JP2005255089A - Seat for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat for a vehicle allowing smooth mounting of a seat belt after it becomes from a storage state to a seating state. <P>SOLUTION: A partial component body 63 of a seat belt device 60 is supported by a slider 32 slidably supported in the slider 32 by a slide rail 31 laid on a vehicle body floor 20. The seat 11 for the vehicle can change between the storage state where a seat back 13 is dropped into a lower floor 21 of the vehicle body floor 20 in a forward tilted state thereof and the seating state where the seat back 13 is removed from the lower floor 21 in an erected state thereof. The seat has a holding tool 80 for making the attitude of the partial component body 63 follow the state change from the storage state to the seating state. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vehicle seat capable of dive-down storage that is dropped onto a lower floor.

As a technology related to vehicle seats that can be stored in a dive-down space that is dropped into a lower floor, after the seat back is moved forward to the seat cushion side, the attachment / detachment device provided on the lower rear side of the seat cushion is removed from the floor. In some cases, the seat is dropped onto a lower floor by swinging forward with the guide of an arm provided on the lower side of the front portion of the seat cushion (see, for example, Patent Document 1).
JP 2003-118446 A

  By the way, the vehicle seat is not allowed to slide back and forth in a seated state in which the seat back is raised and comes out of the lower floor. However, it is preferable that the vehicle seat is slidable because the usability is further improved. When the slidable is made in this way, it is conceivable to support the buckle of the seat belt device on the slider guided by the slide rail in order to properly arrange the buckle of the seat belt device regardless of the slide position. . When the buckle is supported by the slider in this way, for example, when the buckle is arranged on the side of the seat back so that it does not get in the way when the vehicle seat is in the stowed state, the vehicle seat is then seated. When the vehicle is in the state, the seat occupant cannot smoothly put on the seat belt with the buckle on the lower side.

  Accordingly, an object of the present invention is to provide a vehicle seat that can be smoothly fitted with a seat belt after the seated state is changed to the seated state.

  To achieve the above object, the invention according to claim 1 is directed to a slide rail (for example, the slide rail 31 in the embodiment) laid on a vehicle body floor (for example, the vehicle body floor 20 in the embodiment) and a slider (for example, the slider in the embodiment). 32) is slidably supported by the slider, and one engagement portion (for example, the buckle 62 in the embodiment) of the attachment / detachment mechanism (for example, the attachment / detachment mechanism 61 in the embodiment) of the seat belt device (for example, the seat belt device 60 in the embodiment) is supported by the slider. And a lower floor (for example, in the embodiment) of the vehicle body floor in a state in which the seat back (for example, the seat back 13 in the embodiment) is tilted forward. Storage stored in the lower floor 21) Vehicle seat (for example, the vehicle seat 11 in the embodiment) that is changeable between a seated state in which the seatback is raised and the seated state in which the seatback is raised, and the seating state is changed from the stored state to the seated state. A holding tool (for example, the holding tool 80 in the embodiment) for causing the posture of the partial structural body to follow the state change to the state is provided.

  The invention according to claim 2 is the invention according to claim 1, wherein the holding device causes the posture of the partial structural body when in the seated state to rise compared to the posture when in the stored state. It is characterized by.

  The invention according to claim 3 is the invention according to claim 1 or 2, wherein the holder has an annular member that can expand and contract (for example, the annular member 82 in the embodiment), and the annular member is hung on the partial structure. It is characterized by having.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the partial structure includes a boot (for example, the boot 76 in the embodiment) surrounding the webbing (for example, the webbing 70 in the embodiment). And the support is supported by these boots and webbing.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the seat is pivotally supported by the seat back and extends downward from the seat back and then extends forward. The holder is attached to a cushion frame (for example, the seat cushion frame 29 in the embodiment).

  According to the first aspect of the invention, since the partial structural body is made to follow the state change from the stored state to the seated state by the holder, for example, the partial structural body is raised when the seated state is changed to the seated state. Thus, the seat belt can be smoothly mounted even when the seating state is reached after the partial structural body is arranged on the side of the seat back so that it does not get in the way when in the stowed state.

  According to the second aspect of the present invention, since the partial structural body rises following the state change from the stored state to the seated state by the holder, the partial structural body is seat-backed so that it does not get in the way when in the stored state. The seat belt can be mounted smoothly even when the seat belt is placed after being placed on the side of the seat.

  According to the third aspect of the present invention, since the holder is hung on the partial structure in the expandable and contractable annular member, the holder can have a simple structure, and the partial structure can be engaged with the holder with a simple operation. Can be made.

  According to the invention which concerns on Claim 4, since a partial structure supports a holder with the webbing and the boot which surrounds this, a holder can be reliably engaged with a partial structure.

  According to the fifth aspect of the present invention, since the retainer is attached to the seat cushion frame that is pivotally supported by the seat back, the seat back is moved forward to bring the seat cushion into the stowed state. When the frame is moved forward and downward, the holding tool also moves forward and downward to bring the partial structural body into a posture along the front in the downward direction, and the partial structural body is housed in the side of the seat cushion. On the other hand, when the seat cushion frame moves rearward and upward as the seat back rises in order to be seated, the retainer also moves rearward and upward to move the partial structural body backward and upward. The body gets up. In this way, the partial structural body can always be in the optimum posture in conjunction with the state change between the stored state and the seated state.

  An embodiment of a vehicle seat of the present invention will be described below with reference to the drawings. Note that the front, rear, left and right used in the following description are front, rear, left and right when the vehicle is moving forward.

  The vehicle seat 11 according to the present embodiment is provided for a rear seat such as a second row or a third row from the front, for example, and as shown in FIG. 1, on the rear end side of the seat cushion 12 and the seat cushion 12. The seat back 13 and the headrest 14 provided on the opposite side of the seat cushion 12 of the seat back 13 are provided.

  As shown in FIG. 2, the vehicle seat 11 is provided on a stepped floor 23 formed by adjoining a front lower floor 21 in the vehicle body floor 20 and a rear higher floor 22 higher than the lower floor 21. Yes.

  The seat back 13 of the vehicle seat 11 includes a seat back pad 25 that has cushioning properties and supports the back of the occupant, and a seat back frame 26 that holds the seat back pad 25.

  The seat cushion 12 of the vehicle seat 11 includes a seat cushion pad 28 that has cushioning properties and supports the occupant's buttocks, and a seat cushion frame 29 that holds the seat cushion pad 28.

  A pair of slide rails 31 extending in the front-rear direction are provided on the high floor 22 so as to be separated from each other in the left-right direction. The slide rails 31 hold sliders 32 so as to be slidable only in the front-rear direction. The slide rail 31 and the slider 32 constitute a slide mechanism 33 that allows the vehicle seat 11 to slide.

  The seat back frame 26 includes a back frame main body 36 that mainly holds the seat back pad 25, and left and right sides on one side in the length direction of the back frame main body 36, and the outer side along the length direction from the back frame main body 36. A pair of support portions 37 (only one of them is shown) fixed so as to extend to each other, and support shafts 38 extending in the left-right direction are respectively provided on the extending distal end sides of these support portions 37. Yes. The seat back frame 26 is rotatably supported by the sliders 32 on both sides via these support shafts 38. Thereby, the seat back frame 26, that is, the seat back 13 including the seat back frame 26, can be moved forward from an upright state substantially along the vertical direction by rotating around the support shaft 38 with respect to the slider 32. In other words, the seat back 13 is pivotally supported by the slider 32 that is guided and slid by the slide rail 31 so as to be able to move forward.

  Note that a reclining mechanism 41 that can be fixed and released to the slider 32 and the support portion 37 of the seat back frame 26 by being operated by a reclining lever (not shown) so that the seat back frame 26, that is, the seat back 13, stands up with respect to the slider 32. Is provided.

  Support shafts 42 are provided along the left-right direction at positions that are a predetermined amount above the support shafts 38 of both support portions 37 of the seat back frame 26 in the standing state. A rear portion of the frame 29 is rotatably supported by the support portion 37. That is, the seat cushion frame 29 extends substantially linearly forward from the base end side extending portion 44 that obliquely extends downward and forward from each support shaft 42 and from the distal end portion of the base end side extending portion 44. A pair of extending portions 46 (only one of them is shown) each having a leading end side extending portion 45 to be extended, and a bridge portion 47 along the left-right direction that connects the extending leading end sides of the extending portions 46 to each other. It has a U-shape in plan view. The seat cushion frame 29 supports the seat cushion pad 28 slightly biased toward the installation portion 47 side.

  A pair of left and right (only one shown) brackets 49 are attached to the erection portion 47 at the front end of the seat cushion frame 29, and the support shafts 50 are provided along the left and right directions. One end of a link arm 51 is rotatably supported on each of the support shafts 50. A support shaft 52 extending in the left-right direction is fixed to the distal end side of each link arm 51, and the link arm 51 is connected to the lower floor 21 near the end on the high floor 22 side via these support shafts 52. A rotation support portion 53 that is rotatably supported is attached.

  As a result, the seat cushion frame 29 is pivotally supported by the seat back frame 26 of the seat back 13 and has a shape that extends downward from the seat back 13 and then extends forward. A blindfold plate 55 that can contact the back surface of the seat back 13 of the vehicle seat 11 is swingably connected to the rear compartment chamber 56 behind the vehicle seat 11 at the rear side of the vehicle seat 11. ing.

  The slider 32 is provided with a lock member 58 that moves up and down by an operation of a slide lever (not shown). The slide rail 31 has a lock hole 59 into which the lowered lock member 58 can be fitted. A plurality are formed at a predetermined pitch in the direction. When the lock member 58 is removed from the lock hole 59, the slider 32, that is, the vehicle seat 11 can slide with respect to the slide rail 31, and when the lock member 58 is fitted into the lock hole 59, the slider 32, that is, the vehicle seat. 11 is slide-locked with respect to the slide rail 31.

  As shown in FIG. 1, a partial structure 63 including a buckle 62 that constitutes one of the detachable mechanisms 61 of the seat belt device 60 that can be attached to and detached from each other is supported on the outside of each slider 32. Here, the vehicle seat 11 is provided at a central position in the vehicle width direction, and the seat belt device 60 is attached to a webbing 64 and a roof panel 65 as shown in FIG. The partial structure 69 which has the retractor 66 which winds up the side, the tongue plate 67 connected with the other end side of the webbing 64, and the tongue plate 68 movably provided in the intermediate position of the webbing 64 by passing the webbing 64 And a partial structure 63 that is attached to one slider 32 and to which the tongue plate 67 is detachably attached, and a partial structure 63 that is attached to the other slider 32 and to which the tongue plate 68 is detachably attached. ing. The tongue plates 67 and 68 together constitute the other of the attachment / detachment mechanism 61.

  Both the partial structural bodies 63 are substantially the same, and as shown in FIGS. 3 and 4, a webbing 70 having a short length and a mounting bracket 71 fixed to one end side of the webbing 70 and attached to the slider 32. And a buckle (engagement portion) 62 provided on the other end side of the webbing 70 to which the corresponding tongue plates 67 and 68 are detachably attached.

  Here, the mounting bracket 71 is mounted on the slider 32 via a mounting shaft 74 extending in the vehicle width direction shown in FIG. 2, and is rotatable about the mounting shaft 74. As a result, the partial structure 63 is rotatable about the mounting shaft 74 along the vehicle width direction as a whole.

  As shown in FIGS. 3 and 4, the webbing 70 of the partial structure 63 has a flat cylindrical boot 76 for keeping the shape straight and preventing twisting. It is provided so as to surround a part of the periphery on the 70 side. A notch 77 is formed on the buckle 62 side on the slider 32 side in the vehicle width direction of the boot 76, and a part of the webbing 70 on the buckle 62 side is exposed to the outside by the notch 77.

  And in this embodiment, as shown in FIG. 2, it is a part in the position between the base end side extension part 44 and the front end side extension part 45 which is an intermediate position of both the extension parts 46 of the seat cushion frame 29. Each holding tool 80 for holding the structure 63 is provided (only one is shown). As shown in FIGS. 3 and 4, the holder 80 has an attachment member 81 attached to the seat cushion frame 29 and an expandable and contractible annular member 82 supported by the attachment member 81.

  A mounting hole 84 is formed in the mounting member 81, and as shown in FIG. 5, a bolt 85 inserted through the mounting hole 84 is screwed into a screw hole 86 of the seat cushion frame 29, so that the mounting member 81. Is attached to the seat cushion frame 29.

  The annular member 82 is a string-like member made of an elastic material such as rubber, and has an annular shape when both ends are supported by the mounting member 81 in a close state.

  As shown in FIG. 5, the holding member 80 is attached to the seat cushion frame 29 by the attachment member 81. In this state, the annular member 82 buckles inward as shown in FIG. The webbing 62 is passed through the buckle 62 and inserted into the gap between the buckle 62 and the boot 76, and the webbing 70 is hung on the side of the buckle 62 wider than this. At this time, the mounting member 81 side of the annular member 82 comes out of the notch 77 of the boot 76. As described above, the expandable and retractable annular member 82 of the holder 80 is hung on the partial structural body 63, and the partial structural body 63 uses the boot 76 and the webbing 70 surrounding the webbing 70 to form the annular member 82 of the holder 80. To support.

Next, the operation of the vehicle seat 11 will be described.
For example, as shown in FIG. 2, in the seated state in which the seat back frame 26, that is, the seat back 13 is seated by the reclining mechanism 41 and can be seated by an occupant fixed to the slider 32, the seat back frame 26 is pivotally supported by the seat back frame 26. The holder 80 of the seat cushion frame 29 is positioned above the attachment shaft 74 of the partial structure 63. As a result, each partial structure 63 supported at the distal end side by each holder 80 is attached to the attachment shaft 74. The buckle 62 extends upward while tilting slightly forward from 74, and the buckle 62 is positioned above the seat cushion 12 in front of the seat back 13. For this reason, in this seated state, the occupant can smoothly attach the tongue plates 67 and 68 of the partial structure 69 of the seat belt device 60 to the partial structure 63 on both sides, so that the seat belt device 60 can be mounted satisfactorily.

  Further, in this seated state, the vehicle seat 11 can be slid back and forth by operating a slide lever (not shown). However, as shown in FIGS. The attached partial structure 63 and the holder 82 also move together. Therefore, in any slide position, the position of the partial structure 63 is substantially constant with respect to the vehicle seat 11, and the passenger can satisfactorily wear the seat belt device 60.

  For example, when the reclining lever (not shown) is operated in a state where the vehicle seat 11 is located at the front end position of the slide rail 31, and the reclining mechanism 41 releases the fixation of the seat back frame 26 to the slider 32, the standing state is established. The seat back frame 26, that is, the seat back 13 can be moved forward. When the seat back 13 is moved forward about the support shaft 38, the support shaft 42 located above the support shaft 38 in the seat back 13 from the state shown in FIG. 6 as shown in FIG. As a result, the seat cushion frame 29 is connected to the front support shaft 50 so that the rear side connected to the support shaft 42 is moved to the front side and the lower side. By tilting the link arm 51 forward with the support shaft 52 supported by the rotation support portion 53 as the center, the front side is also moved to the front side and the lower side. As a result, the seat cushion frame 29 is moved to the front side and the lower side as a whole, the seat cushion pad 28 to be held is also moved to the front side and the lower side, and the seat cushion frame 29 is brought into the storage state dropped into the lower floor 21 side.

  At this time, the seat back 13 overlaps with the seat cushion 12 and the upper surface becomes substantially horizontal. In accordance with this, the blindfold plate 55 in contact with the back surface of the seat back 13 of the vehicle seat 11 is also substantially horizontal, and the storage room floor 56, the blindfold plate 55, and the vehicle seat 11 are substantially flat.

  Here, when the state is changed from the seated state to the stored state, the holder 80 attached to the seat cushion frame 29 is also moved together with the seat cushion frame 29 to the front side and the lower side. As a result, the partial structural body 63 whose front end side, that is, the buckle 62 side is supported by the holding tool 80 is also moved from the mounting shaft 74 along the substantially horizontal direction as a result of the front end side being pulled by the holding tool 80 and moved to the front side and the lower side. It will be in a state of extending forward. Thus, the partial structural body 63 is accommodated so as to be positioned below the upper surface of the seat back 13 on the side of the seat back 13 as a whole so as not to protrude upward from the vehicle seat 11. That is, the holder 80 causes the posture of the partial structure 63 to follow the state change from the seated state to the stored state.

  On the contrary, when the seat back 13 is rotated around the support shaft 38 from this stored state, the seat back 13 is moved forward from the support shaft 38 in the seat back 13 as shown in FIG. The support shaft 42 that has been positioned moves to the rear side and the upper side, and as a result, the seat cushion frame 29 is moved to the rear side and the upper side from the rear side connected to the support shaft 42, and the front support shaft The link arm 51 that is pivotally connected to the shaft 50 is raised about the support shaft 52 supported by the rotation support portion 53, so that the front side is also moved rearward and upward. As a result, the seat cushion frame 29 is moved rearward and upward as a whole, and the seat cushion pad 28 to be held is also moved rearward and upward. As a result, the vehicle seat 11 is moved as shown in FIG. Get out of the lower floor 21 and sit down.

  Here, when the state is changed from the stored state to the seated state, the holder 80 attached to the seat cushion frame 29 is also moved rearward and upward together with the seat cushion frame 29. As a result, the partial structure 63 whose tip side, that is, the buckle 62 side is supported by the holding tool 80 is also tilted slightly forward from the mounting shaft 74 as a result of the tip side being pulled by the holding tool 80 and moved rearward and upward. It will be in the state of extending upwards. That is, the holder 80 causes the posture of the partial structure 63 to follow the state change from the stored state to the seated state. Specifically, the holder 80 has the partial structure 63 of the partial structure 63 when in the seated state. Raise your posture compared to the posture when it is in the stowed state. Thereby, the partial structure 63 positions the buckle 62 on the front side of the seat back 13 and on the upper side of the seat cushion 12. Therefore, the occupant can smoothly attach the tongue plates 67 and 68 of the seat belt device 60 to the partial structural body 63, and the seat belt device 60 can be mounted satisfactorily.

  As described above, the vehicle seat 11 of the present embodiment is slidably supported by the slider 32 on the slide rail 31 laid on the vehicle body floor 20, and the partial structure 63 of the seat belt device 60 is attached to the slider 32. At the same time, between the storage state in which the seat back 13 is dropped and stored in the lower floor 21 of the vehicle body floor 20 and the seated state in which the seat back 13 is raised and the seat back 13 is pulled out from the lower floor 21. The state can be changed.

  According to the vehicle seat 11 of the present embodiment described above, the holding member 80 allows the partial structural body 63 to follow the state change from the stored state of the vehicle seat 11 to the seated state. Since the partial structural body 63 rises following the state change from the stored state of the vehicle seat 11 to the seated state by the holder 80, the partial structure is configured so as not to obstruct the vehicle seat 11 when the vehicle seat 11 is stored. Even when the vehicle seat 11 is in the seated state after the body 63 is disposed on the side of the seat back 13, the seat belt device 60 can be mounted smoothly.

  More specifically, since the retainer 80 is attached to the seat cushion frame 29 that is pivotally supported by the seat back 13, the seat back 13 is moved forward because the vehicle seat 11 is in the retracted state. As a result, when the seat cushion frame 29 is moved forward and downward, the retainer 80 also moves forward and downward, so that the partial structure 63 is in a posture along the front in the downward direction. 13 sideways. On the other hand, when the seat cushion frame 29 moves rearward and upward due to the seat back 13 rising because the vehicle seat 11 is in the seated state, the retainer 80 also moves rearward and upward to move the distal end side of the partial structure 63. The partial structural body 63 is raised by moving backward and upward. In this way, the partial structural body 63 can always be in the optimum posture in conjunction with the state change between the storage state and the seating state of the vehicle seat 11. Further, even when the vehicle seat 11 is folded and stored, the partial structure 63 is not sandwiched.

  Further, since the holder 80 is hung on the partial structure 63 in the ring-shaped member 82 that can be expanded and contracted, the holder 80 can have a simple structure, and the partial structure 63 can be engaged with the holder 80 by a simple operation. Can do.

  In addition, since the partial structure 63 supports the retainer 80 with the webbing 70 and the boot 76 surrounding the webbing 70, the retainer 80 can be reliably engaged with the partial structure 63.

  Note that the above can be applied even when a tongue plate (engagement portion) is attached to the partial structure 63 instead of the buckle 62 of the attachment / detachment mechanism 61.

It is a perspective view which shows the vehicle seat of one Embodiment of this invention. It is a side view which shows the state which exists in the back end position in the seated state of the vehicle seat of one Embodiment of this invention. It is a disassembled perspective view which shows the partial structure which consists of a buckle, a holder, and boots used for the vehicle seat of one Embodiment of this invention. It is a perspective view which shows the partial structure which consists of a buckle, a holder, and boots used for the vehicle seat of one Embodiment of this invention. It is sectional drawing which shows the attachment state of the holder used for the vehicle seat of one Embodiment of this invention. It is a side view which shows the state which exists in the front-end position in the seated state of the vehicle seat of one Embodiment of this invention. It is a side view which shows the accommodation state of the vehicle seat of one Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Vehicle seat 13 Seat back 20 Body floor 21 Lower floor 29 Seat cushion frame 31 Slide rail 32 Slider 60 Seat belt apparatus 61 Detachment mechanism 62 Buckle (engagement part)
63 Partial structure (partial structure)
70 Webbing 76 Boots 80 Holder 82 Ring member

Claims (5)

A state in which the seat back is tilted forward while the slider is supported on the slide rail laid on the vehicle body floor so as to be slidable by the slider and the slider includes a partial structure including one engaging portion of the seat belt device attaching / detaching mechanism. A vehicle seat that is changeable between a stowed state in which it is dropped into the lower floor of the vehicle body floor and stored and a seated state in which the seat back is raised while being pulled out from the lower floor,
A vehicle seat, comprising: a holder that causes a posture of the partial structural body to follow a change in state from the stored state to the seated state.   The vehicle seat according to claim 1, wherein the holder raises the posture of the partial structural body when in the seated state as compared to the posture when in the stored state.   The vehicle seat according to claim 1 or 2, wherein the holder has an annular member that can be expanded and contracted, and the annular member is hung on the partial structure.   The vehicle seat according to any one of claims 1 to 3, wherein the partial structure includes a boot surrounding the webbing, and the boot is supported by the boot and the webbing. 5. The holder according to claim 1, wherein the holder is attached to a seat cushion frame that is pivotally supported by the seat back and extends downward from the seat back and then extends forward. The vehicle seat according to claim 1.

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