JP2005313661A - Seat for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat for a vehicle capable of suitably enhancing getting on/off property in response to difference of physique of an occupant in the seat for the vehicle provided with height adjustment function and getting on/off assistance function. <P>SOLUTION: The seat for the vehicle is provided with a height adjustment mechanism 30 for adjusting height of a seat body (seat cushion 51); and an inclination mechanism 10 for inclining the seat body (upper frame 31) to assist getting on/off of the occupant. An inclination angle of the seat body by the inclination mechanism 10 is changed in response to the height of the seat body adjusted by the height adjustment mechanism 30. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vehicle seat device having a height adjustment function and a boarding / alighting support function.

  2. Description of the Related Art Conventionally, a vehicle seat device that has a function of assisting an occupant posture during vehicle travel has been proposed. For example, Patent Document 1 proposes assisting the occupant posture by tilting the seat body in a direction opposite to the direction of the acceleration in order to support the occupant's body against the lateral acceleration that occurs during cornering. ing.

  However, since such a function is intended to assist the occupant posture, depending on the arrangement of the mounting parts for the function, the passenger is prevented from getting on and off, and lacks practicality.

On the other hand, Patent Document 2 proposes that the seat body (seat surface) is inclined to the door side in order to improve the passengers' ability to get on and off.
JP-A-8-58453 JP 2001-149166 A

  Incidentally, a vehicle seat device having a seat body (seat surface) height adjustment function is also well known. This height adjustment function is for adjusting and setting the seating position according to the occupant's physique.

  Therefore, when the above-mentioned boarding / alighting support is uniformly applied to a vehicle seat device having such a height adjustment function, one side of the vehicle seat device may rise or fall as the seat body tilts. However, depending on the physique of the occupant, getting on and off will be impaired.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle seat device that can suitably improve boarding / exiting performance in accordance with a physique difference in an occupant in a vehicle seat device having a height adjustment function and a boarding / alighting support function. .

  In order to solve the above problems, the invention according to claim 1 is a vehicle including a height adjusting means for adjusting the height of the seat body and a boarding / alighting support means for assisting passengers to get on and off by inclining the seat body. The gist of the present invention is that the sheet apparatus further comprises a changing means for changing the inclination angle of the seat body by the boarding / alighting support means according to the height of the seat body adjusted by the height adjusting means.

  According to a second aspect of the present invention, in the vehicle seat device according to the first aspect of the invention, the changing means is configured to incline the seat body by the boarding / alighting support means, and on the side opposite to the boarding / alighting side of the seat body. The gist of the invention is to change the inclination angle of the sheet main body by matching one of the heights with a predetermined height.

  According to a third aspect of the present invention, in the vehicle seat device according to the first or second aspect of the present invention, the vehicle seat device further includes a height detection unit that detects a height of a seat body that is adjusted by the height adjustment unit, and the detection is performed. The gist of the invention is that it includes a prohibiting means for prohibiting the inclination of the seat body by the boarding / alighting support means when the height of the seat body is within a predetermined range on either the upper limit side or the lower limit side.

  As described above in detail, in the invention according to claim 1, the inclination angle of the seat body when assisting the passenger to get on and off is determined according to the height of the seat body adjusted by the height adjusting means. Be changed. Therefore, when the occupant's physique is small and the height of the seat body is adjusted and set higher, for example, by changing the inclination angle of the seat body so that the boarding / lowering side becomes lower (lowers), Can be improved. On the other hand, when the occupant's physique is large and the height of the seat body is originally adjusted and set low, excessive inclination is avoided by changing the inclination angle of the seat body so as to suppress the lowering of the passenger side, for example. Thus, it is possible to improve the boarding / exiting performance of the passenger. As described above, the boarding / exiting ability can be suitably improved according to the physique difference of the occupant.

  In the invention according to claim 2, for example, when the seat body is tilted so as to be lowered (lowered) to assist the passenger in getting on and off, the boarding side of the seat body is adjusted and set. If it coincides with a predetermined height lower than the height, the inclination angle is automatically changed according to the deviation of these heights. In this way, the angle of inclination according to the height of the seat body can be changed very simply by matching the height of either the boarding / alighting side of the seat body or the opposite side of the boarding / alighting side with the predetermined height. It can be carried out.

  According to a third aspect of the present invention, depending on the height of the seat main body adjusted by the height adjusting means, the inclination angle of the seat main body by the boarding / alighting support means may become slight. For example, when the seat body is tilted so that the passenger side gets lower (lowers) and assists passengers in getting on and off, when the occupant's physique is large and the height of the seat body is adjusted sufficiently low (lower limit side) , The inclination angle of the seat body by the boarding / alighting support means becomes small. Thus, in the state where the boarding / alighting support by the inclination of the seat body is not effective, the driving of the boarding / alighting support means can be avoided and the load for the driving can be reduced by prohibiting the inclination of the seat body. be able to.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of a skeletal part of a vehicle seat device mounted on a vehicle such as an automobile, as viewed obliquely from the inside of the vehicle. As shown in FIG. 1, the vehicle seat reclining device includes an inclination mechanism 10 that constitutes a boarding / alighting support means, a height adjustment mechanism 30 that constitutes a height adjustment means, and a seat body 50 (see FIG. 3). And a seat cushion 51 forming a seating surface.

  The tilt mechanism 10 includes a lower frame 11, a sector gear 12, a bell crank 13, a coil spring 14, a hollow bar 15, a bracket 16, a torsion coil spring supported at a fixed height with respect to the vehicle floor. 17, a link 18, a rotating shaft 19, an electric motor 20 with a reduction gear, a pinion 21, and an idle gear 22. The sector gear 12, bell crank 13, coil spring 14, bracket 16, torsion coil spring 17, link 18 and pinion 21 are provided in pairs in the width direction.

  The lower frame 11 is formed in a substantially square frame shape, and the sector gears 12 are respectively attached to the inner wall surfaces of the front end portions on both sides in the width direction (the door side which is the entrance / exit side and the vehicle interior which is the opposite side). . These sector gears 12 are rotatably supported by the lower frame 11 by pins 12b in such a manner that their arm portions 12a protrude upward. The bell cranks 13 are respectively attached to the inner wall surfaces of the rear end portions on both sides in the width direction of the lower frame 11. The bell cranks 13 are rotatably supported on the lower frame 11 by pins 13c at the center thereof in such a manner that the first arm portion 13a protrudes downward and the second arm portion 13b protrudes forward.

  On each side in the width direction of the lower frame 11, the arm portion 12a of the sector gear 12 and the first arm portion 13a of the bell crank 13 are connected via the coil spring 14, and a pin 12b of the sector gear 12 is connected. The rotation about the center is transmitted to the bell crank 13 through the coil spring 14.

  The hollow bar 15 is fixed to the lower frame 11 so as to bridge the lower frame 11 in the width direction behind the mounting position of the sector gear 12. The bracket 16 is disposed opposite to each sector gear 12 at both axial ends of the hollow bar 15. These brackets 16 are rotatably supported by the hollow bar 15. The torsion coil spring 17 is wound around the hollow bar 15 on each side of the bracket 16. One end of each of these torsion coil springs 17 is locked to the bracket 16 and the other end 17a extends forward. Further, the bracket 16 is connected to the sector gear 12 via the link 18 on each side in the width direction of the lower frame 11.

  The rotary shaft 19 is arranged in parallel with the hollow bar 15 so as to bridge the lower frame 11 in the width direction between the sector gear 12 and the hollow bar 15. One end and the other end of the rotating shaft 19 are rotatably supported on both sides of the lower frame 11 in the width direction. The rotary shaft 19 is rotationally driven by the electric motor 20 fixed and supported on the hollow bar 15.

  The pinions 21 are fixed to both ends of the rotating shaft 19 in the axial direction. One of these pinions 21 (the pinion 21 on the door side) is directly meshed with the corresponding sector gear 12, and the other (the pinion 21 inside the vehicle) is meshed with the corresponding sector gear 12 via the idle gear 22.

  In this configuration, the lower frame 11 is mounted with the upper frame 31 of the height adjusting mechanism 30. That is, the substantially bottomed rectangular frame-like upper frame 31 disposed above the lower frame 11 is connected to the end portions 17a of the torsion coil springs 17 at the front end portions on both sides in the width direction. Is supported by the second arm portion 13b of the bell crank 13 in a rotatable manner.

  Here, operation | movement of the said inclination mechanism 10 is demonstrated collectively. In FIG. 1, when the electric motor 20 is driven to rotate the rotating shaft 19 counterclockwise, the door-side pinion 21 rotates in the same direction, and the door-side sector gear 12 rotates in the clockwise direction. At this time, the door-side bell crank 13 is rotated backward by being pushed backward by the coil spring 14, and the second arm portion 13b is lowered to lower the door side of the upper frame 31. On the other hand, the rotation of the pinion 21 inside the vehicle in the same direction is transmitted in reverse through the idle gear 22 to rotate the sector gear 12 inside the vehicle counterclockwise. At this time, the bell crank 13 on the inside of the vehicle is pulled clockwise by the coil spring 14 to rotate clockwise, and the second arm portion 13b is raised to raise the inside of the upper frame 31.

  As described above, the tilt mechanism 10 tilts the upper frame 31 so that the door side descends and the vehicle interior rises. It goes without saying that these relations (inclination directions) are reversed by reversing the rotation direction of the rotating shaft 19 by driving the electric motor 20. Further, due to the symmetry of the tilt mechanism 10 in the width direction, the upper frame 31 swings and tilts with respect to the center portion in the width direction.

  Next, the height adjustment mechanism 30 will be described. The height adjusting mechanism 30 includes the upper frame 31, the sector gear 32, the rotating shaft 33, the bell crank 34, the pin 35, the link 36, the swing link 37, the pin 38, and the operation handle 39. , A pinion 40, a driven link 41, and an electric motor 42 with a reduction gear. The bell crank 34, the pin 35, the link 36, the swing link 37 and the pin 38 are provided in pairs in the width direction.

  The sector gear 32 is rotatably supported by a rotating shaft 33 at the front end portion of the upper frame 31 on the door side. The bell cranks 34 are respectively attached to the inner wall surfaces of the rear end portions on both sides in the width direction of the upper frame 31. The bell cranks 34 are rotatably supported on the upper frame 31 by pins 35 at the center thereof in such a manner that the first arm portion 34a extends downward and the second arm portion 34b extends forward. Yes.

  The first arm portion 34a of one of the bell cranks 34 (the door-side bell crank 34) is connected to the sector gear 32 via the link 36, and the other arm (the bell crank 34 on the vehicle interior) is the first arm. The portion 34 a is connected to a driven link 41 fixed to the rotary shaft 33 through the link 36.

  Further, the swing links 37 are respectively attached to the inner wall surfaces on both sides in the width direction of the upper frame 31 in front of the rotating shaft 33. These swing links 37 are rotatably supported on the upper frame 31 by pins 38 in such a manner that the arm portions 37a protrude upward.

  The upper frame 31 is rotatably provided with an operation handle 39 on the door side where the sector gear 32 is disposed. The rotating shaft of the operation handle 39 is connected to a pinion 40 that meshes with the sector gear 32 through a spring coupler mechanism (not shown) having a reverse rotation preventing function. Accordingly, when the operation handle 39 is rotated, the sector gear 32 rotates integrally with the rotation shaft 33 around the pinion 40, and the driven link 41 fixed to the rotation shaft 33 is interlocked with this. Rotate.

  Further, the rotating shaft 33 is rotationally driven by an electric motor 42 fixed to the bottom wall portion of the upper frame 31. Therefore, when the electric motor 42 is driven to rotate the rotating shaft 33, the sector gear 32 and the driven link 41 are integrally rotated in conjunction with the rotation.

  In such a configuration, the seat cushion 51 is mounted on the upper frame 31. That is, the seat cushion 51 disposed above the upper frame 31 is pivotally connected to the arm portion 37a of the swing link 37 at the front end portions on both sides in the width direction, and the seat cushion 51 at the rear end portion. It is rotatably supported by the second arm portion 34b of the bell crank 34.

  The height adjusting mechanism 30 operates except that the sector gear 32 for transmitting the turning operation of the operation handle 39 via the pinion 40 is arranged on one side and the follower link 41 corresponding to this is arranged on the other side. The trajectory is configured to be the same on both sides in the width direction. Therefore, for example, the operations of the links 36 via the sector gear 32 or the follower link 41 accompanying the rotation of the rotating shaft 33 are the same.

  Here, the operation of the height adjusting mechanism 30 will be generally described. In FIG. 1, for example, when the electric motor 42 is driven to rotate the rotating shaft 33 counterclockwise, the sector gear 32 and the driven link 41 rotate in the same direction. At this time, each bell crank 34 is rotated clockwise through the link 36 to raise the second arm portion 34 b and raise the seat cushion 51. Then, the raising of the seat cushion 51 is allowed by the swing of each swing link 37. Needless to say, even if the operation handle 39 is rotated instead of driving the electric motor 42, the operation is performed in accordance with the above.

  As described above, the height adjusting mechanism 30 adjusts and sets the height of the seat cushion 51 on the side where the seat cushion 51 is raised. Needless to say, the height adjusting mechanism 30 adjusts and sets the height of the seat cushion 51 on the side where the seat cushion 51 is lowered by reversing the rotation direction of the rotary shaft 33 by driving the electric motor 42 or the like. Absent.

  Next, the electrical configuration of the vehicle seat device in the present embodiment will be described based on the block diagram of FIG. As shown in the figure, the vehicle seat device includes an electronic control unit 60 that constitutes a changing unit and a prohibiting unit. The electronic control unit 60 is composed of a digital computer, a CPU (Central Processing Unit), a ROM (Read Only Memory) that stores various programs and maps, a RAM (Random Access Memory) that can read and write various types of data, and a non-volatile type. A backup RAM including a memory is provided. The electronic control device 60 includes a courtesy switch 61, a tilt switch 62, a seat height adjustment operation switch 63, an electric motor 20 and a tilt position detection sensor 64 constituting the tilt mechanism 10, and the height adjustment mechanism. 30 is connected to an electric motor 42 and a seat height detection sensor 65 as height detection means.

  The courtesy switch 61 is a switch that is turned on by opening (opening) the vehicle door, and a detection signal (on or off) from the courtesy switch 61 is input to the electronic control unit 60. The electronic control device 60 detects the open / closed state of the vehicle door.

  The tilt switch 62 is a switch for operating the tilt mechanism 10, and the start switch 62a for tilting the upper frame 31 (seat body 50) and the upper frame 31 are returned from the tilted state. And a return switch 62b. When the detection signal (ON or OFF) of the tilt switch 62 is input to the electronic control device 60, the electronic control device 60 detects an operation (tilt or return operation) to the tilt mechanism 10. Yes. The electronic control device 60 drives the electric motor 20 of the tilt mechanism 10 based on the operation of the tilt switch 62 to tilt the upper frame 31 (seat body 50) or return it from the tilted state.

  The seat height adjustment operation switch 63 is a switch for electrically operating the height adjustment mechanism 30, and includes a lift switch 63a for raising the seat cushion 51 (seat body 50), a seat cushion, and the like. And a lowering switch 63b for lowering 51. When the detection signal (ON or OFF) of the seat height adjustment operation switch 63 is input to the electronic control device 60, the electronic control device 60 detects an operation (up or down operation) to the height adjustment mechanism 30. It has come to be. The electronic control device 60 drives the electric motor 42 of the height adjusting mechanism 30 based on the operation of the seat height adjusting operation switch 63 to raise or lower the seat cushion 51 (seat body 50).

  The tilt position detection sensor 64 detects the height Hd of the lower end 51a (see FIG. 4) of the seat cushion 51 on the door side. This height Hd is used for monitoring the inclination angle of the seat cushion 51 (upper frame 31).

  The seat height detection sensor 65 detects the height Hs of the lower end 51a when the height adjustment mechanism 30 adjusts / sets the height of the seat cushion 51 (seat body 50). Needless to say, the height Hs is detected when the seat cushion 51 is not inclined. The height Hs is stored in the backup RAM of the electronic control device 60, and is backed up by a battery even after power supply to the electronic control device 60 is stopped.

  Here, in the vehicle seat device having the above-described configuration, the outline of the passenger support for getting on and off will be described with reference to FIG. In the upper part of FIG. 3, a schematic view of the vehicle 1 on which the seat body 50 is mounted as viewed from the front side is shown separately in operation stages related to getting on and off assistance. Here, the flow of the operation of getting on and off when boarding is illustrated in order from left to right. The flow of getting on and off assistance when getting off the vehicle is generally in the reverse order.

  First, a description will be given of the time of boarding. The occupant P opens the vehicle door 2 on the side of the seat body 50 to be boarded, and operates the start switch 62a of the tilt switch 62 mounted on the vehicle inner panel of the vehicle door 2 ( Push). At this time, the tilt mechanism 10 (electric motor 20) is driven, and the seat body 50 is tilted in a manner described later. Accordingly, the occupant P gets on the seat cushion 51 in such a manner that the occupant P is guided toward the vehicle interior S by the inclination of the seat body 50.

  In this state, when the occupant P operates (pushes) the return switch 62b of the tilt switch 62, the tilt mechanism 10 is driven and the seat body 50 returns from the tilted state. The ride of the passenger P is thus completed.

  On the other hand, when alighting is described, the occupant P opens the vehicle door 2 on the dismounting side and operates (pushes) the start switch 62a of the tilt switch 62. At this time, the tilt mechanism 10 is driven and the seat body 50 is tilted. Accordingly, the occupant P gets off the seat cushion 51 and gets off in such a manner that the occupant P is guided toward the vehicle door 2 by the inclination of the seat body 50.

  In this state, when the occupant P operates (pushes) the return switch 62b of the tilt switch 62, the tilt mechanism 10 is driven and the seat body 50 returns from the tilted state. Thus, the passenger P gets off the vehicle.

  Next, drive control (boarding assistance control) of the tilt mechanism 10 by the electronic control device 60 will be described in detail with reference to FIG. FIG. 4 is an explanatory diagram showing the relationship between the height adjusted and set for the seat body 50 (seat cushion 51) and the inclination angle at the time of getting on / off assistance. In the drawing, the range of the adjustable height of the seat body 50 by the height adjusting mechanism 30 is the height of the lower end 51a of the seat cushion 51, and a predetermined upper limit from a predetermined lower most position H1. The range up to the upmost position H2 is set. The lower most position H1 and the upmost position H2 are set based on a mechanical allowable range by the height adjusting mechanism 30. As described above, the seat height detection sensor 65 detects the height Hs of the lower end 51a of the seat cushion 51.

  An inclination lower limit position Hm that is higher than the lower most position H1 by a predetermined height is set at an intermediate portion between the lower most position H1 and the upmost position H2. Between the lowermost position H1 and the inclination lower limit position Hm is set as a range of the height (Hs) of the lower end 51a of the seat cushion 51 that prohibits the inclination (support for getting on and off) of the seat body 50 by the inclination mechanism 10. That is, the range between the lower most position H1 and the lower limit tilt position Hm is set as a range in which a substantial effect of the boarding / alighting support by the inclination of the seat body 50 cannot be obtained, and is a dead zone of the boarding / alighting support control.

  Here, it is assumed that the start switch 62a of the tilt switch 62 is operated in a state where the seat body 50 (seat cushion 51) is not tilted. At this time, the operation of the start switch 62a is detected by the electronic control unit 60, and the electronic control unit 60 determines whether or not the height Hs is included between the lower most position H1 and the lower tilt limit position Hm. When it is determined that the height Hs is not included between the lowermost position H1 and the lower tilt limit position Hm, the electronic control unit 60 drives the electric motor 20 of the tilt mechanism 10 to drive the door side (boarding / exiting side). The seat body 50 is tilted by lowering the door side until the height Hd detected at (1) coincides with the lowermost position H1. Therefore, the inclination angle θ of the seat body 50 (seat cushion 51) at this time increases as the set height Hs increases, and decreases as it decreases.

  In general, the set height (Hs) of the seat body 50 is adjusted to be higher as the occupant's physique is smaller. Therefore, the seat body is set so that the door side becomes lower (lowers) for a occupant having a smaller physique. 50 is greatly inclined, and boarding / alighting assistance is suitably performed. In addition, a passenger having a large physique is inclined and supported to get on and off the vehicle so that the lowering of the door side of the seat main body 50 that is originally set low is suppressed.

  Further, when it is determined that the height Hs is included between the lower most position H1 and the lower tilt limit position Hm, boarding / alighting support by tilting the seat body 50 is prohibited. Accordingly, even if the seat body 50 is tilted by lowering the door side, it is possible to avoid the execution of boarding / alighting support in which the tilt angle is slight and a substantial effect cannot be obtained.

  Next, drive control (boarding / alighting support control) of the tilt mechanism 10 by the electronic control device 60 will be described based on the flowchart of FIG. This process is repeatedly executed by a scheduled interruption every predetermined time. When the processing shifts to this routine, in S (step) 101, the electronic control unit 60 determines whether or not the vehicle door 2 is open based on the detection signal of the courtesy switch 61. Here, if it is determined that the vehicle door 2 is not open, there is no passenger getting on and off, and the electronic control unit 60 once terminates the subsequent processing. If it is determined that the vehicle door 2 is open, the electronic control unit 60 proceeds to S102 because a passenger is expected to get on and off.

  In S102, the electronic control unit 60 determines whether or not the detection signal of the start switch 62a is on. If it is determined that the detection signal of the start switch 62a is on, the electronic control unit 60 proceeds to S103 and reads the height Hs. Then, in S104, the electronic control unit 60 determines whether or not the height Hs is included in a necessary operation range that requires boarding / exit assistance. This required range of operation is a range in which the inclination (support for getting on and off) of the seat body 50 by the inclination mechanism 10 is not prohibited, that is, a range not included between the lower most position H1 and the inclination lower limit position Hm.

  Here, if it is determined that the height Hs is not included in the required operation range that requires boarding / alighting assistance, the electronic control device 60 temporarily terminates the subsequent processing as it is to prohibit boarding / alighting assistance. If it is determined that the height Hs is included in the necessary operation range that requires boarding / alighting assistance, the electronic control unit 60 proceeds to S105 to provide boarding / alighting assistance. Then, the electronic control unit 60 drives the electric motor 20 of the tilt mechanism 10 to lower the door side, and the electric motor until the door side height Hd is determined to coincide with the lower most position H1 in S106. 20 drive is continued. If it is determined in S106 that the height Hd coincides with the lower most position H1, in S107, the electronic control unit 60 stops driving the electric motor 20 and temporarily ends the subsequent processing. As described above, the inclination angle θ of the sheet main body 50 at this time increases or decreases according to the set height (Hs) of the sheet main body 50.

  On the other hand, when it is determined in S102 that the detection signal of the start switch 62a is OFF, the electronic control unit 60 proceeds to S108 and determines whether or not the detection signal of the return switch 62b is ON. When it is determined that the detection signal of the return switch 62b is off, the electronic control unit 60 temporarily ends the subsequent processing.

  If it is determined in S108 that the detection signal of the return switch 62b is on, the electronic control unit 60 proceeds to S109 and reads the height Hs. In S110, the electronic control unit 60 drives the electric motor 20 of the tilt mechanism 10 to return the seat body 50 from the tilted state, and determines in S111 that the door-side height Hd matches the height Hs. The electric motor 20 is continuously driven until it is done. If it is determined in S111 that the height Hd coincides with the height Hs, in S112, the electronic control unit 60 stops driving the electric motor 20 and ends the subsequent processing.

Thus, the boarding / alighting support according to the height (Hs) of the seat body 50 by the electronic control device 60 is completed.
As described above in detail, according to the present embodiment, the following effects can be obtained.

  (1) In the present embodiment, according to the height of the seat body 50 adjusted by the height adjustment mechanism 30, the inclination angle θ of the seat body 50 when assisting the passenger to get on and off is changed. That is, when the occupant's physique is small and the height of the seat body 50 is adjusted and set higher, the inclination angle θ of the seat body 50 is changed so that the passenger's boarding / exiting side (door side) becomes lower (lowers). This makes it possible to improve the boarding / exiting performance of the occupant. On the other hand, when the occupant's physique is large and the height of the seat main body 50 is originally adjusted and set low, the inclination angle θ of the seat main body 50 is changed so as to suppress the descending on the getting-on / off side. It is possible to improve the boarding / exiting performance of the occupant. As described above, the boarding / exiting ability can be suitably improved according to the physique difference of the occupant.

  (2) In this embodiment, if the height Hd on the boarding / alighting side of the seat body 50 is made to coincide with the predetermined lower most position H1, the inclination angle θ is naturally changed according to the deviation of these heights. Thus, by monitoring only the height Hd on the boarding / alighting side of the seat body 50 and matching this with the lowermost position H1, the inclination angle θ can be changed very easily according to the height of the seat body 50. It can be performed.

  (3) In this embodiment, when the occupant's physique is large and the height (Hs) of the seat body 50 is adjusted and set sufficiently low (when included in the range between the lower most position H1 and the inclination lower limit position Hm). In response to the fact that the boarding / alighting support by the inclination of the seat body 50 is substantially ineffective, the inclination of the seat body 50 is prohibited. For this reason, it is possible to reduce the load for the driving by avoiding the driving of the tilt mechanism 10. Further, even if the seat body 50 is tilted, it is possible to avoid the driver from feeling uncomfortable by driving the tilt mechanism 10 (electric motor 20) in a state where the tilt angle θ is small.

  (4) In the present embodiment, the tilt mechanism 10 is configured so that both sides of the seat main body 50 are equal on the basis of the center part (the center part in the width direction) between the boarding / alighting side (door side) and the opposite side (the vehicle inner side). Displace (up and down) to tilt. Accordingly, the seat body 50 is not extremely displaced and inclined only on one side (the boarding / alighting side or the opposite side) with respect to the adjusted / set height (Hs). Can be increased.

(5) In the present embodiment, the height of the seat body 50 (seat surface) can be adjusted manually or electrically by the height adjusting mechanism 30 according to the physique or preference of the occupant.
In addition, you may change the said embodiment as follows.

  -The mechanical structure of the inclination mechanism 10 in the said embodiment is an example. For example, a configuration may be adopted in which only one of the other side (the vehicle door 2 side) and the opposite side (the vehicle interior S side) of the seat body 50 is displaced (lifted / lowered) and inclined. .

  For example, in the configuration in which only the boarding / alighting side (vehicle door 2 side) of the seat body 50 is lowered and tilted, the height of the seat body 50 is adjusted and set higher according to the above-described embodiment. It is preferable to change the inclination angle θ of the seat body 50 so that (the vehicle door 2 side) becomes lower (lowers). And when providing the dead zone of boarding / alighting support control according to the height (Hs) of the seat body 50, the lower limit side where the height of the seat body 50 is adjusted and set to be sufficiently low according to the above-described embodiment. What is necessary is just to set to the predetermined range.

  On the other hand, in the configuration in which only the opposite side (in-car S side) of the seat body 50 is raised and inclined, the side (in-car S) is adjusted and set to a lower height. It is preferable to change the inclination angle θ of the seat body 50 so that the side) becomes higher (rises). Thereby, when the occupant's physique is large and the height of the seat body 50 is adjusted and set to be lower, the seat body 50 is inclined so that the side opposite to the passenger side (inside the vehicle S) becomes higher (rises). By changing the angle θ, it is possible to improve the passenger's ability to get on and off. In addition, when the occupant's physique is small and the height of the seat body 50 is originally adjusted and set, the inclination angle θ of the seat body 50 is changed so as to suppress the rise on the side opposite to the passenger side (inside the vehicle S). By doing so, it is possible to avoid an excessive inclination and improve the passenger's boarding / exiting performance. And when providing the dead zone of boarding / alighting support control according to the height (Hs) of the seat body 50, the upper limit side (including the upmost position H2) where the height of the seat body 50 is adjusted and set sufficiently high. It may be set to a predetermined range in the vicinity thereof.

  In the embodiment, the inclination angle θ may be changed by mechanically restricting the inclination of the seat body 50 with a stopper or the like. For example, when the height Hd on the boarding / alighting side of the seat body 50 reaches the lower most position H1, mechanically restricting the inclination beyond this, the load (current) of the electric motor 20 increases rapidly. Therefore, the inclination angle θ can be changed by stopping the driving of the inclination mechanism 10 by the electronic control unit 60 based on the load of the electric motor 20.

  In the above-described embodiment, the tilt mechanism 10 and the height adjustment mechanism 30 are provided with height detection sensors (the tilt position detection sensor 64 and the seat height detection sensor 65). The adjusted height Hs may be detected together. This is because the height Hs only needs to be detected when the height adjusting mechanism 30 adjusts and sets the height of the seat body 50 and does not compete with the use of the tilt mechanism 10. Further, the position of the seat body 50 (the lower end 51a of the seat cushion 51 on the vehicle door 2 side) where the height is detected by the tilt position detection sensor 64 is also an example. In short, it is sufficient if the height that varies according to the inclination of the seat body 50 can be detected.

  In the embodiment, the position of the seat body 50 (the lower end 51a of the seat cushion 51) where the height is detected by the seat height detection sensor 65 is an example. In short, what is necessary is that the height of the seat body 50 adjusted and set can be detected.

-In the said embodiment, you may perform judgment (S101) at the time of boarding / alighting based on OFF of an ignition switch in conjunction with a door opening.
In the above-described embodiment, the inclination angle θ is changed by matching the height Hd on the boarding / alighting side of the seat body 50 with the predetermined lowermost position H1. On the other hand, for example, a suitable inclination angle θm is calculated by the electronic control device 60 according to the height (Hs) set by the height adjusting mechanism 30, and the height Hd on the boarding / exiting side of the seat body 50 is calculated by this. The height may correspond to the height corresponding to the inclination angle θm. Alternatively, an angle sensor for directly monitoring the inclination angle θ of the seat main body 50 may be provided so that the inclination angle θ of the seat main body 50 coincides with the calculated inclination angle θm.

In the above-described embodiment, the configuration in which the height adjusting mechanism 30 is disposed and mounted above the tilt mechanism 10 is employed. However, the order of these arrangements may be reversed.
As the vehicle seat device, a function (rolling function) for assisting the occupant posture during vehicle travel by driving control of the tilt mechanism 10 may be mounted.

Next, technical ideas that can be grasped from the above-described embodiment and other examples will be described below together with their effects.
(A) In the vehicle seat device according to any one of claims 1 to 3,
The vehicle seat device characterized in that the boarding / alighting support means swings and tilts the seat body with reference to a central portion between the boarding / alighting side of the seat body and the opposite side of the boarding / alighting side. According to this technical idea, the boarding / alighting support means is configured to uniformly displace (elevate) both sides of the seat body with respect to a center part (a center part in the width direction) between the boarding side and the opposite side of the boarding side. Let it tilt. Therefore, since the seat body does not incline due to extreme displacement of only one side (the boarding / alighting side or the opposite side) with respect to the adjusted / set height, the degree of freedom in arrangement is increased. Can do.

(B) In the vehicle seat device according to any one of claims 1 to 3 and (a) above,
A vehicle seat device comprising a pair of height detecting means for independently detecting the height of the seat body on the boarding side and the side opposite to the boarding side.

The perspective view which shows one Embodiment which concerns on this invention. The block diagram which shows the electric constitution of the same embodiment. The schematic diagram which shows the boarding / alighting support aspect of the embodiment. Explanatory drawing which shows the boarding / alighting support aspect of the embodiment. The flowchart which shows the boarding / alighting support aspect of the embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Inclination mechanism which comprises boarding / alighting support means, 30 ... Height adjustment mechanism which comprises height adjustment means, 50 ... Seat main body, 60 ... Electronic control apparatus which comprises change means and prohibition means, 65 ... Height detection means As seat height detection sensor.

Claims (3)

In a vehicle seat device comprising height adjusting means for adjusting the height of the seat body and boarding / alighting support means for assisting passengers to get on and off by inclining the seat body,
A vehicular seat device comprising: changing means for changing an inclination angle of the seat body by the boarding / alighting support means according to the height of the seat body adjusted by the height adjusting means. The vehicle seat device according to claim 1,
The changing means adjusts the inclination angle of the seat body by matching the height of either the boarding / alighting side of the seat body or the opposite side of the boarding / alighting side with a predetermined height in the inclination of the seat body by the boarding / alighting support means. A vehicular seat device characterized by changing. The vehicle seat device according to claim 1 or 2,
A height detection means for detecting the height of the sheet body adjusted by the height adjustment means;
When the detected height of the seat body falls within a predetermined range on either the upper limit side or the lower limit side, the seat body includes prohibiting means for prohibiting the inclination of the seat body by the boarding / alighting support means. Vehicle seat device.

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