JP2011111121A - Seat device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve usability of back faces of seat backs 7, 12 in a reclined state in three seats 2, 3 while suppressing increase of the cost and weight of a vehicular seat device 1 when the seat device 1 includes the three seats 2, 3 laid in the vehicle width direction. <P>SOLUTION: Only a center seat cushion supporting part includes an interlocking mechanism moving a seat cushion 11 downward interlocked to switching of the seat back 12 corresponding to the seat cushion 11 from a standing state to a reclined state, the thickness in the vertical direction of the center seat 3 in the reclined state of the seat back 12 of the center seat 3 is formed thicker than the thickness in the vertical direction of the side seat 2 in the reclined state of the seat back 7 of the side seat 2, and downward moving amount of the seat cushion 11 by the interlocking mechanism is set the differential amount or more of the thickness in the vertical direction of the center seat 3 and the side seat 2 in the reclined state. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a pair of side seats spaced apart in the vehicle width direction on a floor panel that forms a floor of a vehicle cabin, and a center seat disposed between the pair of side seats. The present invention belongs to a technical field related to a vehicular seat device.

  Conventionally, in a seat device disposed just before the cargo compartment at the rear of the vehicle, it is possible to place a load on the back of the seat back by lying the seat back on the seat cushion on the seat cushion well known. In addition, in the seat device, when the seat back is lying down, the height of the back of the seat back at the time of lying down is lowered by moving the seat cushion downward in conjunction with the lying down. A so-called dive-down seat device is also known (see, for example, Patent Document 1). Such a seat device is composed of a plurality (usually two or three) of seats arranged side by side in the vehicle width direction, and each of the seats can be independently stored. This makes it possible to arrange seats according to the number of passengers, the size of luggage, and the like.

JP-A-2005-247318

  By the way, in the above-mentioned seat device, normally, when the seat backs of all the seats are in an upright state, the seating surfaces of all the seat cushions are set at substantially the same height position, and the backrest surfaces of all the seat backs are in the seat longitudinal direction. It is set at substantially the same position.

  However, when the seat device includes three seats arranged in the vehicle width direction, a seat cushion and a seat back vehicle in a pair of seats (side seats) positioned outside in the vehicle width direction among these three seats. While the side support portion is formed at the outer end portion in the width direction, the side support portion may not be formed from the viewpoint of space or the like in the seat cushion and the seat back of the seat (center seat) between the pair of side seats. . Further, the armrest may be configured to be retractable at the center portion in the vehicle width direction of the seatback of the center seat. For this reason, there is a high possibility that the thickness of the seat cushion or the seat back is different between the side seat and the center seat. As a result, when all the seats arranged in the vehicle width direction are dive-down stored, there is a high possibility that the heights of the backs of the seat backs of these seats do not match. For this reason, even if all the seats are dive-down stored, depending on the height relationship between the back of the seat back of the side seat and the back of the seat back of the center seat, the convenience of the back of the seat back of the seats is degraded. there is a possibility.

  In addition, when the seat device has three seats, if all of these seats are configured to be dive-down stowable, an interlocking mechanism that moves the seat cushion downward in conjunction with the fall of the seat back in all the seats. This is necessary, which may increase the cost and weight of the seat device.

  The present invention has been made in view of such a point, and an object of the present invention is to provide the cost of the seat device when the vehicle seat device includes three seats arranged in the vehicle width direction. An object of the present invention is to improve the usability of the back surface of the seat back in the lying state of the three seats while suppressing an increase in weight.

  In order to achieve the above object, according to the present invention, a pair of lateral sides having a seat cushion and a seat back, which are spaced apart from each other in the vehicle width direction on a floor panel forming a floor of a vehicle compartment of a vehicle. A seat, a central seat having a seat cushion and a seat back, disposed between the pair of side seats, and two side seat cushions for supporting the seat cushions of the both side seats on the floor panel, respectively. For a vehicle seat device including a support portion and a center seat cushion support portion that supports the seat cushion of the center seat on the floor panel, the side seat and the seat back of the center seat are each standing upright. The side seat cushion is configured to be switchable between a state and a lying state lying on the seat cushion corresponding to the seat back. Only the central seat cushion support part of the seat support part and the central seat cushion support part moves the seat cushion downward in conjunction with the switching from the standing state of the seat back corresponding to the seat cushion to the lying down state. And the vertical thickness of the central sheet in the lying state of the seat back of the central sheet is greater than the vertical thickness of the lateral sheet in the lying state of the seat back of the side sheet. It is formed thick, and the amount of downward movement of the seat cushion of the center seat by the interlocking mechanism is set to be equal to or greater than the amount of difference in the vertical thickness between the center seat and the side seat in the lying state. Made the configuration.

  With the above configuration, since only the central sheet needs to be configured to be able to be dive down stored, it is possible to significantly reduce the cost and weight of the sheet device as compared to the case where all the sheets are configured to be able to be stored dive down. . In addition, by storing only the center sheet in a dive down state more than the amount of difference in the vertical thickness between the center sheet and the side sheet when the seat back is lying down, the back of the seat back of the center sheet is It is possible to prevent the body from lying down so as to protrude upward with respect to the back surface of the seat back. In this way, by storing the center sheet in a dive down state more than the difference in the vertical thickness between the center sheet and the side sheet in the above-described lying state, the center sheet is in a lying state while suppressing an increase in cost and weight of the sheet device. Usability on the back of a certain seat back can be improved.

  In the vehicle seat, the downward movement amount of the seat cushion of the central seat by the interlocking mechanism is set to be larger than the difference in the vertical thickness between the central seat and the side seat in the lying state. When the side seat and the seat back of the center seat are in a lying state, the back of the seat back of the center seat is located at a lower position than the back of the seat back of the side seat. preferable.

  As a result, when the back of the seat back of the center seat is lower than the back of the seat back of the side seat and a long load is loaded on the back of the seat back of the center seat, both sides thereof By the seat back of the side seat, it is possible to hold the long luggage so as not to move in the seat width direction (vehicle width direction). In addition, by lowering the back surface of the seat back of the central seat, it becomes possible to easily load a tall baggage (for example, a bicycle) having a small width. Furthermore, in the case of a large baggage, it suffices to load the baggage so as to straddle the back of the seat back of both side seats, even if the height position of the back of the seat back of both side seats is the same. For example, there is no problem even if the back surface of the seat back of the central seat is lower than the height position. Therefore, it is possible to improve the usability of the back surface of the seat back in a lying state while suppressing an increase in cost and weight of the seat device.

  In the vehicle seat, the seat back of the central seat has an armrest, the armrest is stored in the seatback, and one surface of the stored armrest covers a part of the backrest surface of the seatback. It is preferable to be configured to be switchable between a storage state to be formed and a use state that protrudes forward from the seat back and can be used as an armrest.

  This makes it possible for an occupant sitting on the side seat to use the armrest as an armrest when the armrest is in use, thereby improving the comfort of the occupant. Then, when the armrest is provided on the seat back of the central seat in this way, the thickness of the seat back of the central seat becomes thick, and when the entire seat back is in a lying state, the back of the seat back of the central seat is It protrudes greatly upward with respect to the back surface of the seat back of the seat. However, in the present invention, even if the armrest is provided, the interlocking mechanism can prevent the back surface of the seat back of the central seat from protruding upward with respect to the back surface of the seat back of the side seat. Therefore, it is possible to achieve both improvement in passenger comfort and improvement in usability of the back of the seat back in the lying state.

  When the seat back of the central seat has an armrest, the seat cushion of the side seat and the seat back of the seat back in the vehicle width direction outside are formed to bulge more than the seat cushion seat surface or the seat back back surface. The side seat portion is formed, and the thickness in the vertical direction including the side support portion of the side seat in the lying state of the seat back of the side seat is the center seat in the lying down state of the seat back of the center seat. It is preferable that the thickness is smaller than the thickness in the vertical direction.

  This makes it possible to hold the occupant so as not to roll with respect to the centrifugal force generated when the vehicle bends. Even if such a side support portion is formed, the armrest is provided on the seat back of the center seat, so that when all the seat backs are in a lying state, the back of the seat back of the center seat is It protrudes upward with respect to the back surface of the seat back. However, in the present invention, the interlock mechanism can prevent the rear surface of the seat back of the central seat from protruding upward with respect to the rear surface of the side seat. Therefore, it is possible to achieve both improvement in passenger comfort and retention and improvement in usability of the back of the seat back in the lying state.

  In the vehicle seat, the seat backs of the side seats and the center seat are pivoted about a pivot shaft extending in the seat width direction at a lower end when the seat is in a standing state, so that a standing state and a lying state are established. The pivot shafts of all the seat backs are located on the same straight line, and the rear end portions of the backs of all the seat backs in the lying state are located at substantially the same height position. It is preferable.

  As a result, when the side seat and the seat back of the center seat are in the lying state, the rear end of the back of the seat back of the side seat is approximately the same height as the rear end of the back of the seat back of the center seat. It can be located in the position. As a result, when the cargo compartment is provided immediately behind the vehicle seat device, the rear end of the back surface of all seat backs in the lying state is positioned at substantially the same height as the floor of the cargo compartment. By doing so, it is possible to place a large baggage having a large width on the back surface of the seat back of the side seat while sliding on the floor of the cargo compartment without lifting. It is also possible to place a small load on the back of the seat back of the central seat while sliding on the floor of the luggage compartment without lifting.

  In the vehicle seat, it is preferable that an article storage unit for storing articles formed in a box shape opening upward is provided below the seat cushion of at least one of the side seats.

  That is, since the side seat is not stored in the dive down, there is an empty space below the seat cushion of the side seat. This empty space can be used effectively as an article storage unit. Further, the article can be stored inside the article storage portion so as not to obstruct the passenger's seating, and the convenience of the passenger can be improved.

  The vehicle seat is disposed immediately before the cargo compartment of the vehicle, and when the side seats and the center seat are in a lying state, the rear end of the back of all seat backs is It is preferable that they are located at substantially the same height as the floor of the cargo compartment.

  Thereby, the utility of a vehicle compartment and a luggage compartment can be improved, and the effect of this invention can be exhibited effectively.

  As described above, according to the vehicle seat device of the present invention, when the seat back of the side seat and the center seat is in a lying state while suppressing an increase in cost and weight of the seat device, the seat of the center seat It is possible to prevent the rear surface of the back from projecting upward with respect to the rear surface of the seat back of the side seat, thereby improving the usability of the rear surfaces of these seat backs.

It is the perspective view seen from the slanting front which shows the external appearance of the vehicle seat apparatus when all the seat backs are in the standing state according to the embodiment of the present invention. It is a side view which shows a side seat, a side seat cushion support part, and a side seat back support bracket. It is a side view which shows the inside of this center seat when a seat back of a center seat is in a standing state, a center seat cushion support part, and a center seat back support bracket. FIG. 4 is a view corresponding to FIG. 3, showing a state in which the seat back of the center seat is in a lying state. It is a side view which shows the positional relationship of the side cushion and seat cushion of a center seat, and a seat back when all the seat backs are in a lying state. It is a perspective view which shows a seat cushion pan and a supporting member. It is a front view which shows the positional relationship of a side cushion and a seat cushion of a center seat, and a seat back when all the seat backs are in a lying state. FIG. 2 is a view corresponding to FIG. 1 showing a state in which all seat backs are lying down. It is a front view which shows the positional relationship of the seat cushion and seat back of a side seat and a center seat when all the seat backs are in a lying state based on another embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows an appearance of a vehicle seat device 1 according to an embodiment of the present invention. The seat device 1 is disposed immediately before the cargo compartment 72 (see FIGS. 2 and 3) provided at the rear portion of the vehicle (the rear end portion of the passenger compartment 71 (see FIGS. 2 and 3)). A pair of side seats 2 that are spaced apart in the vehicle width direction on a floor panel 21 (see FIGS. 2 to 5, 7) that forms a floor of a casing 71 of the vehicle, A center sheet 3 is provided between the pair of side sheets 2 so as to be in contact with the pair of side sheets 2. A line L shown in FIG. 1 is a boundary line between the side sheet 2 and the center sheet 3. The width direction of each seat 2, 3 coincides with the vehicle width direction, the front side of each seat 2, 3 is the vehicle front side, and the rear side of each seat 2, 3 is the vehicle rear side. Hereinafter, the front and rear of the seats 2 and 3 and the vehicle are simply referred to as front and rear, respectively.

  Each of the side seats 2 includes a seat cushion 6, a seat back 7 erected at a rear position of the seat cushion 6, and a headrest 8 attached to an upper end portion of the seat back 7. Hereinafter, the seat cushion 6, the seat back 7, and the headrest 8 of each side seat 2 are referred to as the side seat cushion 6, the side seat back 7, and the side headrest 8, respectively. As will be described later, each side seat back 7 is configured to be switchable between a standing state and a lying state lying on the side seat cushion 6 corresponding to the side seat back 7.

  Similarly to the side seats 2, the central seat 3 includes a seat cushion 11, a seat back 12 standing at a rear position of the seat cushion 11, and a headrest 13 attached to an upper end portion of the seat back 12. Have. Hereinafter, the seat cushion 11, the seat back 12, and the headrest 13 of the central seat 3 are referred to as the central seat cushion 11, the central seat back 12, and the central headrest 13, respectively. As will be described later, the central seat back 12 is also configured to be switchable between a standing state and a lying state lying on the central seat cushion 11 corresponding to the central seat back 12.

  A side support portion 6b that protrudes upward from the seating surface 6a is formed at the end of each side seat cushion 6 on the outer side in the vehicle width direction (the end opposite to the center seat 3). In addition, a side support portion 7b is formed at an end portion of each side seatback 7 in the standing state on the outer side in the vehicle width direction so as to protrude forward from the backrest surface 7a. These side support portions 6b and 7b hold the occupant so as not to roll. It should be noted that the side support portion may be formed only at the outer end portion in the vehicle width direction of either one of the side seat cushion 6 and the side seat back 7, or may not be formed on either.

  On the other hand, side support portions are not formed on the central seat cushion 11 and the central seat back 12, the entire width direction of the central seat cushion 11 is a seating surface 11a, and the entire width direction of the central seat back 12 is a backrest surface. 12a. The central seat back 12 is provided with a retractable armrest 19. The armrest 19 is stored in a rectangular storage recess 12d formed on the backrest surface 12a of the central seatback 12, and is used in a state of being usable as an armrest by projecting forward from the central seatback 12. And can be switched to. In the retracted state of the armrest 19, the front surface of the armrest 19 (the lower surface in the used state) forms part of the backrest surface 12a. When the armrest 19 is in use, an occupant seated on the side seat 2 can be used as the armrest. When the central seat back 12 is in the upright state and the armrest 19 is in the retracted state, the backrest surface 12 a projects forward from the backrest surface 7 a of the side seat back 7. The amount of protrusion of the backrest surface 12a with respect to the backrest surface 7a includes the amount of protrusion of the side support portion 6b of the side seat cushion 6 with respect to the seating surface 6a and the amount of protrusion of the side support portion 7b of the side seatback 7 with respect to the backrest surface 7a. It is larger than the value added. Thus, when the central seat back 12 is in the upright state and the armrest 19 is in the retracted state, the backrest surface 12a of the central seatback 12 is in front of the backrest surface 7a of the side seatback 7 and the side support. It is located in front of the tip of the portion 7b.

  In the standing state of the side seat back 7 and the center seat back 12, the seating surface 11a of the center seat cushion 11 is substantially at the same height as the seating surface 6a of the side seat cushion 6, and the lower surface of the center seat cushion 11 is The side seat cushion 6 is substantially at the same height as the lower surface. However, in the lying state of the side seat back 7 and the center seat back 12, as described later, only the center seat cushion 11 moves downward, so that the seating surface 11a of the center seat cushion 11 While being lower than the seating surface 6 a, the lower surface of the central seat cushion 11 is also lower than the lower surface of the side seat cushion 6. Further, the back surface of the central seat back 12 in the standing state is located at substantially the same position as the back surface of the side seat back 7 in the standing state in the front-rear direction.

  The width of the central seat cushion 11 is smaller than the width of the side seat cushion 6, and the width of the central seat back 12 is smaller than the width of the side seat back 7. The width of the central seat cushion 11 and the width of the central seat back 12 are substantially the same, and the width of the side seat cushion 6 and the width of the side seat back 7 are substantially the same.

  As shown in FIGS. 2 to 5, the floor panel 21 includes a first floor portion 21 a serving as a footrest for each occupant seated on the side seat 2 and the center seat 3, and a rear side of the first floor portion 21 a. The kick-up portion 21b that is provided continuously to the upper side of the first floor portion 21a and the inclined portion that is provided continuously to the rear side of the kick-up portion 21b and rises toward the rear side. 21c and a second floor portion 21d provided continuously on the rear side of the inclined portion 21c. The upper side of the second floor portion 21d (that is, the upper side of the floor panel 21 behind the seat device 1) is a luggage compartment 72. A flexible floor member 73 constituting the floor of the luggage compartment 72 is laid on the second floor portion 21d via a floor board (not shown). The front end of the floor member 73 is fixed to the lower end portions of the side seat back 7 and the central seat back 12 in the standing state (the rear end portion when in the lying state). When the side seat back 7 and the central seat back 12 are in an upright state, the vicinity of the front end of the floor member 73 is slacked downward (see FIG. 3), while the side seat back 7 and the central seat back 12 are When in a lying state, it is in a straight tension state (see FIGS. 2 and 4).

  The side seat cushion 6 and the center seat cushion 11 are disposed above the kick-up portion 21b of the floor panel 21, and the side seat back 7 and the center seat back 12 are disposed above the inclined portion 21c of the floor panel 21. It is arranged.

  In addition, since the internal structure of the both-side seat 2 is the same, and the structure of the two side seat cushion support portions 23 that respectively support the both-side seat cushion 6 on the floor panel 21 is also the same, hereinafter, one side The structure of the side seat cushion support portion 23 that supports the side seat and the side seat will be described.

  As shown in FIG. 2, the side seat back 7 is provided by a pair of left and right side seat back support brackets 22 respectively disposed at positions corresponding to both side portions of the side seat back 7 in the inclined portion 21c. It is supported on the floor panel 21. That is, in the side seat back 7, a seat back frame 7 c formed in a substantially rectangular frame shape is disposed along the upper and lower surfaces and both side surfaces of the side seat back 7 in the standing state, Rotating shafts 7d extending outward in the seat width direction are integrally provided at lower ends of both side portions of the seat back frame 7c. Each pivot shaft 7d is rotatably supported by each side seat back support bracket 22 described above. Thereby, the side seat back 7 is rotated around the rotation shaft 7d from the standing state in which the occupant can sit on the side seat 2 (the state indicated by the two-dot chain line in FIG. 2), It is possible to switch to a lying state (state indicated by a solid line in FIG. 2) lying on the side seat cushion 6.

  The side seat cushion 6 is supported on the floor panel 21 by the side seat cushion support portion 23. The side seat cushion support portion 23 is configured by a support member 31 that is fixed to the kick-up portion 21 b of the floor panel 21 and supports the side seat cushion 6. As shown in FIG. 6, the support member 31 has an article storage portion 31 a formed in a rectangular parallelepiped box shape opening upward. On the other hand, an inverted dish-shaped seat cushion pan 15 whose entire periphery is protruded downward is fixed to the lower end portion of the side seat cushion 6, and the seat cushion pan 15 is open to the article storage portion 31a. It is placed on the support member 31 so as to block. Thus, the side seat cushion 6 is supported on the floor panel 21 by the side seat cushion support portion 23 (support member 31). Thus, the article storage portion 31a is provided on the lower side of the side seat cushion 6. The article storage unit 31a is not necessarily required. Further, the article storage portion 31a may be provided on the lower side of only one side seat cushion 6. Furthermore, you may comprise the articles | goods accommodating part 31a with a member different from the supporting member 31 which supports the side seat cushion 6. FIG.

  Through holes 15 a are formed in front side portions on both sides in the seat width direction at the peripheral edge of the seat cushion pan 15 of the side seat cushion 6. In addition, rotation shafts 31b that are fitted in the through holes 15a are fixed to the side surfaces of the article storage unit 31a on both sides in the sheet width direction. Thereby, the seat cushion pan 15 (side seat cushion 6) is configured to be rotatable around the rotation shaft 31b. When the article is taken in and out of the article storage portion 31a, the side seat cushion 6 is lifted by lifting the rear end portion of the side seat cushion 6 when the side seat back 7 is in the standing state. Is rotated counterclockwise around the rotation shaft 31b in FIG. 2 to open the opening of the article storage portion 31a.

  As shown in FIG. 3, like the side seat back 7, the central seat back 12 is a pair of left and right disposed respectively at positions corresponding to both side portions of the central seat back 12 in the inclined portion 21 c of the floor panel 21. Is supported on the floor panel 21 by the central seat back support bracket 40.

  A seat back frame 12b formed in a substantially rectangular frame shape similar to that of the side seat back 7 is disposed in the central seat back 12, and the seat back frame 12b has seats on the lower ends on both side portions thereof. Rotating shafts 12c extending outward in the width direction are integrally provided. Each pivot shaft 12c is rotatably supported by each central seat back support bracket 40. As a result, the central seat back 12 is turned up around the rotation shaft 12c from the standing state (state shown in FIG. 3) in which the occupant can sit on the central seat 3, and on the central seat cushion 11. It is possible to switch to the lying down lying state (the state shown in FIG. 4).

  A back plate 12e is provided at the rear of the seat back frame 12b of the central seat back 12 so as to cover the frame-like opening of the seat back frame 12b. A pair of left and right armrest support members 12f are mounted and fixed near the upper side of the rotation shaft 12c in the back plate 12e so as to be positioned on both sides of the armrest 19. The lower end portion of the armrest 19 in the retracted state is supported by the armrest support member 12f so as to be rotatable around a shaft 12g extending in the seat width direction. As a result, the armrest 19 can be switched between a retracted state (state indicated by a solid line in FIG. 3) and a use state (state indicated by a two-dot chain line in FIG. 3).

  The center seat cushion 11 is supported on the floor panel 21 by a center seat cushion support portion 41. The central seat cushion support portion 41 includes a front support portion 41 a that supports the front portion of the central seat cushion 11 on the floor panel 21, and a rear support portion that supports the rear portion of the central seat cushion 11 on the floor panel 21. 41b. That is, in the central seat cushion 11, a seat cushion frame 11b formed in a substantially rectangular frame shape is disposed along the front surface, the rear surface, and both side surfaces of the central seat cushion 11, and the seat cushion frame 11b. The front end portions of the both side portions are supported by the front support portion 41a, and the rear end portions of the both side portions of the seat cushion frame 11b are supported by the rear support portion 41b.

  The front support portion 41a includes a pair of left and right central seat cushion support brackets 32 mounted and fixed across the first floor portion 21a and the kick-up portion 21b of the floor panel 21 below the central seat cushion 11, and the pair of The central seat cushion support bracket 32 is attached and fixed to a pair of left and right rotating members 33 supported so as to be rotatable about a shaft 35 extending in the seat width direction, and front end portions on both side portions of the seat cushion frame 11b. And a pair of left and right mounting members 34. Each rotation member 33 is connected to each attachment member 34 so as to be rotatable around a shaft 36 extending in the sheet width direction. When the central seat back 12 is in the standing state, the rotating member 33 extends in the vertical direction, and the shaft 36 is positioned substantially directly above the shaft 35.

  The rear support portion 41b includes a pair of left and right connecting members 37 that connect the seat cushion frame 11b and the seat back frame 12b, and the central seat cushion 11 via the seat back frame 12b and the central seat back support bracket 40. The rear portion (the rear end portions on both side portions of the seat cushion frame 11b) is supported with respect to the floor panel 21. One end portions of the pair of connecting members 37 are fixedly attached to the rear end portions of both side portions of the seat cushion frame 11b, while the other end portions of the rotation shafts 12c on both side portions of the seat back frame 12b. In the vicinity of the upper side and the rear side, they are respectively connected so as to be rotatable around a shaft 38 extending in the sheet width direction.

  The central seat cushion support portion 41 is configured to move the central seat cushion 11 forward and downward in conjunction with the switching of the central seat back 12 from the standing state to the lying state. That is, when the center seat back 12 is tilted forward from the standing state around the rotation shaft 12c, the other end portion of the connecting member 37 is also rotated about the rotation shaft 12c and moved to the front side. Thereby, the upper end part of the rotation member 33 is pushed to the front side via the connecting member 37 and the seat cushion frame 11b, and the rotation member 33 rotates about the shaft 35 and counterclockwise in FIG. . As a result, the central seat cushion 11 (seat cushion frame 11b) moves forward and downward. In particular, the front portion of the central seat cushion 11 moves greatly downward. Thus, the front support portion 41a and the rear support portion 41b constitute an interlocking mechanism that moves the central seat cushion 11 downward in conjunction with the switching of the central seat back 12 from the standing state to the lying state. become. As described above, the central sheet 3 is configured to be so-called dive-down storage by this interlocking mechanism.

  On the other hand, the side seat cushion support portion 23 does not have such an interlocking mechanism as described above. That is, the side seat cushion support part 23 supports the side seat cushion 6 in the same position as the standing state of the central seat back 12 with respect to the floor panel 21 in the lying state of the side seat back 7. For this reason, even if the side seat back 7 is laid down, the side seat cushion 6 does not move in conjunction with the lay down (it is not stored in the dive down). Therefore, only the central seat cushion support portion 41 of the side seat cushion support portion 23 and the central seat cushion support portion 41 has the interlocking mechanism.

  As shown in FIG. 4, when the central seat back 12 is in the lying down state (the armrest 19 is in the retracted state), the backrest surface 12 a of the central seat back 12 contacts the seating surface 11 a of the central seat cushion 11. At the same time, the headrest 13 comes into contact with the front end portion of the seating surface 11 a of the central seat cushion 11. Basically, the backrest surface 12a of the central seat back 12 comes into contact with the seating surface 11a of the central seat cushion 11, and the headrest 13 may be in the center depending on the elastic deformation of the contacted portion. The seat cushion 11 comes into contact with the front end portion of the seating surface 11a. In this lying down state, the back surface (upper surface) of the central seat back 12 is in a substantially horizontal state.

  On the other hand, the side seat cushion 6 does not move to the front side in conjunction with the overturning of the side seat back 7 unlike the central seat cushion 11, so the side seat cushion 6 is on the turning trajectory of the side headrest 8. Therefore, the side headrest 8 does not contact the front end of the seating surface 6a of the side seat cushion 6 and the side support portion 7b of the side seat back 7 is not in contact. Will come into contact with the side support portion 6b of the side seat cushion 6. Assuming that the side seat cushion 6 has moved downward by the same amount as the central seat cushion 11 in this lying state, the back surface (upper surface) of the central seat back 12 is relative to the back surface (upper surface) of the side seat back 7. Projecting upward. That is, since the vertical thickness including the side support portion 6b of the side seat 2 in the lying state of the side seat back 7 is thinner than the vertical thickness of the central seat 3 in the lying state of the center seat back 12, The vertical thickness of the seat 3 is greater than the vertical thickness of the side seat 2, that is, the back position of the center seat back 12 in the lying state is higher than the back face of the side seat back 7 in the lying state. Will be located. However, the side seat cushion 6 does not move downward in conjunction with the overturning of the side seat back 7, and only the central seat cushion 6 moves downward, and the amount of movement is the center seat in the above-described lying state. 3 and the side sheet 2 are set to be larger than the amount of difference in the vertical thickness. As a result, when the side seat back 7 and the center seat back 12 are in the lying state, the back surface of the center seat back 12 is positioned at a lower height than the back surface of the side seat back 7 (FIGS. 5 and 5). 7 and FIG. 8). The height position of the back surface of the bilateral seat back 7 in the lying state is substantially the same. Further, the back surface of the center seat back 12 in the lying state is at the same height as the top surface of the floor member 73. The back surface of the center seat back 12 in the lying state is at a height position different from the top surface of the floor member 73 as long as it is at a lower height position than the back surface of the side seat back 7 in the lying state. In this case, the height is preferably lower than the upper surface of the floor member 73.

  Here, the rotation shaft 7d serving as the rotation center of the side seat back 7 and the rotation shaft 12c serving as the rotation center of the central seat back 12 are located on the same straight line. Thereby, when the side seat back 7 and the center seat back 12 are in the lying state, the rear end portion of the back surface of the side seat back 7 is the rear end portion of the back surface of the center seat back 12 (in this embodiment, It is located at substantially the same height position as the entire back surface (see FIG. 5). Thereby, although the back surface of the side seat back 7 in the lying state is basically higher than the upper surface of the floor member 73, the rear end portion of the rear surface is substantially the same as the upper surface of the floor member 73. In the height position.

  The side seat back 7 and the center seat back 12 partition the compartment 71 and the cargo compartment 72 when they are in the standing state. Since the seat backs 7 and 12 can be independently put into a lying state, various seat arrangements are possible depending on the number of passengers, the size of the luggage loaded in the luggage compartment 72, and the like. The utility of the chamber 72 is improved. And when the side seat back 7 and the center seat back 12 are in a lying state, the back of the center seat back 12 is positioned at a lower height than the back of the side seat back 7, so the center seat When a long baggage is loaded on the back surface of the back 12, the long baggage is held by the side seat backs 7 on both sides so as not to move in the seat width direction (vehicle width direction). It becomes possible. Further, by lowering the back surface of the central seat back 12, it is easy to load a tall and small baggage (for example, a bicycle), and the baggage can be held using a side seat. Therefore, it is possible to load tall luggage stably. Furthermore, in the case of a large baggage, it is only necessary to load the baggage so as to straddle the back of both side seat backs 7, and the height positions of the backs of both side seat backs 7 in the lying state are the same. In this case, there is no problem even if the back surface of the central seat back 12 is lower than the height position. In addition, the rear end portions of the rear surfaces of all the seat backs 7 and 12 in the lying state are at substantially the same height as the upper surface of the floor member 73, so that a large baggage having a large width can be lifted on the floor member 73 without lifting it. It is possible to place it on the back surface of the both side seat back 7 while sliding. It is also possible to place a small load on the back of the central seat back 12 while sliding on the floor of the luggage compartment without lifting. Therefore, the usability of the back surface of the seat backs 7 and 12 in the lying state can be improved.

  Further, since only the center sheet 3 of the side sheets 2 and the center sheet 3 is configured to be able to be stored in the dive down, the cost and weight are considerably reduced as compared with the case where all the sheets 2 and 3 are configured to be capable of storing in the dive down. be able to.

  In the above embodiment, the center seat 3 is in contact with the side seats 2 on both sides, but the center seat 3 and the side seats 2 on both sides are not necessarily in contact with each other. May be spaced apart from each other.

  Further, in the above embodiment, when the seatbacks 7 and 12 are all lying down, the center seat cushion 11 is lowered so that the back surface of the center seat back 12 is positioned at a lower height than the back surface of the side seat back 7. 9, the central seat cushion 11 is moved downward so that the back surface of the central seat back 12 is positioned at substantially the same height as the back surface of the side seat back 7, as shown in FIG. 9. You may do it. In this case, the downward movement amount of the central seat cushion 11 is substantially the same as the amount of difference in the vertical thickness between the central seat 3 and the side seat 2 when the seat backs 7 and 12 are lying down. Thereby, it can prevent that the back surface of the center seat back 12 in the lying state protrudes from the back surface of the side seat back 7 in the lying state, and the usability of the back surfaces of the seat backs 7 and 12 in the lying state can be improved. Can be improved. Here, also when the back surfaces of all the seat backs 7 and 12 in the lying state are positioned at substantially the same height position, the rear end portions of the back surfaces of all the seat backs 7 and 12 are substantially the same height as the upper surface of the floor member 73. Preferably, the substantially entire back surface (except for the front end portion that is originally formed to protrude) is in a substantially horizontal state, and the substantially entire back surface is positioned at substantially the same height as the top surface of the floor member 73. It is even more preferable to position it in the position.

  Furthermore, in the said embodiment, the thickness of the center seat back 12 becomes thick by providing the armrest 19 in the center seat back 12, and the vertical direction thickness of the center seat 3 in the fall state of the center seat back 12 is the side seat. Although it is thicker than the vertical thickness of the side seat 2 in the lying state of the back 7, the armrest 19 is not essential, and the vertical thickness of the central seat 3 is larger than the vertical thickness of the side seat 2. It only has to be thick.

  Moreover, in the said embodiment, although the seat apparatus 1 shall be arrange | positioned just before the luggage compartment 72 of a vehicle (rear end part of the compartment 71), it is not restricted to this, For example, front and rear 3 row seats It may be arranged in a central row.

  The present invention relates to a pair of side seats spaced apart in the vehicle width direction on a floor panel that forms a floor of a vehicle cabin, and a center seat disposed between the pair of side seats. It is useful for a seat device for vehicles provided with the above, and particularly useful for a seat device disposed immediately before a cargo compartment of a vehicle.

DESCRIPTION OF SYMBOLS 1 Vehicle seat apparatus 2 Side seat 3 Center seat 6 Side seat cushion (Seat cushion of side seat)
7 Side seat back (side seat back)
7d Side seat back pivot 11 Central seat cushion (center seat cushion)
12 Center seat back (center seat back)
12c Rotating shaft of central seat back 21 Floor panel 23 Side seat cushion support portion 31a Article storage portion 41 Central seat cushion support portion 41a Front side support portion (interlocking mechanism)
41b Rear support (interlocking mechanism)
71 Car compartment 72 Cargo compartment

Claims (7)

A pair of side seats having a seat cushion and a seat back, which are spaced apart in the vehicle width direction on a floor panel forming a floor of a vehicle compartment of the vehicle, and disposed between the pair of side seats A center seat having a seat cushion and a seat back, two side seat cushion support portions for supporting the seat cushions of the both side seats on the floor panel, and the seat cushion of the center seat on the floor. A vehicle seat device comprising a central seat cushion support portion supported on a panel,
The side seats and the seat backs of the center seat are each configured to be switchable between a standing state and a lying state lying on a seat cushion corresponding to the seat back,
Of the side seat cushion support part and the center seat cushion support part, only the center seat cushion support part moves the seat cushion in conjunction with the switching from the standing state of the seat back corresponding to the seat cushion to the lying down state. It has an interlocking mechanism that moves to the side,
The vertical thickness of the central sheet in the lying state of the seat back of the central sheet is formed thicker than the vertical thickness of the side sheet in the lying state of the seat back of the side sheet,
The downward movement amount of the seat cushion of the center seat by the interlocking mechanism is set to be equal to or greater than the amount of difference in the vertical thickness between the center seat and the side seat in the lying state. Vehicle seat device. The vehicle seat device according to claim 1,
The amount of downward movement of the seat cushion of the center seat by the interlocking mechanism is set to be greater than the amount of difference in vertical thickness between the center seat and the side seat in the lying state, and the side seat And when the seat back of the center seat is in a lying state, the back of the seat back of the center seat is positioned at a lower position than the back of the seat back of the side seat. apparatus. The vehicle seat device according to claim 1 or 2,
The seat back of the central seat has an armrest,
The armrest is housed in the seatback and can be used as an armrest protruding from the seatback to the front of the seat in a retracted state in which one side of the stored armrest forms a part of the backrest surface of the seatback A vehicle seat device characterized in that it can be switched to a different use state. The vehicle seat device according to claim 3,
On the outer side in the vehicle width direction of at least one of the seat cushion and the seat back of the side seat, a side support portion that is bulged from the seating surface of the seat cushion or the backrest surface of the seat back is formed,
The vertical thickness including the side support part of the side seat in the lying state of the seat back of the side seat is thinner than the vertical thickness of the central sheet in the lying state of the seat back of the central seat. A vehicle seat device. In the vehicle seat device according to any one of claims 1 to 4,
The seat back of the side seat and the center seat can be switched between a standing state and a lying state by turning around the turning shaft extending in the seat width direction at the lower end when the standing seat is in the standing state. Has been
The pivot shafts of all the seat backs are located on the same straight line, and the rear end portions of the backs of all the seat backs in a lying state are located at substantially the same height position. apparatus. In the vehicle seat device according to any one of claims 1 to 5,
A vehicular seat device, characterized in that an article storage section for storing an article is formed below the seat cushion of at least one of the side seats and is formed in a box shape opening upward. In the vehicle seat device according to any one of claims 1 to 6,
The vehicle seat device is disposed immediately before the cargo compartment of the vehicle,
When the side seats and the seat backs of the center seat are in a lying state, the rear end portions of the backs of all the seat backs are located at substantially the same height as the floor of the cargo compartment. Vehicle seat device.

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