JP2007210476A - Vehicular seat device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To compactly store a vehicular seat when not used. <P>SOLUTION: This vehicular seat device includes a first pivoting portion 11 for swingably pivotally supporting a front end portion of a cushion material constituting a seat cushion 6 on a cushion frame, a second pivoting portion 43 for swingably pivotally supporting a tip end portion of a seat back 7 on the cushion frame 10. The cushion material 9 is swingably displaced by using the first pivoting portion 11 as a fulcrum and its rear end portion is positioned upward in an erected state, so that a storage space portion 39 of the seat back 7 is formed on the cushion frame 10. The seat back 7 is swingably displaced by using the second pivoting portion 43 as the fulcrum and the seat back 7 is stored in the storing space portion 39 in a forwardly inclining state, so that a placing portion placing the cushion member 9 in a collapsed state is formed on the seat back 7. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an improvement in a vehicle seat device including a seat cushion in which a cushion material is installed on a cushion frame and a seat back erected at the rear portion of the seat cushion.

  Conventionally, as shown in Patent Document 1 below, when the rear seat provided in the vehicle interior is not in use, the seat back is laid down on the rear seat so that they are superposed and compact, and on the seat cushion. 2. Description of the Related Art There is known a vehicle seat device that is configured to use a back surface of a seatback that has been laid down as a placement surface for an article.

Moreover, as shown in the following Patent Document 2, the seat cushion (sitting portion) and a seat back (back portion) that can be folded on the seat cushion are provided, and the seat back is folded on the seat cushion. In such a state, by accommodating these in a seat accommodating portion formed at the rear portion of the vehicle body, a flat floor surface is formed at the rear portion of the passenger compartment to effectively use the space.
Japanese Patent Laid-Open No. 9-323572 Japanese Patent Laid-Open No. 10-119613

  In the vehicle seat device disclosed in Patent Documents 1 and 2, the seat back is folded on the seat cushion when the vehicle seat is not used, and the back surface of the seat cushion is used as a mounting surface for the article. However, since the vehicle seat is accommodated in the seat accommodating portion formed in the rear portion of the vehicle body, there is an advantage that the vehicle interior space can be effectively used.

  However, since the cushion and the seat back of the vehicle seat seat are configured to ensure a sufficient thickness to improve sitting comfort and to have a high-class feeling, when the vehicle seat is not used, When the seat back is folded on the seat cushion, there is a problem that these vertical dimensions become large and cannot be made compact enough. Further, as shown in Patent Document 2, in order to accommodate the seat back of the vehicle seat in the seat storage portion in a state of being folded on the seat cushion, the seat storage portion is deepened and the bottom surface is lowered downward. Therefore, when the vehicle body moves up and down while the vehicle is running, there is a problem that stones or the like easily come into contact with the bottom surface of the seat housing portion.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a vehicle seat device that can store a vehicle seat compactly when not in use.

  The invention according to claim 1 is a vehicle seat device including a seat cushion in which a cushion material is installed on a cushion frame, and a seat back erected on the rear portion of the seat cushion, There is a first pivot part that pivotably supports the front end part on the cushion frame and a second pivot part that pivotally supports the base end part of the seat back on the cushion frame. Then, the cushioning material is oscillated and displaced with the first pivot portion as a fulcrum, and the rear end portion is positioned upward to form a seat back accommodating space portion on the cushion frame. The seat back is swung and displaced about the second pivot portion as a fulcrum, and the seat back is accommodated in the accommodation space portion in a forward tilted state. In which the cushion material is configured as mounting portion to be mounted is formed in the inclined state.

  According to a second aspect of the present invention, in the vehicle seat device according to the first aspect, the cushion material includes a seat plate portion that forms a seating surface of an occupant and a hanging portion that extends downward from a front end portion thereof. The lower end portion of the hanging portion is pivotally supported by the cushion frame via the first pivotal support portion.

  According to a third aspect of the present invention, in the vehicle seat device according to the first or second aspect, a cushion material support spring comprising a spring material extending so as to meander in a zigzag shape when viewed from above, and the cushion material support spring The cushion frame is provided with a spring elevating mechanism that moves the cushion up and down from the support position of the cushion material to the retracted position below.

  According to a fourth aspect of the present invention, in the vehicle seat device according to the third aspect, the base link is supported by the cushion frame, and the support link is provided with the holding portion of the cushion material support spring at the distal end. The spring raising / lowering mechanism is provided with a drive unit for raising and lowering the support link.

  According to a fifth aspect of the present invention, in the vehicle seat device according to any one of the first to fourth aspects of the present invention, the first pivotal support includes an extension bracket that is supported so as to protrude forward from the cushion frame. The cushion material is pivotally supported at the front end portion of the extension bracket so as to be swingable.

  According to a sixth aspect of the present invention, in the vehicle seat device according to any one of the first to fifth aspects, the distal end portion is pivotally supported by the cushion frame and the proximal end portion pivots on the floor portion of the vehicle body. The seat support mechanism includes a supported undulating link and a locking member that holds the cushion frame in the raised position by locking the undulating link in an upright state.

  The invention according to claim 7 is the vehicle seat device according to any one of claims 1 to 6, wherein the storage portion formed on the floor portion of the vehicle body, the seat cushion and the seat back are folded. And a support mechanism for supporting the vehicle seat in the storage portion so as to be retractable by swinging and displacing to the rear side of the vehicle body in a state where the bottom wall surface of the storage portion is In addition to being positioned below the lower end position, a display portion indicating the storage lower end position of the vehicle seat is formed on the side wall surface of the storage recess.

  According to the invention of claim 1, the accommodation space portion is formed by reducing the thickness of the cushion material, forming the accommodation space portion below the cushion material, and swinging and displacing the cushion material. The seat back is stored in the accommodation space, and the cushion material can be placed on top of the seat back, so that the vertical dimension of these can be prevented from increasing. The seat back and the cushioning material can be made compact, and the storage space can be reduced when the passenger seat is moved to the rear side of the vehicle body and stored in the storage portion at the rear of the vehicle body. .

  According to the second aspect of the present invention, the seat plate portion that forms the seating surface of the occupant and the hanging portion that extends downward from the front end portion thereof are provided, and the lower end portion of the hanging portion is cushioned by the first pivot portion. In normal use, the upper and front surfaces of the seat cushion are covered with the seat plate portion and the hanging portion to maintain a good seating comfort and appearance, and the seat back below the seat cushion. There is an advantage that a sufficient space can be secured.

  According to the third aspect of the present invention, the cushion material support spring made of a spring material meandering in a zigzag shape when viewed from above, and the spring for moving the cushion material support spring up and down from the cushion material support position to the lower retracted position. Since the raising and lowering mechanism is provided on the cushion frame, even when the seat plate portion is reduced in thickness, the cushioning support spring can be sufficiently secured using the elasticity of the cushion material support spring. When the occupant seat is not used, the cushion material supporting spring is displaced downward, so that a space for accommodating the seat back is sufficiently secured above the cushion seat supporting spring to obtain a compact storage state. is there.

  According to the invention which concerns on Claim 4, while the base end part is supported by the cushion frame, the support link in which the holding | maintenance part of the cushioning material support spring was provided in the front-end | tip part, the drive motor etc. which raise and lower this support link The drive member having the above is provided in the spring lifting mechanism, and the support link is raised and lowered by this drive unit, so that the cushion material support spring is easily moved up and down from the upper cushion material support position to the lower retraction position. Can be made.

  In the invention according to claim 5, the first pivotal support portion having an extension bracket supported so as to protrude forward from the cushion frame is provided, and the cushion material is pivotally supported at the front end portion of the extension bracket so as to be swingable. As a result, even when the total length of the seat back is larger than the total length of the seat cushion, the cushion material is swung with the first pivot portion as a fulcrum while the extension bracket protrudes forward from the cushion frame. By displacing, there is an advantage that a space for storing the seat back can be secured below the cushion material.

  According to the invention which concerns on Claim 6, the front-end | tip part is pivotally supported by the said cushion frame, The base end part is pivotally supported by the floor part of the vehicle body, and this undulation link is latched in an upright state. Since the seat support mechanism including the locking member that holds the cushion frame in the raised position is provided, the cushion frame is displaced and stored in the lower position when the vehicle seat is not used. Effective use can be achieved.

  In the invention according to claim 7, the bottom wall surface of the storage portion is positioned below the lower end position of the vehicle seat in the storage state, and the storage lower end position of the vehicle seat is disposed on the side wall surface of the storage portion. Whether or not it is necessary to remove the baggage when performing the storing operation of the occupant seat in a state where the baggage is stored in the storage unit. There is an advantage that the passenger can be recognized at a glance based on the display unit and the like.

  1 and 2 show a schematic configuration of a vehicle 1 including a vehicle seat device according to the present invention, and a front row seat 2 including a driver seat 2a and a passenger seat 2b is provided at the front of the vehicle interior of the vehicle 1. Is arranged. On the rear side of the front row seat 2, a middle row seat 3 comprising a left seat 3a and a right seat 3b, which are independent from each other, is disposed, and extends in the longitudinal direction of the vehicle body along the vertical slide rail 4 installed on the vehicle body floor portion. The middle row seat 3 is movably supported, and a bench seat type rear row seat 5 is disposed on the rear side of the middle row seat 3.

  The left and right side seats 3a, 3b of the middle row seat 3 have a seat cushion 6 on which an occupant sits, a seat back 7 erected at the rear part thereof, and a headrest 8 detachably attached to the upper end part thereof. is doing. As shown in FIG. 3, the seat cushion 6 includes a cushion material 9 formed mainly of a low-resilience urethane material or the like, and a cushion frame 10 that supports the cushion material 9. The cushion material 9 is formed in a substantially L-shaped cross section when viewed from the side by a seat plate portion 12 constituting a seating surface of the occupant and a hanging portion 13 extending downward from the front end portion thereof. A lower end portion of the portion 13 is pivotally supported by the front end portion of the cushion frame 10 via the first pivotal support portion 11.

  Further, as shown in FIG. 4, the cushion frame 10 has a pair of left and right side members 14 and a front wall plate 15 installed between the front end portions thereof. Between the left and right side members 14, a plurality of cushion material support springs 16 made of a so-called S spring material meandering in a zigzag shape when viewed from above are arranged at regular intervals in the front-rear direction. The seat plate 12 of the cushion material 9 is supported by the spring 16 from below. The cushion material support spring 16 is held at both left and right ends by a spring lifting mechanism 17 that moves up and down from the support position of the cushion material 9 to a lower retreat position.

  As shown in FIGS. 5 and 6, the spring elevating mechanism 17 has a lower part pivotally supported by the left and right side members 14 of the cushion frame 10 and a holding bracket 18 for the cushion material support spring 16 at the upper part. Are integrally provided, a connection link 20 that connects the front and rear support links 19 to each other, and a drive unit 21 that raises and lowers the support link 19. The drive portion 21 includes a worm gear 23 that meshes with a worm wheel portion 22 provided at a lower end portion of the support link 19 positioned in the front row, a rotary shaft 24 that rotates integrally with the worm gear 23, and the rotary shaft. A driven gear 25 composed of a bevel gear fixed to the tip end of 24, a pair of left and right drive gears 26 composed of a bevel gear meshing with the driven gear 25, and the drive gear 26 fixed to both ends, A drive shaft 27 that rotates integrally, a drive motor 28 that rotationally drives the drive shaft 27, and a power transmission gear mechanism 29 are provided.

  The drive force of the drive motor 28 is transmitted to the drive shaft 27 via the power transmission gear mechanism 29, whereby the drive shaft 27 is driven to rotate and the drive gear 26 and the driven gear 25 are The driving force of the driving shaft 27 is transmitted to the rotating shaft 24 through which the rotating shaft 24 is driven to rotate, and the driving force is transmitted to the worm wheel portion 22 through the worm gear 23. Correspondingly, the support links 19 in the foremost row are oscillated and displaced, and this oscillating displacement is transmitted to the support links 19 on the rear side via the connecting links 20, whereby each of the support links 19 is shown in FIG. 5 shifts from the standing state shown in FIG. 5 to a lying state described later (see FIG. 8), and the cushion material support spring 16 is moved up and down from the support position of the cushion material 9 to the retracted position below. .

  Each of the support links 19 has a larger amount of upward protrusion from the cushion frame 10 and is located at the front corresponding to the inclination angle of the seat plate portion 12 of the cushion material 9, and the lower end of each support link 19. The pivotal support portion is disposed on the rearwardly inclined line L. Further, the connecting link 20 is installed in a state inclined in the same direction as the inclined line L (rearward direction), and the inclination angle is set smaller than the inclined line L, so that it is almost horizontal. It is arranged at an angle.

  As shown in FIGS. 7 and 8, the first pivotal support portion 11 includes a slide support portion 30 made of a sleeve material or the like attached to the front end portion of the side member 14 of the cushion frame 10, and the slide support portion 30. And a connecting pin 33 for connecting the extension bracket 31 to the locked bar 32 embedded in the hanging portion 13 of the cushion material 9. Further, a shape-retaining member 34 made of a gate-shaped wire material or the like whose lower end portion is fixed to the locked bar 32 is embedded in the hanging portion 13 of the cushion material 9.

  The extension bracket 31 includes a slide bar 35 supported by the slide support portion 30 so as to be slidable in the front-rear direction of the vehicle body, a support plate 36 fixed to the tip portion of the extension bracket 31 and mounting bolts. And a stopper plate 37 attached to the rear end. Then, by sliding the slide bar 35 along the slide support portion 30, the stopper plate 37 abuts on the rear end surface of the slide support portion 30, and the support plate 36 of the extension bracket 31 moves to the front side of the cushion frame 10. The extension bracket 31 is displaced to a position where the slide bar 35 protrudes into the cushion frame 10 and a retracted position where the slide bar 35 enters the cushion frame 10.

  Further, the connecting pin 33 of the first pivotal support portion 11 includes a screw portion that is screwed into screw holes formed at the left and right end portions of the locked bar 32 and a support hole formed in the support plate 36. An insertion portion for insertion and a head portion for locking the support plate 36 to the locked bar 32 are provided. Then, while supporting the front end portion of the cushion material 9, specifically, the lower end portion of the hanging portion 13 with the connection pin 33, the cushion material 9 is swung with the connection pin 33 as a fulcrum as shown in FIG. By moving and moving, the cushion is supported by raising the cushion material support spring 16 held by the holding bracket 18 of the spring lifting mechanism 17 to the retracted position while raising the rear end portion of the cushion. An accommodation space 39 of the seat back 7 is formed on the frame 10.

  Below the cushion frame 10, a lateral slide rail 40 that supports the cushion frame 10 so as to be slidable in the vehicle width direction and a seat support mechanism 41 that supports the cushion frame 10 so as to be movable up and down are disposed. Further, the rear end portion of the side member 14 of the cushion frame 10 includes a mounting bracket 44 of a second pivotal support portion 43 that pivotally supports a proximal end portion of the seat back 7 and a second support mechanism 45 described later. An engaging arm 46 is provided at the rear end.

  The second pivotal support portion 43 includes a connecting bar 48 disposed between the mounting brackets 44 provided on the left and right sides of the rear end portion of the cushion frame 10, and a reclining mechanism 49 attached to the mounting bracket 44. A back frame 50 (see FIG. 4) disposed in the seat back 7 is connected to and supported by the rear end portion of the seat cushion 6 via the reclining mechanism 49. The seatback 7 is swingingly displaced with the rotation shaft provided in the reclining mechanism 49 as a fulcrum, so that the installation angle is adjusted.

  As shown in FIG. 8, in the state where the extension bracket 31 protrudes to the front side of the cushion frame 10, the cushion material 9 is oscillated and displaced to be in an upright state, and the cushion material support spring 16 is retracted. And with the headrest 8 removed from the seat back 7, the seat back 7 is swung to the front side of the vehicle body with the rotational axis of the reclining mechanism 49 as a fulcrum. The seat back 7 is accommodated in the forwardly inclined state as indicated by the phantom line in the formed accommodation space 39, and the cushion material 9 is placed on the back surface of the seat back 7 in a lying state. A placement part is formed.

  As shown in FIGS. 8 and 9, the seat support mechanism 41 that supports the cushion frame 10 to be movable up and down includes a slide member 51 that is slidably supported in the longitudinal direction of the vehicle body along the vertical slide rail 4, and An upper member 52 made of an angle material or the like disposed below the cushion frame 10, a pair of front and rear undulation links 53 having upper and lower ends pivoted on the upper member 52 and the slide member 51, and front and rear undulations A drive link 54 disposed between the links 53 and a undulation drive portion 55 for raising and lowering the drive link 54. The slide member 51, the upper member 52, the undulation link 53, and the drive link 54 include the cushion. They are arranged on the left and right sides of the frame 10 respectively.

  The drive link 54 has a lower end pivotally supported by the slide member 51 and an upper end supported slidably along a long hole 56 formed in the upper member 52. The undulation drive unit 55 includes a support bar 57 that connects upper ends of the left and right undulation links 53 positioned on the front side of the vehicle body, and upper ends of the left and right drive links 54 positioned on the rear side of the left and right undulation links 53. The driving bar 58 connects the driving bar 58 to each other, and the support bar 57 and the actuator 59 installed between the driving bar 58.

  The actuator 59 has a screw shaft having a distal end portion connected to the drive bar 58 and a case 61 having a proximal end portion connected to the support bar 57, and a drive motor ( The screw shaft 60 is rotationally driven by a screw feed device or the like that moves in and out of the case 61. When the drive bar 58 is pushed backward by operating the drive motor to project the screw shaft 60 from the case 61, the drive link 54 is in the standing state shown in FIG. 8, and the screw shaft 60 is moved to the case 61. When the drive bar 58 is moved forward by being pulled in, the drive link 54 is configured to be in a lying state as shown in FIG. In this way, the front and rear undulation links 53 are in the upright state while maintaining the parallel state, whereby the cushion frame 10 is held in the raised position, and the front and rear undulation links 53 are maintained in the parallel state. The cushion frame 10 is displaced to the lowered position by being in the lying state.

  A lateral slide rail 40 that supports the cushion frame 10 so as to be slidable in the vehicle width direction is installed between the left and right upper members 52. As shown in FIG. 2, the cushion frames 10 of the left and right side seats 3a, 3b of the middle row seat 3 at the normal positions separated from each other are slid inwardly of the vehicle body along the lateral slide rails 40, respectively. By displacing, the left and right side sheets 3a, 3b can be displaced to a close position close to each other. Further, the vertical slide rail 4 for slidably supporting the left and right side seats 3a and 3b in the longitudinal direction of the vehicle body is displaced from the normal use position shown in FIG. 2 to a position close to the storage portion 47 at the rear of the vehicle body. is set up.

  As shown in FIGS. 1 and 10, the rear row seat 5 includes a seat cushion 64 in which a cushion material 63 is installed on a cushion frame 62, and a seat back 65 erected upward from the rear portion of the seat cushion 64. The headrest 66 is detachably provided at the upper end portion thereof, the first pivot portion 67 is pivotally supported by the front end portion of the cushion material 63 on the cushion frame 62, and the seatback 65 is cushioned. It has a second pivotal support portion 68 formed of a reclining mechanism or the like that is pivotally supported by the frame 62 and supported so as to be swingable.

  The rear row seat 5 also has a cushion material support spring (not shown) having substantially the same configuration as the cushion material support spring 16 and the spring elevating mechanism 17 of the middle row seat 3, and the cushion material support spring can be raised and lowered. A supporting spring lifting mechanism is provided. The first pivot portion 67 of the rear row seat 5 is different from the first pivot portion 11 of the middle row seat 3 in that the extension bracket 31 or the like is not provided, and the front end portion of the seat plate portion 69 of the cushion material 63 is different. The lower end portion of the hanging portion 70 provided is directly supported by the front end portion of the cushion frame 62 via a connecting pin or the like.

  Then, the cushion member 63 is oscillated and displaced with the first pivot portion 67 as a fulcrum, and as shown in FIG. 11, the rear end portion of the cushion member 63 is positioned upward, and a spring not shown in the figure. The storage space 71 of the seat back 65 is formed on the cushion frame 62 and the headless 66 of the rear row seat 5 is removed by lowering the cushion material support spring to the retracted position via the lifting mechanism. The seat back 65 is accommodated in the accommodation space portion 71 in a forwardly inclined state by swinging and displacing the seat back 65 with the rotation axis of the second pivotal support portion (reclining mechanism) 68 as a fulcrum. On the back surface of 65, a mounting portion on which the cushion material 63 is mounted in a lying state is formed.

  At the rear end of the cushion frame 62, a first support mechanism 72 that supports the rear row seat 5 so that the rear row seat 5 can be stored in a storage portion 47 formed of a recessed portion formed in a floor portion located at the rear portion of the rear row seat 5. Is provided. The first support mechanism 72 includes a support arm 73 projecting downward from the left and right of the rear end portion of the cushion frame 62, and the left and right side wall portions (vehicle body) of the storage portion 47. And a pivot shaft 74 pivotally supported on the side wall portion. As shown in FIG. 12, in a state where the cushion material 63 and the seat back 65 of the rear row seat 5 are folded, the cushion material 63 and the seat back 65 are swung to the rear side of the vehicle body with the pivot shaft 74 as a fulcrum. By the dynamic displacement, the rear row sheet 5 is stored in the lower part of the storage part 47 in a vertically inverted state.

  The second support mechanism 45 that supports the middle row seat 3 so as to be retractable in the storage portion 47 includes the vertical guide rail 4 that slides and displaces the cushion frame 10 toward the rear side of the vehicle body, and the cushion frame 10. It has a seat support mechanism 41 that supports it, and a swing support portion that pivotally supports the middle row seat 3 that is slid and displaced toward the rear side of the vehicle body. The swing support portion includes the engagement arm 46 (see FIG. 9 and the like) projecting obliquely downward from the rear end portion of the side member 14 of the cushion frame 10, and the distal end portion of the engagement arm 46. And a solenoid 76 having a pivot shaft 74 (see FIG. 12) which is engaged with an engagement hole 75 formed in the above. As shown in FIG. 13, the solenoid 76 is attached to the outside of the left and right wall surfaces of the storage portion 47 and is also attached to the center portion of the front wall surface of the storage portion 47 via a bracket 77. By energizing these solenoids 76, the pivot shaft 74 projects from the solenoid 76 into the storage portion 47 and is engaged with the engagement hole 75 of the engagement arm 46.

  That is, as shown in FIG. 14, the cushion material 9 of the seat cushion 6 constituting the middle row seat 3 is placed on the seat back 7 and folded in the state where the two are folded along the vertical slide rail 4. After the middle row seat 3 is slid to the rear side of the vehicle body, the engagement arm is moved by displacing the cushion frame 10 of the middle row seat 3 to the lowered position by the seat support mechanism 41 (see FIG. 9 or the like). 46 engaging holes 75 are displaced to positions facing the installation portion of the pivot shaft 74.

  Then, in a state where the solenoid 76 is energized and the pivot shaft 74 is engaged with the engagement hole 75, the cushion material 9 and the seat back 7 are placed on the rear side of the vehicle body with the pivot shaft 74 as a fulcrum. As shown in FIG. 15, the middle row sheet 3 is moved up and down in the upper part of the storage part 47, that is, in the upper part of the rear row sheet 5 stored in the storage part 47, as shown in FIG. It is stored in an inverted state. In this embodiment, when the middle row seat 3 is stored in the storage portion 47, the vertical slide rail 4 installed at the rear of the vehicle body is detached from the vehicle body, and together with the middle row seat 3 is stored in the storage portion 47. To be stored in.

  In the vehicle seat apparatus including the middle row seat 3 including the seat cushion 6 in which the cushion material 9 is installed on the cushion frame 10 as described above and the seat back 7 erected on the rear portion of the seat cushion 6. The front end portion of the cushion material 9 is pivotally supported by the cushion frame 10 and supported so as to be swingable, and the base end portion of the seat back 7 is pivotally supported by the cushion frame 10 and swingable. The cushion frame 10 is provided with a second pivotal support portion 43 supported on the cushion frame 10, and the cushion material 9 is oscillated and displaced with the first pivotal support portion 11 serving as a fulcrum so that the rear end portion is positioned upward. An accommodation space 39 of the seat back 7 is formed on the upper side, and the seat back 7 is oscillated and displaced with the second pivotal support 43 as a fulcrum. Since the seat back 7 is accommodated in a forward tilted state, a mounting portion on which the cushion material 9 is placed in a lying state is formed on the seat back 7, so that the vehicle seat can be used when not in use. There is an advantage that the device can be stored compactly.

  That is, by reducing the thickness of the seat plate portion 12 of the cushion material 9 and forming the accommodation space portion 39 below it, the cushioning material 9 is oscillated and displaced so as to be in an upright state. Since the upper surface of 39 is opened and the seat back 7 is stored in the accommodation space 39 and the cushion material 9 is placed on top of the seat back 7, the vertical dimension thereof increases. Thus, the seat back 7 and the cushion material 9 can be made compact. Therefore, there is an advantage that the storage space can be reduced when the middle row seat 3 is moved to the rear side of the vehicle body and stored in the storage portion 47 at the rear of the vehicle body.

  Moreover, in the said embodiment, the cushioning material 9 is provided with the seat board part 12 which forms a passenger | crew's seating surface, and the drooping part 13 extended below from the front-end part, The lower end part of this drooping part 13 is said 1st. Since the pivot frame 11 is pivotally supported by the cushion frame 10, the seat cushion 6 is covered with the seat plate part 12 and the hanging part 13 in a normal state, so that the seating comfort and the appearance are improved. There is an advantage that a sufficient space for accommodating the seat back 7 can be secured below the seat back 7 while maintaining.

  Further, as shown in the above-described embodiment, the cushion material support spring 16 made of a spring material meandering in a zigzag shape as viewed from above, and the cushion material support spring 16 is moved up and down from the support position of the cushion material 9 to the retracted position below. When the cushion lifting and lowering mechanism 17 is provided on the cushion frame 10, even if the plate thickness of the seat plate portion 12 is reduced, the seat is seated using the elasticity of the cushion material support spring 16. Sufficient cushioning at the time can be secured. Moreover, when the occupant seat is not used, the cushion material support spring 16 is displaced downward, so that a sufficient space for accommodating the seat back 7 is secured above the cushion material support spring 16 to obtain a compact storage state. There is an advantage.

  For example, in the above embodiment, the base end portion is supported by the cushion frame 10, and the holding portion (holding bracket 18) of the cushion material support spring 16 is provided at the distal end portion, and the support link 19 and the support link 19 are raised and lowered. Since the drive unit 21 having the drive motor 28 and the like to be moved is provided in the spring lifting mechanism 17 and the support link 19 is automatically raised and lowered by the drive unit 21, the cushion material support spring 16 is moved upward. There is an advantage that it can be moved up and down easily and appropriately from the support position to the retreat position below.

  Instead of the above-described embodiment in which the support link 19 is automatically raised and lowered by the drive unit 21 having the drive motor 28 and the like, a sector gear formed at the lower end of the support link 19 as shown in FIG. The drive gear 82 meshing with 81 is manually rotated using the operation lever 83 to cause the support link 19 to swing and displace, and to raise and lower the support link 19 in a standing state. By providing a lock mechanism (not shown) including a mechanism or the like, the cushion material support spring 16 may be configured to be locked at the upper cushion material support position. According to this configuration, there is an advantage that the cushion material support spring 16 can be displaced up and down from the upper cushion material support position to the lower retraction position with a simple configuration without using the drive motor 28 and the like.

  Moreover, as shown in the said embodiment, while connecting the lower end pivotal support part of each support link 19 which comprises the spring raising / lowering mechanism 17 along the back-falling inclination line L, the front and back support links 19 are connected. When the inclination angle of the link 20 is set to be smaller than the inclination line L, the distance from the lower end pivot part of the support link 19 located at the front to the pivot point of the connection link 20 is the support link located on the rear side. Therefore, when the support links 19 are shifted to the lying down state by an electric operation using the drive unit 21 or a manual operation using the operation lever 83, the support links 19 positioned on the front side are As a result, the tilting displacement is larger than that of the support link 19 located on the rear side (see FIG. 8).

  Accordingly, the amount of upward protrusion of the support link 19 positioned forward from the cushion frame 10 corresponds to the inclination angle of the seat plate 12 of the cushion material 9 installed at an angle close to the horizontal as described above. In the vehicular seat that is set to be larger than the rear one, the cushion material supporting spring 16 located on the front side is largely moved downward to enter the accommodation space 39 formed in the upper portion thereof. There is an advantage that the seat back 7 can be accommodated efficiently.

  In place of the above embodiment in which the holding bracket 18 of the cushion material support spring 16 is integrally formed at the upper end portion of the support link 19, the rear portion is pivoted at the upper end portion of the main support link 84 as shown in FIG. A separate support bracket 85 is provided, and a sub-support link 86 that supports the front portion of the support bracket 85 is provided. The parallel link mechanism including the main support link 84 and the sub-support link 86 described above is used. The holding bracket 85 may be configured to be displaced up and down while being supported. In this case, the cushion material support spring 16 is moved from the upper cushion material support position to the lower retraction position while maintaining the installation angle of the cushion material support spring 16 held by the holding bracket 85 constant. There is an advantage that it can be moved up and down.

  Further, in place of the above-described embodiment in which a plurality of support links 19 for individually supporting a plurality of cushion material support springs 16 are provided, a pair of support frames are disposed along the left and right sides of the cushion frame 10. The support frame may have a structure in which the left and right ends of each cushion material support spring 16 are held. Then, the cushion frame support springs 16 may be integrally moved up and down by moving the support frame up and down manually or electrically along a guide bar or the like.

  Furthermore, in the said embodiment, the said 1st pivot part 11 which has the extension bracket 31 supported so that it could protrude ahead from the cushion frame 10 was provided, and the cushioning material 9 can be rock | fluctuated in the front-end part of this extension bracket 31 Since it is configured to be pivotally supported, even when the total length of the seat back 7 is larger than the total length of the seat cushion 6, the first pivotal support portion is in a state in which the extension bracket 31 protrudes forward from the cushion frame 10. By swinging and displacing the cushion material 9 with the fulcrum 11 as a fulcrum, there is an advantage that a space for storing the seat back 7 can be secured below the cushion material 9.

  Further, as shown in the above embodiment, the distal end portion is pivotally supported by the cushion frame 10 and the base end portion is pivotally supported by the slide member 51 supported by the floor portion of the vehicle body, specifically, the vertical slide rail 4. And a latch member that holds the cushion frame 10 in the raised position by latching the undulating link 53 in an upright state, specifically, the drive link 54 and the undulating drive unit 55. Since the support mechanism 41 is provided, when the vehicle seat composed of the middle row seat 3 is not used, the cushion frame 10 is displaced to the lower position and stored, so that the vehicle interior space can be effectively used.

  In the above embodiment, in the rear row seat 5 including the seat cushion 64 in which the cushion material 63 is installed on the cushion frame 62 and the seat back 65 erected in the rear part of the seat cushion 64, the cushion material is used. A first pivot portion 67 that pivotally supports the front end portion of 63 on the cushion frame 62 and swingably supports, and a first end portion of the seat back 65 pivotally supported on the cushion frame 62 and swingably supported. Two pivot portions 68, and the cushion material 63 is oscillated and displaced with the first pivot portion 67 as a fulcrum so that the rear end portion is positioned upward, so that the seat back is placed on the cushion frame 62. 65 accommodating space 71 is formed, and the seat back 7, 65 is swung and displaced with the second pivotal support 68 as a fulcrum. Since the seat back 65 is housed in the forward tilted state in 1 so that a placing portion on which the cushion material 63 is placed in a lying state is formed on the seat back 65, the rear row seat 5 When not in use, there is an advantage that it can be stored compactly in the same manner as the middle row sheet 3.

  In particular, as shown in the above-described embodiment, the storage portion 47 is formed on the floor portion of the vehicle body located on the rear side of the rear row seat 5 in the vehicle in which the front and rear rows of passenger seats 2 to 4 are disposed in the vehicle interior. At the same time, the rear row seat 5 is storably supported in the storage portion 47 by swinging and displacing the cushion member 63 and the seat back 65 of the rear row seat 5 to the rear side of the vehicle body in a folded state. By sliding the support mechanism 72, the cushion material 9 of the middle row seat 3 and the seat back 7 to the rear side of the vehicle body in a folded state, the rear row seat 5 stored in the storage portion 47 is placed on the rear row seat 5. A second support mechanism 45 including a hinge mechanism or the like that supports the middle row sheet 3 so that the middle row sheet 3 can be stored, and configured to store both the middle row sheet 3 and the rear row sheet 5 in the storage unit 47. Is By all sheets 3, 4 of non-front-row seat 2 and the storage state in response to requirements, the rear portion of the front row seat 2, can be advantageously ensured more space.

  The rear row shown in FIG. 18 is used in a vehicle in which three rows of passenger seats 2 to 4 are arranged in the vehicle interior or a vehicle without a middle row seat in which a rear row seat 5 is arranged behind the front row seat 2. In the state where the seat back 65 is stored below the cushion material 63 of the seat cushion 64 from the use state of the seat 5, by swinging and displacing them to the rear side of the vehicle body, as shown in FIG. A support mechanism 72 that supports the rear row seat 5 so as to be retractable is provided in the storage portion 47, and the bottom wall surface of the storage portion 47 is positioned below the lower end position of the vehicle seat (rear row seat 5) in the storage state. In addition, the display unit 87 may be provided on the side wall surface of the storage unit 47. The display unit 87 may be a line mark or a colored portion indicating the storage lower end position of the vehicle seat. In the case of such a configuration, when the storage operation of the rear row sheet 5 is performed in a state where the package is stored in the storage unit 47, whether or not the package needs to be removed is indicated by the display unit 87 or the like. Since the passenger can be recognized at a glance based on the above, there is an advantage that convenience is improved.

It is a side view which shows the vehicle body structure provided with the vehicle seat apparatus which concerns on this invention. It is a top view which shows the vehicle body structure provided with the vehicle seat apparatus which concerns on this invention. It is side surface sectional drawing which shows embodiment of the vehicle seat apparatus which concerns on this invention. It is a perspective view which shows specific structures, such as a seat frame and a cushion material support spring. It is a perspective view which shows the specific structure of a spring raising / lowering mechanism. It is a top view which shows the specific structure of the drive part of a spring raising / lowering mechanism. It is a perspective view which shows the specific structure of a cushion material and a 1st pivot part. It is side surface sectional drawing which shows the state which raised the cushion material. It is side surface sectional drawing which shows the state which folded up the cushion material and the seat back. It is side surface sectional drawing which shows the specific structure of a back row sheet | seat. It is side surface sectional drawing which shows the state which brought forward the seat back of the back row sheet. It is side surface sectional drawing which shows the state which stored the back row sheet | seat in the storage part. It is a front view which shows the specific structure of a 2nd support mechanism. It is side surface sectional drawing which shows the state which inserted the pivot shaft of the 2nd support mechanism in the engagement hole. It is side surface sectional drawing which shows the state which stored the middle row sheet | seat and the back row sheet | seat in the storage part. It is a perspective view which shows another specific example of a spring raising / lowering mechanism. It is a perspective view which shows another specific example of a spring raising / lowering mechanism. It is side surface sectional drawing which shows another embodiment of the vehicle seat apparatus which concerns on this invention. It is side surface sectional drawing which shows the state which stored the back row sheet | seat in the storage part.

Explanation of symbols

3 Middle row seats (passenger seats)
5 Rear row seat (occupant seat)
6,64 Seat cushion 7,65 Seat back 9,63 Cushion material 10,62 Cushion frame 11,67 First pivot portion 12,69 Seat plate portion 13,70 Suspended portion 16 Cushion material support spring 17 Spring lifting mechanism 19 Support link 21 drive part 31 extension bracket 39,71 accommodation space part 47 storage part 43,68 second pivot part 53 undulation link (locking member)
55 Undulating drive (locking member)
72 Support mechanism 87 Display section

Claims (7)

  A vehicle seat device comprising a seat cushion in which a cushion material is installed on a cushion frame and a seat back erected at the rear of the seat cushion, wherein the front end of the cushion material is pivotally supported by the cushion frame. And a second pivot part that pivotally supports the base end portion of the seat back on the cushion frame and pivotably supports the first pivot part. The cushion material is oscillated and displaced at the fulcrum, and the rear end portion is positioned in an upright state, whereby a seat back accommodating space is formed on the cushion frame, and the second pivot is supported at the fulcrum. The seat back is tilted forward and the seat back is housed in a tilted state in the housing space, so that the cushion material is in a fallen state on the seat back. In the vehicle seat device characterized by being configured as mounting portion to be mounted is formed.   The cushion material has a seat plate portion that forms a seating surface of the occupant and a hanging portion that extends downward from the front end portion thereof, and a lower end portion of the hanging portion pivots on the cushion frame via the first pivot support portion. The vehicle seat device according to claim 1, wherein the vehicle seat device is supported.   The cushion frame includes a cushion material support spring made of a spring material extending so as to meander in a zigzag shape when viewed from the plane, and a spring lifting mechanism for moving the cushion material support spring up and down from the support position of the cushion material to a lower retracted position. The vehicle seat device according to claim 1, wherein the vehicle seat device is provided.   The spring lifting mechanism includes a support link in which a base end portion is supported by a cushion frame and a holding portion for a cushion material support spring is provided at a distal end portion, and a drive unit for raising and lowering the support link. The vehicular seat device according to claim 3 characterized by things.   The first pivot support portion has an extension bracket supported so as to protrude forward from the cushion frame, and a cushion material is pivotally supported at the front end portion of the extension bracket so as to be swingable. The vehicle seat device according to any one of 1 to 4.   An undulating link whose tip is pivotally supported by the cushion frame and whose base end is pivotally supported by the floor of the vehicle body, and a mechanism for holding the cushion frame in the raised position by locking the undulating link in an upright state. The vehicle seat device according to any one of claims 1 to 5, further comprising a seat support mechanism including a stop member.   A storage portion formed on the floor portion of the vehicle body, and a support mechanism that supports the vehicle seat in the storage portion so that the vehicle seat can be stored in the storage portion by swinging and displacing to the rear side of the vehicle body with the seat cushion and the seat back folded. The bottom wall surface of the storage portion is positioned below the lower end position of the vehicle seat in the storage state, and the storage lower end position of the vehicle seat is indicated on the side wall surface of the storage recess. The vehicle seat device according to claim 1, further comprising a display unit.

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