction of the vehicle 2.

  On the other hand, in the automatic driving state, the regulation of the seat operation in the manual driving state is released, and in addition to the operation of the movable bar 4B in the manual driving state, for example, the movable bar 4B is slid in the front-rear direction of the vehicle 2. It becomes possible. Although details will be described later with reference to FIGS. 4A and 4B, for example, the seat back 13 independently moves in the front-rear direction of the vehicle 2 independently of the seat cushion 12. Then, by moving the seat back 13 to the rear side of the vehicle 2, the seat cushion 12 can move alone in the vertical direction of the vehicle 2. In other words, the relative movement of the seat cushion 12 and the seat back 13 causes the driver's seat 11 to be displaced into various positions, thereby realizing a relaxed posture of the driver.

  The movable bar 4 </ b> C is a switch for moving the headrest 14 of the driver seat 11, and is disposed on the side surface 15 of the seat cushion 12, for example, as a bar having a long grip shape in the front-rear direction of the vehicle 2. In the manual driving state, the driver slides the movable bar 4C in the vertical direction of the vehicle 2 so that the headrest 14 is moved through the seat back (not shown) through a slide mechanism (not shown) provided in the seat back 13. 13 slides in the vertical direction of the vehicle 2.

  On the other hand, in the automatic driving state, the regulation of the seat operation in the manual driving state is released, and in addition to the operation of the movable bar 4C in the manual driving state, for example, the upper end of the movable bar 4C is moved to the vehicle 2 Can be slid so as to rotate in the front-rear direction. Although details will be described later with reference to FIG. 3B, for example, the headrest 14 rotates in the front-rear direction of the vehicle 2 with respect to the upper end of the seatback 13. That is, by moving the headrest 14 relative to the seat back 13, the driver's head can be supported in various postures, and a relaxed posture of the driver can be realized.

  First, as shown in FIG. 3A, when the vehicle control device 3 (see FIG. 1) determines that the vehicle 2 is in the automatic driving state, the operation switch 4 (see FIG. 1) and the seat driving device 5 (See FIG. 1) to release the restriction on the seat operation in the manual operation state. The driver slides the rear end side of the movable bar 4A as the operation switch 4 so that the rear end side of the vehicle 2 rotates above the vehicle 2, so that, for example, a pair of seat cushions 12 are provided on the rear side of the vehicle 2 on the rear side. The arranged electric hydraulic cylinder 17 extends upward of the vehicle 2, and the rear side of the vehicle 2 of the seat cushion 12 moves upward of the vehicle 2. At this time, in conjunction with the movement of the seat cushion 12, the seat back 13 inclines toward the rear side of the vehicle 2 and moves relatively until the seat cushion 12 and the seat back 13 are aligned in a row. Eleven full flat reclining states are realized.

  In other words, in the manual driving state, the operation of the seat cushion 12 on the rear side of the vehicle 2, which has been restricted because an appropriate driving position cannot be obtained, such as difficulty in pedal operation and large movement of the eye point, becomes possible, A new relative movement of the seat cushion 12 with respect to the seat back 13 is realized.

  By displacing the driver's seat 11 to the full flat reclining state, the driver can lie down on the driver's seat 11 with the whole body extended, and can rest in a more relaxed posture. I can do it. In addition, the driver's waist can be prevented from rising from the seat cushion 12 and the seat back 13, and the burden on the waist can be significantly reduced, so that a more relaxed state of the driver can be realized.

  As shown in FIG. 3 (B), when the driver's seat 11 is in a fully flat reclining state, the driver rotates the upper end side of the movable bar 4C of the vehicle 2 forward and in front of the vehicle 2 so as to rotate the headrest 14. Is pivoted forward of the vehicle 2 and rises. For example, an engagement / disengagement rotation pin (not shown) for rotating the headrest 14 in the front-rear direction of the vehicle 2 is inserted into a slide mechanism (not shown) provided in the seat back 13 for driving the headrest 14. Thus, the turning operation of the headrest 14 is realized.

  In other words, in the manual driving state, the driver's eye point becomes easy to move, so that the restricted rotation operation of the headrest 14 becomes possible, and a new relative movement of the headrest 14 with respect to the seat back 13 is realized.

  Since the driver's head is supported by the headrest 14, the driver lies on the driver's seat 11 in a state of lying on his back, but the head is directed obliquely forward of the vehicle 2. To some extent, it is possible to visually recognize the running state of the vehicle 2 and to respond to an emergency by immediately operating the steering wheel or applying a brake in an emergency.

  Next, as shown in FIG. 4A, when the vehicle control device 3 (see FIG. 1) determines that the vehicle 2 is in the automatic driving state, the operation switch 4 (see FIG. 1) and the seat driving device 5 (see FIG. 1) to release the restriction on the seat operation in the manual operation state. Then, when the driver slides the movable bar 4B as the operation switch 4 forward of the vehicle 2, the seat back 13 moves independently of the seat cushion 12 to the front of the vehicle 2 independently. For example, when the movable bar 4B is operated in the automatic driving state, the connection mechanism (not shown) between the seat cushion 12 and the seat back 13 is released, and only the seat back 13 is connected via the seat rail 16. Can be moved. The seat back 13 is not limited to the case where the seat back 13 is moved in the front-rear direction of the vehicle 2 using the seat rail 16. For example, a seat rail for moving the seat back is provided inside the seat rail 16. May be.

  In other words, in the manual driving state, it becomes impossible to obtain an appropriate driving position such as difficulty in pedal operation and a large movement of the eye point, so that the restricted seat back 13 can be moved forward of the vehicle 2 alone. A new relative movement of the seat back 13 with respect to the seat cushion 12 is realized.

  Then, by moving the seat back 13 to the front side of the vehicle 2 with respect to the seat cushion 12, the driver can sit on the driver's seat 11 with his back straightened. In the manual driving state, in order to take a stable driving position, the driver is likely to be seated to the back of the seat cushion 12 and to be in a stooped posture with a rounded back. However, in the automatic driving state, the driver takes a posture in which the back is straightened while sitting on the driver's seat 11, and a stretching effect is obtained, so that a more relaxed state of the driver is realized.

  Next, as shown in FIG. 4B, the driver slides the movable bar 4B to the rear of the vehicle 2 so that the seat back 13 is independent of the seat cushion 12 and independently behind the vehicle 2. Move to. Thereafter, the driver slides the movable bar 4A above the vehicle 2 so that the seat back 13 is independently moved above the vehicle 2 independently of the seat cushion 12. For example, when the electric hydraulic cylinders 17 and 18 provided at the four corners of the seat cushion 12 extend above the vehicle 2, only the seat cushion 12 moves above the vehicle 2.

  In other words, during manual driving, it becomes difficult to operate the seat cushion 12 and the seat back 13 because an appropriate driving position cannot be obtained, such as difficulty in pedal operation and large movement of the eye point. A new relative movement of the and the seat back 13 with respect to each other is realized.

  By moving the seat cushion 12 upward of the vehicle 2, the driver can sit on the driver's seat 11 with his legs bent at a right angle, as when sitting on a chair. Then, the driver can realize a posture in which the waist position is equal to or higher than the knee position, pressure on the waist is reduced, and the driver can take a posture for preventing back pain, A relaxed state is realized.

  Note that, when the driver slides the movable bar 4A above the vehicle 2, the seat back 13 may be inclined rearward of the vehicle 2 in conjunction with the movement of the seat cushion 12 upward. . In this case, it is possible to prevent the driver's head from being pressed on the ceiling of the vehicle 2 and to reduce the eye point fluctuation, so that the driver can easily grasp the traveling state of the vehicle 2 visually. Become.

  FIG. 5 is a flowchart illustrating an example of a control operation of the vehicle seat device 1 of the present embodiment.

  As shown in FIG. 5, when the driver operates the engine start button of the input device 6 in step S1, the vehicle control device 3 controls the drive device 8 and the like to start the engine and the like, and the driver controls the steering device 9 and the like. The manual operation of the vehicle 2 is started by operating the brake device 10. Next, in step S2, when the driver operates the automatic driving button of the input device 6 in the manual driving state, in step S3, the vehicle control device 3 controls the outside environment recognition device 7 and the outside environment recognition device. Based on the information from 7, various calculations are executed to recognize the current running state, external environment, and the like, and determine whether or not automatic driving can be started.

  If the vehicle control device 3 determines that the automatic driving can be started in YES in step S3, the vehicle control device 3 controls the driving device 8, the steering device 9, and the braking device 10 in step S4, Execute appropriate automatic operation according to the current situation. If it is determined in step S3 that the vehicle control device 3 cannot start the automatic driving, the process returns to step S2, and the vehicle continues to be in the manual driving state, and the driver repeatedly presses the automatic driving button. It is possible to operate.

  Then, after the automatic driving is started, the process proceeds to step S5, in which the vehicle control device 3 controls the operation switch 4 and the seat driving device 5 to enable the operation of the operation switch 4 that can be operated only in the automatic driving state. When the driver operates the operation switch 4 in the automatic driving state, the relative movement of each part of the driver's seat 11 described above with reference to FIGS. A more relaxed state is realized.

  In the present embodiment, the displacement of the relative movement of each part of the seat in the manual driving state and the automatic driving state using the driver seat 11 of the vehicle 2 has been described. It does not do. For example, in the passenger seat of the vehicle 2, similarly to the above-described driver seat 11, the relative movement of each part of the seat in the manual driving state and the automatic driving state may be realized. Further, also in the rear seat, a case where the amount of relative movement displacement of each part of the seat is further allowed in the automatic driving state than in the manual driving state may be acceptable. In addition, various changes can be made without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 Vehicle seat device 2 Vehicle 3 Vehicle control device 4 Operation switch 5 Seat drive device 6 Input device 7 Outside environment recognition device 8 Drive device 9 Steering device 10 Braking device 11 Driver seat 12 Seat cushion 13 Seat back 14 Headrest 16 Seat rail

Claims (3)

A seat having a seat cushion, a seat back and a headrest;
Traveling mode detecting means for detecting a manual driving state of the vehicle or an automatic driving state of the vehicle,
Control means for displacing the position of the seat by at least two relative movements of the seat cushion, the seat back or the headrest;
An operation switch for operating the relative movement in the manual driving state and the relative movement in the automatic driving state ,
When the traveling mode detecting means detects the automatic driving state, the control means sets the relative movement in the automatic driving state to an area different from the relative movement in the manual driving state. Displace ,
The vehicle seat device according to claim 1, wherein the control unit invalidates an operation by the operation switch that is permitted only in the automatic driving state in the manual driving state .   2. The vehicle seat device according to claim 1, wherein the control unit allows the relative movement restricted in the manual driving state as the relative movement in the automatic driving state. 3. The seat has a driver seat,
When the traveling mode detection means detects the automatic driving state, the control means allows the relative movement between the seat cushion and the seat back in the driver's seat until the relative movement becomes full flat. The vehicle seat device according to claim 1 or 2 , wherein

Images