JP2017105343A - Vehicle seat control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat control device which secures a field of view in the vehicle rear direction viewed from the front seat side while being inexpensive and not impairing appearance.SOLUTION: When a shift change is performed in a vehicle 11 to a gear position other than the parking while no occupant is seated in a rear power seat 12 of the vehicle 11, a seat back 14 is made to recline toward the rear direction and the position of a headrest 16 is moved downward. Thus, an obstructed range of a field of view in the vehicle rear direction by the headrest 16 when the vehicle rear direction is viewed from the front seat 30 side for example via an inner mirror 34 becomes smaller and therefore the field of view in the vehicle rear direction can be improved.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle seat control device.

  For example, in Patent Document 1 below, the presence or absence of an occupant seated in a rear seat (hereinafter referred to as “seat occupant”) is detected, and when there is no seated occupant, the headrest of the rear seat is linked to a shift change to the back gear. Has been disclosed (Prior Art 1). And by this prior art 1, the field of view of the vehicle rear side seen from the front seat side can be expanded.

  Patent Document 2 listed below discloses a technique (prior art 2) for displacing the lower end of the seat back downward relative to the backward tilt of the seat back when the rear seat back is erected substantially upright. . And by this prior art 2, the height of the said seat back can be suppressed at the time of standing up of a seat back, and the field of view of the vehicle rear side seen from the front seat side can be expanded.

Japanese Patent No. 2646379 JP 2013-22216 A

  However, in the above prior art 1, a slit for avoiding the movement locus of the stay of the headrest must be provided on the front surface of the seat back, and the appearance is not good.

  Further, in the vehicle seat (vehicle seat control device), the prior art 1 requires a mechanism for moving the headrest forward, and in the prior art 2, the lower end of the seat back is displaced in the vertical direction. A mechanism for making it necessary is necessary. In other words, in these prior arts, a dedicated mechanism is separately provided in the vehicle seat to widen the field of view on the vehicle rear side as seen from the front seat side, which greatly increases the cost of the vehicle seat. End up.

  An object of the present invention is to obtain a vehicle seat control device that can secure the field of view on the rear side of the vehicle as viewed from the front seat side without taking into account the above facts and without impairing the appearance.

  A vehicle seat control device according to a first aspect of the present invention includes: a rear seat side power seat provided with a reclining device for reclining a rear seat side seat back that supports a back portion of a seated occupant; and the rear seat side A rear seat occupant detection device that detects the presence or absence of an occupant in the power seat, and if the occupant is not seated based on a result detected by the rear seat occupant detection device, activates the reclining device, and the rear seat side And a control device for reclining the seat back to a predetermined angle on the rear side in the vehicle front-rear direction.

  In the vehicle seat control device according to the first aspect, the rear seat side power seat includes a reclining device for reclining the rear seat side seat back that supports the back portion of the seated occupant (seat occupant). Further, the vehicle seat control device includes a rear seat occupant detection device that detects the presence or absence of an occupant in the rear seat power seat.

  Here, the control device determines the presence or absence of an occupant in the rear seat power seat based on the result detected by the rear seat occupant detection device. When it is determined by the control device that no occupant is seated on the rear seat side power seat, the reclining device is operated by the control device, and the rear seat side seat back reaches a predetermined angle on the rear side in the vehicle front-rear direction. Reclining. Thereby, the position of the upper end of the rear seat side seat back can be moved downward in the height direction along the vehicle vertical direction.

  That is, the position of the upper end of the rear seat side seat back in the height direction can be lowered. As a result, the range in which the field of view behind the vehicle as viewed from the front seat side is obstructed by the upper end portion of the rear seat side seatback is narrowed, and the field of view behind the vehicle can be improved.

  As described above, since the field of view on the rear side of the vehicle is improved only by reclining the rear seat side seatback to the rear side in the vehicle front-rear direction, the appearance of the rear seat side power seat is not impaired. Further, for example, since a mechanism for moving the rear seat side headrest forward relative to the rear seat side seat back is unnecessary, the present invention can be applied at low cost in the vehicle seat control device.

  In the rear seat side power seat, the rear seat side seat back and the rear seat side headrest that supports the head of the seated occupant are provided integrally, and the rear seat side seat back and the rear seat side headrest May be provided separately as separate members. For this reason, in the “upper end portion of the rear seat side seat back” here, the former case refers to the “upper end portion of the rear seat side seat back”, but in the latter case, "The upper end of".

  As described above, the vehicle seat control device according to the first aspect of the invention is excellent in that it can secure a field of view on the rear side of the vehicle as viewed from the front seat side without impairing the appearance at a low cost. It has the effect.

1 is a schematic cross-sectional side view of a vehicle power seat to which a vehicle seat control device according to the present embodiment is applied as viewed from the inside of the vehicle. In the vehicle power seat to which the vehicle seat control device according to the present embodiment is applied, (A) is a schematic diagram showing a state in which the vehicle rear side is viewed through the inner mirror when the seat back is in the reference state. FIG. 6B is a schematic view showing a state in which the vehicle rear side is viewed through the inner mirror when the seat back is in the reclining state. It is a block diagram which shows the structure of the vehicle seat control apparatus which concerns on this Embodiment. It is a flowchart for demonstrating the effect | action of the vehicle power seat to which the vehicle seat control apparatus which concerns on this Embodiment was applied.

  Hereinafter, a vehicle seat control apparatus according to an embodiment of the present invention will be described with reference to the drawings. It should be noted that arrow FR, arrow UP, arrow RH, and arrow LH, which are appropriately shown in the drawings, respectively indicate the forward direction, the upward direction, and the right side of the vehicle to which the vehicle seat control device according to the embodiment of the present invention is applied. Direction, vehicle left direction. In the present embodiment, the front / rear / left / right / up / down directions of the rear seat-side power seat to which the vehicle seat control device is applied coincide with the front / rear, left / right / up / down directions of the vehicle.

(Configuration of vehicle seat control device)
First, the configuration of the vehicle seat control device according to the present embodiment will be described.

  As shown in FIGS. 1 and 3, a rear seat side power seat (hereinafter referred to as “rear power seat”) 12 to which the vehicle seat control device 10 according to the present embodiment is applied is illustrated. The rear power seat 12 is, for example, a left and right separate type seat, and is applied to the left and right rear power seats 12 in the following description.

  The rear power seat 12 supports a seat cushion (not shown) on which an occupant is seated and a back portion of an occupant seated on the seat cushion (hereinafter referred to as a “seat occupant”) connected to the rear end of the seat cushion. The seat back (rear seat side seat back) 14 is configured. A headrest 16 that supports the head of the seated occupant is connected to the upper end of the seat back 14.

  Further, a support shaft (not shown) is disposed along the vehicle width direction below the seat back 14 of the rear power seat 12, and the seat back 14 is provided to be rotatable around the support shaft. A reclining device 18 is provided on the rear end side of the seat cushion so that the angle of the seat back 14 can be adjusted with respect to the seat cushion.

  Here, in the present embodiment, for example, a rear occupant detection device (rear seat occupant detection device) 20 is disposed on the seat cushion side of the rear power seat 12. The rear occupant detection device 20 is a sensor that detects whether or not an occupant is seated on the rear power seat 12, and the rear occupant detection device 20 and the control device 22 are electrically connected.

  For example, in the rear occupant detection device 20, in the seat cushion of the rear power seat 12, a signal indicating load data applied to the seat cushion by load sensors arranged at a plurality of locations is input to the control device 22. . As a result, the control device 22 determines whether or not an occupant is seated on the rear power seat 12. As described above, in the rear occupant detection device 20, the load sensors are arranged at a plurality of locations of the seat cushion, so that erroneous detection due to luggage is suppressed.

  The control device 22 is electrically connected to a gear position detection device 24 that detects the gear position of the vehicle 11. Thereby, for example, when the gear is shifted, the gear position is detected by the gear position detection device 24, and a signal indicating the current gear position is input to the control device 22. Here, the gear position detection device 24 is not necessarily required because it is only necessary to know the gear position of the vehicle 11. For example, although not shown, gear position information may be input to the control device 22 from the engine control unit (ECU) of the vehicle 11.

  Further, the control device 22 is electrically connected to the reclining device 18 described above. Therefore, in the present embodiment, as an example, when the control device 22 determines that no occupant is seated on the rear power seat 12 and the gear position is determined to be other than parking, the control device 22 The reclining device 18 is operated to control the seat back 14 to recline rearward.

  As shown in FIGS. 1 and 3, a door opening detection device 28 is provided on the rear side door 26 side of the vehicle 11. The door opening detection device 28 is a sensor that detects that the rear side door 26 of the vehicle 11 has been opened, and the door opening detection device 28 and the control device 22 are electrically connected. Thus, for example, when the door opening detection device 28 detects that the rear side door 26 is opened, a signal is input to the control device 22. When the signal output from the door opening detection device 28 is input to the control device 22, the reclining device 18 is operated by the control device 22, and the seat back 14 returns to the reference state P.

  Further, an operation switch 32 for operating the reclining device 18 of the rear power seat 12 is provided on the front seat 30 side. For example, the operation switch 32 can be operated by the driver, and the reclining device 18 can be operated by operating the operation switch 32.

  That is, apart from the above-mentioned conditions determined by the control device 22, the rear power seat 12 is reclined to the reclining state Q by the operation switch 32, or the reclining rear power seat 12 is set to the reference state P. Can be restored. Therefore, even when an occupant is seated on the rear power seat 12, the rear power seat 12 can be brought into the reclining state Q by operating the operation switch 32.

(Operation and effect of vehicle seat control device)
Next, operations and effects of the vehicle seat control apparatus according to the present embodiment will be described with reference to FIGS. 1 and 3 and a flowchart shown in FIG.

  For example, in step 100, a signal (detected result) indicating load data applied to the seat cushion of the rear power seat 12 by the rear occupant detection device 20 is input to the control device 22. In step 102, the control device 22 determines whether an occupant is seated on the rear power seat 12 based on the result detected by the rear occupant detection device 20. Step 102 is repeatedly executed until it is determined that no occupant is seated on the rear power seat 12.

  On the other hand, when it is determined in step 102 that no occupant is seated on the rear power seat 12, the routine proceeds to step 104. In step 104, the current gear position is detected by the gear position detection device 24, and a signal indicating the current gear position is input to the control device 22.

  Next, in step 106, the control device 22 determines whether or not the gear position is other than parking. Step 106 is repeatedly executed until it is determined that the gear position is other than parking.

  On the other hand, if it is determined in step 106 that the gear position is other than parking, the process proceeds to step 108. In step 108, the control device 22 operates the reclining device 18 to recline the seat back 14 backward (reclining state Q).

  In step 110, when the door opening detection device 28 detects that the rear side door 26 has been opened, the process proceeds to step 112. In step 112, the reclining device 18 is operated by the control device 22, and the seat back 14 is returned to the reference state P.

  As described above, in the present embodiment, when the occupant is not seated on the rear power seat 12 of the vehicle 11 and the gear position of the vehicle 11 is shifted to a position other than parking, the seat back 14 reclines to the rear side. Then, the position of the upper end (upper end of the rear seat side seat back) 16A of the headrest 16 moves downward.

  Specifically, as shown in FIG. 1, the seat back 14 is reclined so as to have a preset angle θ (reclining state Q) with respect to a state where the seatback 14 is not reclining (reference state P). That is, in the rear power seat 12, the position of the upper end 16A of the headrest 16 moves downward (from the position indicated by the two-dot chain line to the position indicated by the solid line).

  Thereby, for example, when the vehicle rear side is viewed from the front seat 30 side through the inner mirror 34 (line indicated by an arrow), as shown in FIG. 2B, the upper end portion of the headrest 16 (rear seat side) The range in which the visual field on the rear side of the vehicle is obstructed by the upper end portion (17) of the seat back is narrowed, and the visual field on the rear side of the vehicle can be improved.

  Further, the position of the upper end 16A of the headrest 16 moves downward, and the range in which the field of view on the rear side of the vehicle is obstructed is narrowed, so that the vehicle is turned around on the front seat 30 (see FIG. 1) side and the rear side of the vehicle is viewed. Sometimes the visibility can be improved. FIG. 2A shows a state in which the seat back 14 is in the reference state P as a comparative example with respect to FIG.

  As shown in FIG. 1, since the field of view of the rear side of the vehicle is improved only by reclining the seat back 14 to the rear side, the appearance of the rear power seat 12 is not impaired. Further, for example, since a mechanism such as moving the headrest 16 forward is unnecessary, the application in the present embodiment can be handled at a low cost.

  As described above, according to the present embodiment, it is possible to secure the field of view on the vehicle rear side as viewed from the front seat 30 side without impairing the appearance at low cost.

  Further, in the present embodiment, the control device 22 (see FIG. 3) is configured such that when the occupant is not seated on the rear power seat 12 of the vehicle 11 and the gear position of the vehicle 11 is shifted to a position other than parking, the seat back 14 is controlled to recline backward.

  In other words, when an occupant is seated on the rear power seat 12, the seat back 14 does not recline even if the gear position of the vehicle 11 is shifted other than parking. That is, when an occupant is seated on the rear power seat 12, the control device 22 (see FIG. 3) prevents the seat back 14 from being reclined without permission. Thereby, it is suppressed that the seat back 14 moves against a passenger | crew's will, and it suppresses that comfort for a seated passenger | crew falls.

  In the above embodiment, the rear power seat 12 includes the seat cushion (not shown), the seat back 14 and the headrest 16. That is, the seat back 14 and the headrest 16 are distinguished as separate members. For this reason, the “upper end of the rear seat side seat back” refers to the upper end 16A of the headrest 16 in the present embodiment. On the other hand, although not shown, if the rear seat side seat back and the rear seat side headrest are integrally provided, the “upper end of the rear seat side seat back” means “the upper end portion of the rear seat side seat back”. ".

(Other embodiments)
In the above embodiment, as shown in FIG. 1, when the occupant is not seated on the rear power seat 12 and the gear position of the vehicle 11 is shifted to a position other than parking, the seat back 14 is reclined rearward. Is set to let However, at least when the occupant is not seated on the rear power seat 12, it is only necessary to recline the seat back 14. For this reason, the gear position detection device 24 is not necessarily required. In this case, when no occupant is seated on the rear power seat 12, the seat back 14 can be reclined regardless of the gear position.

  Further, the door opening detection device 28 and the operation switch 32 are not necessarily required like the gear position detection device 24. When the seat back 14 is returned to the reference state P, it is assumed that the occupant is seated. In this case, the seat occupant only has to set the angle of the seat back 14 at a position suitable for himself / herself. is there.

  Further, since the rear occupant detection device 20 in the present embodiment only needs to be able to detect that an occupant is seated on the rear power seat 12, the arrangement of the rear occupant detection device 20 is not limited to the seat cushion side. Absent. For example, it may be disposed on the seat back 14 side, or may be disposed on both the seat cushion and the seat back 14. The rear occupant detection device 20 is a so-called load sensor, but is not limited thereto. Furthermore, not only the rear power seat 12, but also, for example, the presence or absence of a passenger may be detected based on whether or not a seat belt is used.

  Furthermore, in the present embodiment, the rear power seat 12 is a left-right separate type seat, but a bench seat type seat may be applied.

  As mentioned above, although one embodiment of the present invention was described, the present invention is not limited to such an embodiment, and one embodiment and various modifications may be used in combination as appropriate, and the gist of the present invention will be described. Of course, various embodiments can be implemented without departing from the scope.

DESCRIPTION OF SYMBOLS 10 Vehicle seat control apparatus 11 Vehicle 12 Rear power seat (rear seat side power seat)
14 Seat back (rear seat side seat back)
18 Reclining device 20 Rear occupant detection device 22 Control device

Claims (1)

A rear seat side power seat provided with a reclining device for reclining a rear seat side seat back that supports the back of a seated occupant;
A backseat occupant detection device that detects the presence or absence of a occupant in the rear seat side power seat;
When it is determined that no occupant is seated based on the result detected by the rear seat occupant detection device, the reclining device is operated to recline the rear seat side seat back to a predetermined angle on the rear side in the vehicle longitudinal direction. A control device;
A vehicle seat control apparatus comprising:

Images