JP2019156130A - Vehicle seat device - Google Patents

Abstract

To provide a vehicle seat device which enables automatic wearing and release of a belt to a seating occupant.SOLUTION: A vehicle seat device includes: a seat cushion 11 forming a seating surface of an occupant; a seat back 12 which serves as a backrest; a belt 20 for restraining the seating occupant from the front side; and multiple arm members 30 to which the belt 20 is fixed and which are provided at both side parts of the seat back 12. The arm member 30 is moved between a first area where the belt 20 is disposed above the seating occupant and a second area where the belt 20 is attached to the seating occupant.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle seat device including a seat belt for restraining an occupant seated in a seat, for example, at the time of a vehicle collision.

  Conventionally, various devices for restraining an occupant to a seat at the time of a vehicle collision or the like have been developed. One example is a seat belt device. In general, the seat belt device is manually mounted by the occupant, but in recent years, a device that enables automatic mounting has been proposed (see, for example, Patent Document 1).

JP 2008-279985 A

  According to the vehicle occupant restraint device (seat belt device) described in Patent Document 1, the belt can be automatically attached to and detached from the occupant, and the labor of the occupant can be saved. However, there is a problem that the structure of the seat including the seat belt device is complicated, the seat is enlarged, and the cost is increased.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a vehicle seat device capable of automatically attaching and releasing a belt to a seated occupant.

  One aspect of the present invention that solves the above problems includes a seat cushion that forms a seating surface of an occupant, a seat back that serves as a backrest, and a belt for restraining the seated occupant from the front. A vehicle seat device, wherein the belt is fixed, a plurality of arm members provided on both sides of the seat back, a first region disposed above an occupant on which the belt is seated, and the belt A vehicle seat device comprising: a moving means for moving the arm member between a second region to be worn by a passenger seated in the seat.

  Specifically, the moving means moves the arm member from the first region by a combination of sliding movement in the vertical direction and front-rear direction of the seat back and rotation along the side surface of the seat back. The vehicle seat device is moved between the second region.

  In such a vehicle seat device, by moving each arm member provided in the seat back, a belt (seat belt) can be automatically and appropriately attached to a seated occupant, and can be automatically released.

  The arm member includes a first arm member and a second arm member provided independently on one side of the seat back, and a third arm member provided on the other side of the seat back. And preferably. Thereby, a passenger | crew can be restrained more appropriately with a belt.

  Moreover, it is preferable that the said moving means adjusts the restraint force of the passenger | crew by the said belt by moving the said arm member in the front-back direction of the said seat back. Thereby, a passenger | crew's restraint force can be adjusted with a comparatively simple structure.

  Further, tension detecting means provided on the arm member for detecting belt tension acting on the belt is provided, and the moving means has the belt tension detected by the tension detecting means at a predetermined value set in advance. Thus, it is preferable to move the arm member. Thereby, a passenger | crew can be protected more appropriately.

  It is preferable that a physique determination unit that determines a physique of a seated occupant is provided, and the moving unit moves the arm member according to a determination result of the physique determination unit. Accordingly, the belt can be appropriately attached to the occupant regardless of the physique of the occupant.

  According to such a vehicle seat device of the present invention, a plurality of arm members provided on the seat back are moved between the first region and the second region by the moving means, so that the seated occupant can be prevented. The belt can be automatically attached and released.

  Further, by adopting such a configuration, it is possible to reduce the size of the seat device that can automatically mount and dismount the belt, and to suppress an increase in cost.

It is a perspective view showing a vehicular seat concerning one embodiment of the present invention. It is the front view and side view of the vehicle seat which concern on one Embodiment of this invention. It is a figure explaining operation | movement of the vehicle seat which concerns on one Embodiment of this invention. It is a figure explaining operation | movement of the vehicle seat which concerns on one Embodiment of this invention. It is a block diagram showing a schematic structure of a vehicular seat concerning one embodiment of the present invention.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 and 2, a vehicle seat device 10 according to the present embodiment constitutes a front seat (for example, a passenger seat) of a vehicle and forms a seating surface on which an occupant sits. 11 and a seat back 12 serving as a backrest. Further, a headrest 13 for protecting a passenger's head and the like is provided on the upper portion of the seat back 12.

  The vehicle seat device 10 also includes a belt (webbing) 20 for restraining a seated passenger. A plurality of substantially columnar arm members 30 are provided on both sides of the seat back 12, and the belt 20 is fixed to these arm members 30.

  In the present embodiment, the first arm member 31 and the second arm member 32 are independently movably provided on one side surface 12a of the seat back 12 (for example, the side door side of the vehicle). A third arm member 33 is movably provided on the other side surface 12b of the vehicle (center side of the vehicle).

  The first arm member 31, the second arm member 32, and the third arm member 33 are fixed with a belt 20 made of, for example, a belt-shaped woven fabric. Both ends of one belt 20 are fixed to the first arm member 31 and the second arm member 32, respectively, and an intermediate portion of the belt 20 is fixed to the third arm member 33.

  That is, the belt 20 is fixed at three points of the first arm member 31, the second arm member 32, and the third arm member 33, and the belt 20 and these arm members 30 (31, 32, 33) are It functions as a so-called three-point seat belt. The belt 20 is fixed to each arm member 30 in a slightly slack state so that the belt 20 is easily attached to an occupant seated on the seat cushion 11.

  In the seat back 12, a moving means for moving each arm member 30 is provided. For example, a drive source 40 such as a small motor that functions as a part of the moving means is provided in the seat back 12. The first arm member 31, the second arm member 32, and the third arm member 33 are configured to move by the drive source 40.

  In the present embodiment, drive sources 40 are provided corresponding to the first arm member 31, the second arm member 32, and the third arm member 33, respectively. That is, three drive sources 40 (40a, 40b, 40c) are provided in the seat back 12. The first arm member 31, the second arm member 32, and the third arm member 33 can be individually moved by these drive sources 40a, 40b, and 40c.

  Specifically, the first arm member 31 is pivotally supported on the seat back 12 by a first shaft member 51 extending in the width direction (vehicle width direction) of the seat back 12. That is, the first arm member 31 is connected to one end side of the first shaft member 51, and the first shaft member 51 is supported by the seat back 12. Similarly, the second arm member is pivotally supported on the seat back 12 by the second shaft member 52, and the third arm member 33 is pivotally supported on the seat back 12 by the third shaft member 53.

  The other end sides of the first shaft member 51, the second shaft member 52, and the third shaft member 53 are connected to the drive sources 40 (40a, 40b, 40c) provided in the seat back 12. Each is connected.

  Here, the first side rail 12a of the seat back 12 is provided with a first slide rail 45 continuous in the vertical direction of the seat back 12, and the other side surface 12b also extends in the vertical direction of the seat back 12. A second slide rail 46 that is continuous is provided.

  The first shaft member 51 and the second shaft member 52 are coupled to the drive source 40 (40a, 40b) while being engaged with the first slide rail 45, respectively. Can be slid in the vertical direction. The third arm member 33 is coupled to the drive source 40 (40 c) while being engaged with the second slide rail 46, and is slidable along the second slide rail 46. .

  In the present embodiment, the first arm member 31 and the second arm member 32 are movable along the same slide rail (first slide rail), but the side surface 12a of the seat back 12 is used. Two slide rails are arranged side by side, and the first arm member 31 (first shaft member 51) and the second arm member 32 (second shaft member 52) are provided along separate slide rails. It may be movable.

  The first arm member 31 is connected to one end side of the first shaft member 51 so as to be movable (slidable) in the longitudinal direction (left-right direction in FIG. 2B). For example, the first arm member 31 is provided with a first rail member 61 along its longitudinal direction, and one end side of the first shaft member 51 is engaged with the first rail member 61. ing. The first arm member 31 (first shaft member 51) is configured to be slidable along the first rail member 61 and to be held at an arbitrary position of the first rail member 61. Has been.

  Similarly, the second arm member 32 is provided with a second rail member 62 along the longitudinal direction, and one end side of the second shaft member 52 is engaged with the second rail member 62. Has been. The second arm member 32 (second shaft member 52) is slidable along the second rail member 62 and can be held at an arbitrary position of the second rail member 62. Has been.

  A third rail member 63 is provided along the longitudinal direction of the third arm member 33, and one end side of the third shaft member 53 is engaged with the third rail member 63. . The third arm member 33 (third shaft member 53) is configured to be slidable along the third rail member 63 and to be held at an arbitrary position of the third rail member 63. Has been.

  Further, the first arm member 31 (first shaft member 51) is configured to be rotatable along the side surface of the seat back 12 around the first shaft member 51. Similarly, the second arm member 32 is configured to be rotatable along the side surface 12 a of the seat back 12 around the second shaft member 52. Further, the third arm member 33 is configured to be rotatable along the side surface 12 b of the seat back 12 around the third shaft member 53.

  The first arm member 31 and the second arm member 32 are provided on the same side surface 12a of the seat back 12 so as not to overlap in the vehicle width direction. In the present embodiment, the second shaft member 52 protrudes from the side surface 12 a of the seat back 12 to the outside of the first arm member 31, and the second arm member 32 is arranged outside the first arm member 31. (See FIG. 2). Thereby, the 1st arm member 31 and the 2nd arm member 32 can be rotated along the side surface 12a, without interfering with each other.

  According to the vehicle seat device 10 having such a configuration, the belt 20 can be automatically attached to and released from the occupant seated on the seat cushion 11.

  For example, as shown in FIGS. 3 (a) and 4 (a), in a state in which no occupant is seated, each arm member 30 has a belt 20 above the occupant (first region), for example, The headrest 13 is held so as to be disposed in a region above the headrest 13. At this time, each arm member 30 is held with the upper ends of the first slide rail 45 and the second slide rail 46 and extending toward the upper side of the seat back 12.

  When the occupant sits on the seat cushion 11, as shown in FIGS. 3 (b) and 4 (b), each arm member 30 is rotated about 90 degrees toward the front side of the vehicle. Further, FIGS. As shown in 4 (c), the vehicle is lowered to a predetermined position in accordance with the occupant's physique. First, the second arm member 32 is lowered along the first slide rail 45 and the third arm member 33 is lowered along the second slide rail 46, and then the first arm member is necessary. 31 is slightly lowered along the first slide rail 45.

  Thereafter, as shown in FIG. 4D, each arm member 30 is moved to the rear side of the seat back 12 (the vehicle rear side) by a predetermined amount. Thereby, the belt 20 can be appropriately attached to the occupant. Further, the belt 20 can be unmounted by moving each arm member 30 in the reverse direction.

  In this embodiment, the upper body (shoulder and chest) of the occupant is mainly restrained by the belt 20 (shoulder belt portion 20a) provided between the first arm member 31 and the third arm member 33. Is done. The lower body (waist) of the occupant is mainly restrained by the belt 20 (lap belt portion 20b) provided between the second arm member 32 and the third arm member 33.

  In the vehicle seat device 10 according to the present invention, when the occupant sits on the seat cushion 11, the first arm member 31, the second arm member 32, and the third arm member 33 are moved at a predetermined timing, and the occupant is moved. The belt (seat belt) 20 is automatically mounted on the belt 20 and, for example, the belt 20 is automatically released according to the request of the occupant.

  Specifically, as shown in FIG. 5, the vehicle seat device 10 includes, for example, an input / output device, a storage device (ROM, RAM, etc.), a central processing unit (CPU), a timer counter, and the like. A control unit 100 that controls the operation state is provided.

  The seat cushion 11 is provided with a first pressure sensor 71 that detects a load on the seat cushion 11. Each arm member 30 is provided with a second pressure sensor 72 as tension detecting means for detecting tension acting on the belt 20 (belt tension).

  The control unit 100 moves each arm member 30 based on the detection information of the first pressure sensor 71 and the second pressure sensor 72. That is, the control unit 100 appropriately controls the operating state of each drive source 40 based on detection information from the first pressure sensor 71 and the second pressure sensor 72. In addition, the control unit 100 appropriately moves each arm member 30 so that the occupant is appropriately restrained even when a vehicle collision is detected.

  Specifically, the control unit 100 includes a physique determination unit 101, a collision determination unit 102, and a movement control unit 103.

  The physique determination means 101 determines whether the occupant is seated or separated based on the detection information of the first pressure sensor 71, and determines the occupant's physique when the occupant is seated. For example, it is determined whether the occupant is a child or an adult. The method for determining the occupant's physique is not particularly limited, and various other methods can be employed.

  The collision determination unit 102 determines the presence or absence of a vehicle collision and further the collision mode based on the detection information of the collision sensor 200 provided in the vehicle. Note that the collision sensor includes, for example, an acceleration sensor, a pressure sensor, and the like, and is appropriately disposed at the front end of the vehicle. Moreover, the collision determination means 102 does not necessarily need to be provided in the control unit 100 of the vehicle seat device 10 and may be provided in a vehicle control device.

  The movement control unit 103 controls the operation of each drive source 40 based on the determination result of the physique determination unit 101 or the collision determination unit 102 so that a predetermined tension is applied to the belt 20 (the passenger can be appropriately restrained). As described above, each arm member 30 is appropriately moved.

  When the physique of the seated occupant is determined based on the detection information of the first pressure sensor 71, the movement control means 103 first moves each arm member 30 disposed in the first region above the headrest 13 to the arm member 30. The belt 20 is automatically attached to the occupant. That is, each arm member 30 is moved so that the belt 20 is disposed in the second region that is the mounting position for the occupant.

  At that time, the movement control means 103 moves the arm member 30 in accordance with the occupant's physique determined by the physique determination means 101. That is, the movement control means 103 appropriately corrects the movement position of each arm member 30 according to the occupant's physique.

  For example, when it is determined that the occupant's physique is large (for example, an adult), the movement position of each arm member 30 is set to a relatively high position of the seat back 12, and the occupant is small (for example, If it is determined that the arm member 30 is moved, the movement position of each arm member 30 is corrected to a relatively low position of the seat back 12. Furthermore, the movement control means 103 moves each arm member 30 so that the detection information (belt tension) detected by the second pressure sensor 72 becomes a predetermined value set in advance. Thus, by appropriately correcting the movement position of the arm member 30, the belt 20 can be appropriately attached to the occupant.

  Further, when it is determined that the vehicle has collided, the movement control means 103 appropriately moves the arm members 30 in the front-rear direction of the seat back 12 to adjust the occupant's restraining force as appropriate. Specifically, immediately after the collision of the vehicle, each arm member 30 is moved to the rear side of the seat back 12 to increase the restraining force of the occupant, and then each arm member 30 is moved to the front of the seat back 12 at a predetermined timing. Move to the side to weaken the occupant's restraining force. Of course, also at this time, the movement control means 103 moves each arm member 30 so that the detection information (belt tension) detected by the second pressure sensor 72 becomes a predetermined value set in advance. Thereby, a passenger | crew can be protected appropriately at the time of a collision.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the above-mentioned embodiment. The present invention can be modified as appropriate without departing from the spirit of the present invention.

  For example, in the above-described embodiment, the configuration including one belt including the shoulder belt portion and the lap belt portion is exemplified, but the shoulder belt portion and the lap belt portion may be configured by two independent belts. Good.

  When two belts are provided, two arm members to which one belt (shoulder belt portion) is fixed and two arm members to which the other belt (lap belt portion) is fixed may be provided. Good.

DESCRIPTION OF SYMBOLS 10 Vehicle seat apparatus 11 Seat cushion 12 Seat back 13 Headrest 20 Belt 31 1st arm member 32 2nd arm member 33 3rd arm member 40 Drive source 45 1st slide rail 46 2nd slide rail 51 1st 1 shaft member 52 2nd shaft member 53 3rd shaft member 61 1st rail member 62 2nd rail member 63 3rd rail member 71 1st pressure sensor 72 2nd pressure sensor 100 Control part 101 Physique determination means 102 collision determination means 103 movement control means 200 collision sensor

Claims (6)

A vehicle seat device comprising: a seat cushion that forms a seating surface of an occupant; a seat back that serves as a backrest; and a belt for restraining the seated occupant from the front,
A plurality of arm members fixed to the belt and provided on both sides of the seat back;
Moving means for moving the arm member between a first region disposed above an occupant seated on the belt and a second region mounted on the occupant seated on the belt; A vehicle seat device comprising: The vehicle seat device according to claim 1,
The moving means moves the arm member in the first area and the second area by combining the sliding movement of the seat back in the vertical direction and the front-rear direction and the rotation along the side surface of the seat back. The vehicle seat device is characterized in that it is moved between the vehicle seat device and the vehicle seat device. The vehicle seat device according to claim 1 or 2,
The arm member includes a first arm member and a second arm member provided independently on one side of the seat back, and a third arm member provided on the other side of the seat back, A vehicle seat device comprising: The vehicle seat device according to any one of claims 1 to 3,
The vehicle seat device according to claim 1, wherein the moving means adjusts the restraining force of the occupant by the belt by moving the arm member in the front-rear direction of the seat back. The vehicle seat device according to claim 4,
A tension detecting means provided on the arm member for detecting a belt tension acting on the belt;
The vehicle seat device, wherein the moving means moves the arm member so that the belt tension detected by the tension detecting means becomes a predetermined value set in advance. The vehicle seat device according to any one of claims 1 to 5,
Equipped with a physique determination means for determining the physique of the seated passenger,
The vehicle seat device according to claim 1, wherein the moving means moves the arm member in accordance with a determination result of the physique determining means.

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