JP2005153880A - Vehicular seat structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicular seat structure capable of being dropped in a low level floor for stably moving forward and backward. <P>SOLUTION: Slide rails 41 along a vehicle body longitudinal direction are provided to the high-level floor 32 of a stepped floor 33 having the low-level floor 31 on the front side of the vehicle body and the high-level floor 32 on the rear side of the vehicle body, a seat back 28 is journaled with the sliding part 42 slid by being guided with the slide rails 41 in a manner to be tiltable forward with a rotary axis 46, the rear part of a seat cushion frame 39 which once extends downward and then forward is journaled with the seat back 28 rotatable with a support axis 48 located above the rotary shaft 46, and the front part of the seat cushion frame 39 is linked to the low-level floor 31. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vehicle seat structure.

  As a 1st technique regarding a vehicle seat structure, there exists what was disclosed by Unexamined-Japanese-Patent No. 2001-97080 (patent document 1), for example. What is disclosed in this publication is a three-seat vehicular seat structure having a pair of side seats disposed on the left and right sides and a center seat disposed between the side seats. By slidably provided in the longitudinal direction of the vehicle body, an inverted V-shaped layout is possible in which the central seat is positioned on the front side of the vehicle body with respect to the pair of side seats. In order to obtain a stable feeling of holding, side protectors are provided on both sides of the seat back so as to be openable and closable.

Moreover, as a 2nd technique regarding a vehicle seat structure, there exist some which were disclosed by Unexamined-Japanese-Patent No. 2000-108744 (patent document 2), for example. In this publication, a slide rail is provided on a lower floor of a stepped floor having a lower floor on the front side of the vehicle body and a higher floor on the rear side of the vehicle body, and slides guided by the slide rail to slide. The front part of the seat cushion is linked to the part, and a roller that rolls on the higher floor is provided at the rear part of the seat cushion.
JP 2001-97080 A JP 2000-108744 A

  In the second technology, the front part of the seat cushion is guided by the slide rail, and the rear roller rolls on the higher floor so that it can be moved back and forth. The seat is stored in the lower floor by performing a so-called dive down in which the seat cushion is rotated forward by a linked link and dropped into the lower floor in a state of being tilted to the side. However, since the rear part of the seat cushion only rolls on a high floor with a roller, there is a problem that the rear part of the seat cushion is lifted freely during the forward and backward movement, and the seat cushion cannot be moved forward and backward in a stable state.

  Accordingly, an object of the present invention is to provide a vehicle seat structure that can be stably moved back and forth while being able to be dropped onto a lower floor.

  In order to achieve the above-mentioned object, the invention according to claim 1 includes a lower floor (for example, the lower floor 31 in the embodiment) on the front side of the vehicle body and a higher floor (for example, the higher floor 32 in the embodiment) on the rear side of the vehicle body. A slide rail (for example, slide rail 41 in the embodiment) provided along the vehicle body front-rear direction is provided on the higher floor of the step floor having the floor (for example, the step floor 33 in the embodiment), and is slid by being guided by the slide rail and sliding. For example, the seat back (for example, the seat back 28 in the embodiment) is pivotally supported by the rotation shaft (for example, the rotation shaft 46 in the embodiment) so as to tilt forward (for example, the sliding portion 42 in the embodiment) A seat cushion frame (for example, a seat cushion in the embodiment) that extends downward and extends forward on the seat back. The rear portion of the seat frame 39) is pivotally supported by a support shaft (for example, the support shaft 48 in the embodiment) above the pivot shaft so that the front portion of the seat cushion frame is supported with respect to the lower floor. It is characterized by link connection.

  As a result, when sliding back and forth, the seat back is pivotally supported by the sliding portion guided by the slide rail on the higher floor, and the seat cushion frame that supports the seat cushion is pivotally supported by the rear portion of the seat back. Because the front part is linked to the lower floor, it can move back and forth stably without being lifted from the floor. Further, when the seat back is tilted forward, the rear shaft support position of the seat cushion frame that is pivotally supported by the seat back moves to the front side and the lower side. As a result, the seat cushion frame moves the seat cushion body that is held forward and Move it down and drop it into the lower floor.

  The invention according to claim 2 is a stepped floor (for example, an embodiment) having a lower floor (for example, the lower floor 31 in the embodiment) on the front side of the vehicle body and a higher floor (for example, the higher floor 32 in the embodiment) on the rear side of the vehicle body. A slide rail (for example, slide rail 41 in the embodiment) along the vehicle body longitudinal direction is provided on the higher floor of the step floor 33), and a sliding portion (for example, the slide in the embodiment) that slides guided by the slide rail. The seat back (for example, the seat back 28 in the embodiment) is pivotally supported by the portion 42) so that the seat back can be tilted forward, and the seat back locking mechanism can be fixed and fixed to the sliding portion in a seating posture in which the seat back can be seated. The seat cushion frame (e.g., the implementation of the seat cushion frame) is provided on the seat back above the sliding portion. The rear portion of the seat cushion frame 39) is pivotally supported to overlap the seat cushion and the seat back, and the front portion of the seat cushion frame is linked to the lower floor. It is a feature.

  The invention according to claim 3 is the invention according to claim 1 or 2, wherein the contact plate capable of contacting the back surface of the seat back is swingably connected to the rear storage room floor. It is said.

  The invention according to claim 4 is characterized in that in the invention according to any one of claims 1 to 3, an inner anchor of a seat belt is attached to the sliding portion guided by the slide rail.

  According to the present invention, when sliding back and forth, the seat back is pivotally supported by the sliding portion guided by the slide rail of the higher floor, and the seat cushion frame that supports the seat cushion is pivotally supported by the rear portion of the seat back. In addition, since the front part is linked to the lower floor, it can move back and forth stably without being lifted from the floor. Further, when the seat back is tilted forward, the rear shaft support position of the seat cushion frame that is pivotally supported by the seat back moves to the front side and the lower side. As a result, the seat cushion frame moves the seat cushion body that is held forward and Move it down and drop it into the lower floor. Therefore, it is possible to move back and forth stably while enabling dropping to a lower floor.

  A vehicle seat structure according to an embodiment 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 in the vehicle body.

  The vehicle seat structure of the present embodiment is a three-seat structure having a pair of side seats arranged on the left and right sides and a center seat arranged between the side seats. It is applied to both sheets provided in two rows in the direction. Note that it may be applied to only one column.

  As shown in FIG. 1, the pair of left and right side seats 11 in the first row from the front have a seat cushion 12 and a seat back 13 connected to the rear end side of the seat cushion 12, respectively. Thus, the slide mechanism 14 provided on the lower side of the seat cushion 12 can slide back and forth. Note that these side seats 11 have the same range of front and rear slides by the slide mechanism 14.

  The center sheet 16 provided between the both side sheets 11 in the first row is narrower than the lateral width of the both side sheets 11. The central seat 16 has a seat cushion 17 and a seat back 18 connected to the rear end side of the seat cushion 17, and can be slid forward and backward independently by a slide mechanism 19 provided on the lower side of the seat cushion 17. It has become. The center seat 16 is shifted by a predetermined amount to the rear side while the range of the front and rear slide by the slide mechanism 19 partially overlaps the slide range of the side seat 11 by the slide mechanism 14. The slide range of the central seat 16 by the slide mechanism 19 is set larger than the slide range of the side seat 11 by the slide mechanism 14.

  Specifically, as shown by a two-dot chain line in FIG. 1, when the pair of side sheets 11 is positioned at the front end position by the slide mechanism 14 and the center sheet 16 is positioned at the front end position by the slide mechanism 19, The center sheet 16 is shifted to the rear side by a predetermined amount with respect to the side sheet 11, resulting in a V-shaped layout.

  Further, the side sheets 11 on both sides are positioned at the rear end position by the slide mechanism 14 as shown by the solid line in FIG. 1, and the center sheet 16 is moved to the front end position by the slide mechanism 19 as shown by the two-dot chain line in FIG. When positioned, as shown also in FIG. 2, the side sheet 11 and the center sheet 16 on both sides have a linear layout that aligns the front and rear positions.

  Further, the side sheets 11 on both sides are positioned at the front end position by the slide mechanism 14 as shown by a two-dot chain line in FIG. 1, and the center sheet 16 is moved to the rear end position by the slide mechanism 19 as shown by a solid line in FIG. When positioned, the center sheet 16 is shifted to the rear side by a predetermined amount from the pair of side sheets 11, resulting in a V-shaped layout. At this time, in a state where the angles of the seat backs 13 and 18 are adjusted, the amount of sliding by the sliding mechanism 19 of the central seat 16 is such that the shoulder of the occupant of the central seat 16 is completely separated from the shoulder of the occupant of the side seat 11. Is set.

In addition, as shown by a solid line in FIG. 1, when the side sheets 11 on both sides are positioned at the rear end position by the slide mechanism 14 and the center sheet 16 is positioned at the rear end position by the slide mechanism 19, FIG. As shown in the figure, the center sheet 16 is shifted to the rear side by a predetermined amount from the pair of side sheets 11, resulting in a V-shaped layout. At this time, in the state where the angles of the seat backs 13 and 18 are adjusted, the amount of sliding by the sliding mechanism 19 of the central seat 16 is such that the shoulder of the passenger of the central seat 16 is completely separated from the shoulder of the passenger of the side seat 11 Is set.
That is, when the center seat 16 is located at the rear end position, the occupant's shoulder of the center seat 16 is always completely separated from the occupant's shoulder of the side seat 11 regardless of the position of the side seat 11.

  As described above, in the first row, the V-shaped layout in which the center seat 16 is positioned on the rear side of the vehicle body with respect to the pair of side seats 11 is possible. Interference can be prevented. Moreover, since the center seat 16 is positioned on the rear side of the vehicle body with respect to the pair of side seats 11, the occupant of the center seat 16 is held on the left and right sides of the body by the pair of side seats 11, and as a result, There is no need to open and close side protectors on both sides of the seat back. Therefore, when three people are seated, it is possible to prevent the shoulders of adjacent passengers from interfering with each other, and the number of parts and the cost can be reduced.

  The pair of left and right side seats 21 in the second row from the front each have a seat cushion 22 and a seat back 23 connected to the rear end side of the seat cushion 22 and are not slidable back and forth. Note that the lateral width of the second row of side sheets 21 is narrower than the lateral width of the first row of side sheets 11.

  The central sheet 26 provided between the two side sheets 21 in the second row is narrower than the lateral width of the side sheets 21 and wider than the lateral width of the central sheet 16 in the first row. ing. Further, the center position of the central sheet 26 in the left-right direction coincides with the center position of the central sheet 16 in the left-right direction in the left-right direction. The central seat 26 has a seat cushion 27 and a seat back 28 connected to the rear end side of the seat cushion 27, and can be slid back and forth independently by a slide mechanism 29 provided on the lower side of the seat cushion 27. It has become. The center seat 26 extends rearward from the side seat 21 whose position is fixed by the slide mechanism 29 in the longitudinal direction.

  Specifically, as shown by a two-dot chain line in FIG. 1, when the center sheet 26 is positioned at the front end position by the slide mechanism 29, as shown in FIG. Becomes a linear layout that aligns the front and back.

  Further, as shown by a solid line in FIG. 1, when the center sheet 26 is positioned at the rear end position by the slide mechanism 29, the center sheet 26 is shifted to the rear side by a predetermined amount from the pair of side sheets 21. As shown in FIG. At this time, in a state where the angles of the seat backs 23 and 28 are matched, the sliding amount of the central seat 26 by the sliding mechanism 29 is such that the shoulder of the occupant of the central seat 26 is completely separated from the shoulder of the occupant of the side seat 21. Is set.

  As described above, in the second row as well, a V-shaped layout is possible in which the center seat 26 is positioned on the rear side of the vehicle body with respect to the pair of side seats 21. Interference can be prevented. In addition, since the center seat 26 is positioned on the rear side of the vehicle body with respect to the pair of side seats 21, the occupant of the center seat 26 is held on the left and right sides by the pair of side seats 21, and as a result, the seat back It is not necessary to provide side protectors on both sides of the door so that they can be opened and closed. Therefore, when three people are seated, it is possible to prevent the shoulders of adjacent passengers from interfering with each other, and the number of parts and the cost can be reduced.

Next, the second row of central sheets 26 will be further described.
As shown in FIG. 4, the center seat 26 in the second row is a stepped floor in which a lower floor 31 on the vehicle body front side in the vehicle interior and a higher floor 32 on the rear side of the vehicle body higher than the lower floor 31 are adjacent to each other. 33.

  Here, the seat back 28 of the central seat 26 includes a seat back body 35 that has cushioning properties and supports the back of the occupant, and a seat back frame 36 that holds the seat back body 35.

  The seat cushion 27 of the center seat 26 includes a seat cushion body 38 that has cushioning properties and supports the occupant's buttocks, and a seat cushion frame 39 that holds the seat cushion body 38.

  As shown in FIG. 5, a pair of slide rails 41 extending in the longitudinal direction of the vehicle body are provided on the high floor 32 so as to be separated from each other in the left-right direction. The slide rails 41 can be slid only in the longitudinal direction. The sliding portion 42 is held on the surface. These slide rail 41 and sliding portion 42 constitute a slide mechanism 29.

The seat back frame 36 has a substantially rectangular frame portion 44 and a pair of left and right sides on one side in the length direction of the frame portion 44 so as to extend outward from the frame portion 44 along the length direction. The support shafts 45 are provided, and the rotation shafts 46 each having a central axis line arranged in the left-right direction are provided on the extending distal ends of the support portions 45. These rotating shafts 46 are respectively supported by the sliding portions 42 on both sides. As a result, the seat back frame 36 can be tilted forward from a vertically standing state about the rotation shaft 46, and includes a seat back main body 35 supported by the frame portion 44 of the seat back frame 36. As a whole, the seat back 28 can be tilted forward from a standing state substantially vertically along the rotation shaft 46.
As a result, the seat back 28 is pivotally supported by the sliding portion 42 that slides guided by the slide rail 41 so as to be able to tilt forward.

  Support shafts 48 each having a central axis in the left-right direction are attached to positions that are a predetermined amount above the pivot shaft 46 of both support portions 45 in the standing state of the seat back frame 36. The rear portion of the seat cushion frame 39 is pivotally supported on these support shafts 48. That is, the seat cushion frame 39 extends along the left-right direction that connects a pair of extending portions 49 that extend downward from the respective support shafts 48 and then extend forward, and the extending distal ends of these extending portions 49. A U-shape having a connecting portion 50 is formed. The seat cushion body 38 is supported on the side of the seat cushion frame 39 slightly on the connecting portion 50 side.

  A pair of left and right support members 52 are attached to the connecting portion 50 at the front end of the seat cushion frame 39, and each of the support members 52 is provided with a rotation shaft 53 having a central axis line disposed in the left-right direction. . One end of a link arm 55 is rotatably connected to the rotation shaft 53. That is, the link arm 55 has a U-shape having a pair of extending portions 56 extending from the rotating shaft 53 and a connecting portion 57 extending in the left-right direction for connecting the extending distal ends of the extending portions 56. Yes.

The lower floor 31 is attached with a detachable support portion 59 that removably connects the connecting portion 57 on the distal end side of the link arm 55 and rotatably supports the connecting portion 57 in the connected state.
As a result, the connecting portion 50, which is the front portion of the seat cushion frame 39, is linked to the lower floor 31.

  A contact plate 61 that can contact the back surface of the central sheet 26 is swingably connected to the storage chamber floor 62 behind the central sheet 26 on the rear side of the central sheet 26.

Next, the operation of the central seat 26 will be described.
First, a sitting state in which a normal occupant can be seated will be described with reference to FIGS. 4 and 6.
In the seated state, the seat back 28 is fixed to the sliding portion 42 by a lock mechanism (not shown) in a standing state. The connecting portion 57 of the link arm 55 is connected to the attachment / detachment support portion 59. Note that the lock mechanism can be fixed to and released from the sliding portion 42 in a seating posture in which the seat back 28 can be seated.

  In this seated state, the sliding portion 42 slides along the slide rail 41. Here, the sliding portion 42 can be fixed to and released from the slide rail 41 by a slide lock mechanism 63 at a plurality of positions.

  Then, for example, the slide portion 42 is fixed to the high floor 32 from a state where it is located at the rear end position of the slide range as shown in FIG. 4 to a state where it is located at the front end position of the slide range as shown in FIG. When the seat 41 is guided by the rail 41 and slides, the seat back 28 fixed to the sliding portion 42 slides as it is, while the seat cushion 27 rotatably connected to the support shaft 48 of the seat back 28 is provided. By rotating the link arm 55 rotatably connected to the front rotation shaft 53 around the connection portion 57 supported by the attachment / detachment support portion 59, the front side is slightly arc-shaped locus. Slide up and down to draw. When sliding backward, the reverse operation is performed.

  As described above, when sliding back and forth, the seat back 28 is pivotally supported by the sliding portion 42 guided by the slide rail 41 of the high floor 32, and the seat cushion frame 39 supporting the seat cushion body 38 is Since the rear part is pivotally supported and the front part is linked to the lower floor 31, it can move back and forth stably without being lifted freely from the floor.

Next, the dive down storage state will be described.
When the sliding portion 42 is positioned at the front end position of the sliding range as shown in FIG. 6 and the lock mechanism is unlocked, the seat back 28 is centered around the rotation shaft 46 by the biasing force of a spring (not shown). Rotate and tilt forward. Then, the support shaft 48 located above the rotation shaft 46 in the seat back 28 moves to the front side and the lower side. As a result, the seat cushion frame 39 is moved to the support shaft 48 as shown in FIG. The connected rear side moves to the front side and the lower side, and the link arm 55 that is rotatably connected to the rotation shaft 53 of the front part is tilted forward about the connecting part 57 supported by the attachment / detachment support part 59. As a result, the front side also moves to the front side and the lower side. Drop it. At this time, the seat back 28 overlaps with the seat cushion 27 and the upper surface becomes substantially horizontal. Accordingly, the contact plate 61 that contacts the back surface of the central sheet 26 is also substantially horizontal, and the storage chamber floor 62, the contact plate 61, and the central sheet 26 are flat.

  As described above, the center seat 26 can be moved back and forth stably while being able to be dropped onto the lower floor 31.

  It is also possible to place the seat back 28 in an upright state, remove the link arm 55 from the attachment / detachment support portion 59, and rotate the seat cushion 27 around the support shaft 48 to stand on the seat back 28. At this time, the link arm 55 is extended downward due to its own weight.

  Here, although not shown in the drawings, by attaching the inner anchor of the seat belt to the sliding portion 42 guided by the slide rail 41, the seat belt attachment point does not depend on the slide position, so that the fit of the seat belt is improved. You can always get it by sliding.

It is a top view which shows the vehicle seat structure of one Embodiment of this invention. It is a perspective view which shows one state of the vehicle seat structure of one Embodiment of this invention. It is a perspective view which shows another state of the vehicle seat structure of one Embodiment of this invention. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view showing a vehicle seat structure according to an embodiment of the present invention and showing a state in which a central seat is located at a rear end position. It is a perspective view which shows the vehicle seat structure of one Embodiment of this invention. 1 is a side view showing a vehicle seat structure according to an embodiment of the present invention and showing a state in which a central seat is located at a front end position. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view showing a vehicular seat structure according to an embodiment of the present invention and showing a dive-down storage state of a central seat.

Explanation of symbols

11, 21 Side seat 16, 26 Center seat 19, 29 Slide mechanism 28 Seat back 31 Lower floor 32 Higher floor 33 Stepped floor 39 Seat cushion frame 41 Slide rail 42 Sliding part

Claims (4)

  A slide rail is provided on the higher floor of the stepped floor having a lower floor on the front side of the vehicle body and a higher floor on the rear side of the vehicle body, and the seat back is rotated on the sliding portion guided and slid by the slide rail. A shaft is supported so that it can be tilted forward, and the rear portion of the seat cushion frame that extends downward and extends forward is supported by the seat back so that it can be rotated by a support shaft that is above the rotation shaft. A vehicle seat structure, wherein a front portion of the seat cushion frame is linked to the lower floor.   A slide rail is provided on the higher floor of the stepped floor having a lower floor on the front side of the vehicle body and a higher floor on the rear side of the vehicle body, and the seat back is tilted forward on the sliding portion that is guided by the slide rail and slides. The seat back locking mechanism can be fixed to and released from the sliding portion in a seating posture in which the seat back can be seated, and the seat back above the sliding portion can be fixed to the seat back. The vehicle is characterized in that the rear portion of the cushion frame is pivotally supported to overlap the seat cushion and the seat back, and the front portion of the seat cushion frame is linked to the lower floor. Sheet structure.   3. The vehicle seat structure according to claim 1, wherein a contact plate capable of contacting the back surface of the seat back is swingably connected to a rear storage chamber floor. The vehicle seat structure according to any one of claims 1 to 3, wherein an inner anchor of a seat belt is attached to the sliding portion guided by the slide rail.

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