JP2004314714A - Seat for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent an elevating mechanism from being exposed to lose the attractiveness of a vehicle seat when a seat body is moved to the outside of the interior for enabling an occupant to easily get on and off and in a vehicle seat having a mechanism for rotating a seat body and the elevating mechanism for elevating and moving inside and outside the interior through a door opening section. <P>SOLUTION: The tip of a cover body that can be wound and delivered is fixed to a seat body, and the cover body is delivered as the seat body moves to the outside of the compartment for covering the entire range of the elevating mechanism. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a vehicle seat that enables an elderly person, a disabled person, and the like to easily get on and off a vehicle, and includes a moving device that moves a seat body between a vehicle interior and a vehicle exterior. Regarding the sheet.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a technique relating to a vehicle seat of this type, there has been one disclosed in, for example, Japanese Patent No. 3042326. In this conventional vehicle seat, a vehicle width direction moving base is provided so as to be movable in a vehicle width direction toward a door opening, and a lift base is connected to the vehicle width direction moving base via a link arm. The seat body is supported above via a rotation mechanism, and when the vehicle width direction moving base moves to the door opening side, the lift base moves to the outside of the vehicle cabin through the door opening through the operation of the link arm. While descending to a height close to the road surface, the occupant seated on the seat body can easily get off the vehicle. Conversely, after the occupant sits on the seat body that has moved out of the cabin, by moving the vehicle width direction moving base toward the cabin, the seat body can be moved toward the cabin while raising the seat body. A seated person can get on easily.
Further, in the conventional vehicle seat configured as described above, when the seat body is moved out of the vehicle compartment, the drive mechanism and the like of the vehicle width direction moving base are exposed in the vehicle compartment, and the appearance of the vehicle compartment is impaired. In order to prevent this, the drive mechanism and the like are covered by a cover plate or the like when the vehicle width direction moving base moves toward the door opening.
[0003]
[Patent Document 1]
Japanese Patent No. 3042326
[0004]
[Problems to be solved by the invention]
However, according to the above-described conventional vehicle seat, although the area along the floor in the vehicle interior is covered by the cover plate, the link arm that has moved to a position that protrudes out of the vehicle interior to move the seat body out of the vehicle interior is Since the structure was not covered with the cover plate and was still exposed, it was necessary to further improve the appearance in this respect.
Therefore, the present invention can provide a vehicle that can cleanly cover a range along a link arm that moves so as to protrude out of the vehicle compartment in order to move the seat body out of the vehicle compartment, thereby further improving the appearance. It is intended to provide a sheet for use.
[0005]
[Means for Solving the Problems]
Therefore, the present invention provides a vehicle seat having the configuration described in the claim.
According to the vehicle seat of the first aspect, the seat body is rotated to the door opening side, and then the seat body is moved to the outside of the cabin by the slide mechanism, and the seat body is lowered by the elevating mechanism. The seated person can easily get on and off the vehicle.
Further, since the front end side of the cover body is fixed to the rear part of the seat body, when the seat body moves to the outside of the vehicle compartment by the slide mechanism and the elevating mechanism, the cover body is unreeled from the winding device and unreeled. The entire range of the movement path behind the seat body is covered by the cover body. Therefore, even when the seat body moves to the position outside the cabin and the link arm moves to the position protruding outside the cabin, the entire lifting mechanism including the link arm (the range along the moving base and the link The area along the arm) is covered by the cover body, so that its appearance can be further improved.
Further, since the cover body has an expansion means for maintaining the expanded state, the seat body moves to the outside of the cabin and the link arm tilts downward. As a result, the cover body is separated from the expansion means. Even if the cover body is bent in a mountain shape in a range along the link arm and in a range along the rotation base, the cover body is maintained in a stretched state (extended state) in each of the ranges, and at this point, the seat device is concerned. Appearance can be improved.
[0006]
According to the vehicle seat of the second aspect, in addition to the above-described functions and effects, the cover body can be neatly spread over the range along the moving base and the range along the link arm with a simple configuration.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a vehicle M provided with a vehicle seat 1 of the present embodiment on the left side of a second row seat. In FIG. 1, a state where the slide door D on the left side of the vehicle is opened and the seat body 10 is moved to the outside through the door opening K is indicated by a two-dot chain line. In the vehicle seat 1 of the present embodiment, the seat body 10 can be moved in the vehicle front-rear direction, and can be rotated by about 90 degrees between a position facing the vehicle front and a position facing the door opening K side. Further, the door can be horizontally slid in the vehicle width direction between the room and the outside in a lateral state facing the door opening K side, and can be moved up and down while moving in the vehicle width direction.
As shown in FIGS. 2 to 4, the vehicle seat 1 includes a seat body 10 and a first slide for moving the seat body 10 in a vehicle front-rear direction (a direction perpendicular to the paper surface in FIGS. 2 to 4). A mechanism 20, a rotation mechanism 30 for rotating the seat body 10 between a position facing the front of the vehicle and a position facing the door opening K side, and a mechanism for rotating the seat body 10 facing the door opening K side to open the door. A second slide mechanism 50 for sliding horizontally between the room and the outside through the portion K in the vehicle width direction, and the seat body 10 moved to the outside of the vehicle compartment by the second slide mechanism 50 is further moved in the vehicle width direction. An elevating mechanism 40 that moves up and down while moving is provided.
[0008]
The seat body 10 includes a seat cushion 11 and a seat back 12. The first slide mechanism 20 is provided on a fixed base 21 fixed on the floor F of the vehicle M. A front-rear slide base 23 is provided on the upper surface of the fixed base 21 so as to be slidable in the front-rear direction of the vehicle M via a guide rail 22 having a U-shaped cross section which is attached in parallel to the vehicle front-rear direction. A front-rear drive unit 24 having a drive motor 24a, a screw shaft 24b rotated by the drive motor 24a, and a nut 24c meshed with the screw shaft 24b is mounted between the fixed base 21 and the front-rear slide base 23. . According to the front-rear drive unit 24, when the drive motor 24a is activated and the screw shaft 24b rotates, the nut 24c meshed with the screw shaft 24b moves in the axial direction of the screw shaft 24b, whereby the front-rear slide base 23 is moved. Move in the vehicle front-back direction. The rotation mechanism 30 is mounted on the upper surface of the front and rear slide base 23.
The rotation mechanism 30 mainly includes an outer ring 30a and an inner ring 30b which are rotatably combined coaxially with each other. The outer ring 30a is fixed to the upper surface of the front and rear slide base 23, and the rotation base 31 is mounted on the upper surface of the inner ring 30b. Fixed. A rotation motor 32 is mounted on the upper surface of the front and rear slide base 23. The rotation output of the rotation motor 32 is transmitted to the inner race 30b via a gear transmission mechanism (not shown), whereby the rotation base 31, the lifting mechanism 40 installed on the upper surface thereof, and the seat body 10 rotate integrally.
[0009]
The elevating mechanism 40 moves the seat body 10 facing the door opening K side in the vehicle width direction (the left-right direction in FIG. 2) and moves the seat body 10 to a position higher than the floor F (seated height in the vehicle interior). A moving base 41 which slides in a vehicle width direction with respect to the rotating base 31 and a driving device 70 for moving the moving base 41. A pair of left and right four-joint link mechanisms 44, 44, which are tiltably supported by the base 41 and support the seat body 10 at the leading end side, are provided.
Details of the moving base 41 and the driving device 70 are shown in FIGS. As shown in the figure, the movable base 41 is slidably supported via guide rails 41b, 41b having a U-shaped cross section which are attached in parallel with each other along both end edges of the rotary base 31. The movable base 41 is slidably supported on each of the two guide rails 41b, 41b via two guide rollers 41a, 41a.
[0010]
The driving device 70 is provided between the moving base 41 and the rotating base 31. The moving base 41 moves with respect to the rotary base 31 by the driving device 70. The drive device 70 includes a drive motor 71, a screw shaft 72, and a nut 73. The drive motor 71 includes a motor body 71a and a reduction gear 71b for reducing the output of the motor body 71a. Although not shown, the reduction gear transmission 71b includes a gear train therein, the input side of which is connected to the output shaft of the motor body 71a, and the output side of which is connected to the screw shaft 72.
The speed reducer 71b and, consequently, the drive motor 71 are supported on the rotating base 31 by brackets 83 and 86 with buffer members 81 and 85 interposed therebetween. Since the drive motor 71 is supported on the rotation base 31 via the buffer members 81 and 85 in this manner, the rotation about the screw shaft 72 added to the drive motor 71 as a reaction force of the rotation resistance of the screw shaft 72. Vibration of the drive motor 71 generated by torque and axial force in the direction of the screw shaft 72 (especially in the pulling direction) can be efficiently absorbed to reduce noise (vibration noise, growling noise, etc.).
The nut 73 engaged with the screw shaft 72 is fixed to the lower surface of the movable base 41.
According to the drive device 70, the drive motor 71 is activated to rotate the screw shaft 72, so that the movable base 41 is separated from the door opening K and the retracted position (the position shown in FIGS. 2 and 3) and the door opening. It can be moved between a forward position (position shown in FIG. 4) close to the portion K.
[0011]
Next, as shown in FIGS. 5 and 6, a pair of left and right four-bar linkages 44 are provided on both sides of the movable base 41. Each of the four-bar linkages 44 has an inner link arm 44a and an outer link arm 44b. One end sides of both link arms 44a and 44b are supported on the side of the movable base 41 via support shafts 44c and 44d so as to be rotatable in the vertical direction. As shown in FIG. 5, the two support shafts 44c and 44d are shifted in the front-rear direction of the seat body 10.
The other ends of the link arms 44a and 44b are rotatably connected to side portions of the slide base 45 via support shafts 44e and 44f, respectively, as shown in FIGS. As shown in FIG. 7, both support shafts 44e and 44f are also shifted in the front-rear direction of the seat body 10. Further, the inner link arm 44a and the outer link arm 44b are supported by being shifted in the width direction of the seat body 10 (the thickness direction of both link arms 44a and 44b) so as not to interfere with each other.
As the link arms 44a and 44b tilt up and down, the slide base 45 is displaced up and down while moving in the vehicle width direction, whereby the seat body 10 moves up and down while moving in the vehicle width direction. The length of the link arms 44a and 44b and the distance between the support shafts 44c, 44d, 44e, and 44f are set so that the slide base 45 and the seat body 10 are displaced while always maintaining a constant sitting posture without leaning back and forth and right and left. Distance is set properly.
[0012]
As shown in FIG. 6, a pair of left and right arm receiving members 47, 47 corresponding to the left and right outer link arms 44b, 44b are attached to the front end of the rotary base 31. The left and right outer link arms 44b, 44b are mounted on the arm receiving members 47, 47, respectively.
When the moving base 41 moves in the vehicle width direction by the operation of the driving device 70, the left and right outer link arms 44b, 44b move integrally with the moving base 41 while always being received by the arm receiving member 47 from below. Therefore, the distance between the support shaft 44d of the outer link arm 44b and the arm receiving member 47 becomes larger as the moving base 41 moves to the outside of the cabin and the moving distance of the two four-bar linkages 44, 44 to the outside of the cabin increases. As a result, as shown in FIG. 4, the inner link arm 44a turns around the support shaft 44c and the outer link arm 44b turns around the support shaft 44d downward (counterclockwise in FIG. 4). Move. When the four-bar linkages 44 rotate downward in this manner, the slide base 45 and the seat body 10 are displaced downward while moving to the outside of the cabin. FIG. 4 shows that when the movable base 41 is moved to the forward position closest to the door opening K side, the two-bar linkages 44, 44 are tilted to the lowest position, whereby the seat body 10 is moved to the outermost side of the vehicle compartment. And has been lowered to the lowest position.
[0013]
Conversely, the distance between the support shaft 44d of the outer link arm 44b and the arm receiving member 47 increases as the moving distance of the two-joint link mechanisms 44, 44 toward the vehicle interior due to the movement of the movable base 41 toward the vehicle interior increases. As a result, the inner link arm 44a rotates about the support shaft 44c and the outer link arm 44b rotates about the support shaft 44d upward (clockwise in FIG. 4). When the two-bar linkages 44 and 44 rotate upward in this manner, the slide base 45 and the seat body 10 are displaced upward while moving toward the vehicle interior. FIG. 3 shows that the moving base 41 moves to the retreat position farthest away from the door opening K, and the two-joint link mechanisms 44, 44 return to a substantially horizontal position, thereby returning the seat body 10 to the rising end. It shows the state where it was turned on. From the above, the arm receiving member 47 attached to the front end of the rotary base 31 corresponds to one embodiment of the guide mechanism described in the claims.
With the lifting mechanism 40 configured as described above, the seat body 10 moves up and down while moving in the vehicle width direction.
[0014]
Next, as shown in FIGS. 7 and 8, the seat body 10 is supported on the upper surface side of the slide base 45 via the second slide mechanism 50. The seat body 10 is supported by the second slide mechanism 50 so as to be slidable on the slide base 45 in the vehicle width direction.
The second slide mechanism 50 includes a seat support 51 on which the seat body 10 is attached on the upper surface and which slides with respect to the slide base 45. The sliding direction of the seat support 51 is the same as that of the moving base 41, and becomes the vehicle width direction in a state where the seat body 10 is directed to the door opening K side. Two guide rails 51a, 51a having a U-shaped cross section are attached to the left and right sides of the lower surface of the seat support table 51 in parallel with each other. A plurality of guide rollers 45a to 45a rotatably mounted on the left and right sides of the slide base 45 are rotatably supported by the two guide rails 51a, 51a. 45 is slidably supported.
Between the slide base 45 and the seat support 51, a drive motor 52a, a screw shaft 52b rotated by the drive motor 52a, and a slide drive device 52 having a nut 52c meshed with the screw shaft 52b are provided. Is provided. The drive motor 52a is attached to the lower surface of the seat support 51 via a bracket 52e. The tip of the screw shaft 52b is rotatably supported by a holding block 52d attached to the lower surface of the seat support 51. The nut 52c is fixed to the upper surface of the slide base 45.
[0015]
When the drive motor 52a is started and the screw shaft 52b is rotated with the seat body 10 facing the door opening K side, the screw shaft 52b is moved in the axial direction by a meshing action with the nut 52c. The seat body 10 moves in the vehicle width direction with respect to the slide base 45.
As described above, the seat body 10 is moved in the vehicle width direction in two stages by the lifting mechanism 40 and the second slide mechanism 50. However, the movement of the seat body 10 by the second slide mechanism 50 is horizontal movement in the vehicle width direction and is not displaced up and down, but the movement of the seat body 10 by the lifting mechanism 40 is movement in the vehicle width direction as described above. As a result, the sheet body 10 moves along an arc-shaped locus bulging upward. That is, when the moving base 41 is moved from the retreat position shown in FIG. 3 to the forward position shown in FIG. 4, both the four-bar linkages 44, 44 move downward to the outside of the passenger compartment (the distal end thereof moves downward). (The direction in which the slide base 45 is displaced), whereby the slide base 45 and, consequently, the sheet body 10 move (fall) from the raised position to the lowered position along an arc-shaped locus. Conversely, when the moving base 41 is moved from the forward position to the retracted position, the four-bar linkages 44, 44 move upward (in a direction of displacing the distal end upward) while moving toward the vehicle interior. Then, the sheet body 10 is returned from the lowered position to the raised position along the arc-shaped trajectory.
[0016]
Next, between the sheet body 10 and the elevating mechanism 40, a cover body 60 that covers the movement path of the sheet body 10 and a winding device 65 for winding the cover body 60 are arranged. As shown in FIG. 5, the winding device 65 is attached to the upper inside of a box-shaped fixed cover 68 attached to the rear end of the rotating base 31. The fixed cover 68 has an uneven shape so that the rear portions of the movable base 41 and the driving device 70 that have reached the retracted position can be accommodated inside as shown by the two-dot chain line in FIG. Since these are accommodated in the fixed cover 68, they can be prevented from being exposed in the vehicle interior, so that the appearance of the vehicle seat 1 in the vehicle interior can be improved. Further, the fixed cover 68 prevents the drive device 70 and the like from touching the occupant's clothes and the like.
The cover body 60 is made of a synthetic leather material (leather skin) having flexibility and capable of being wound, and is manufactured with a width substantially equal to that of the rotating base 31. The front end of the cover body 60 is fixed in a state of being stretched in the width direction along the rear portion of the seat body 10, that is, the rear surface of the seat cushion 11. The winding device 65 has a built-in winding roll 65a for winding the cover body 60. The take-up roll 65a is urged by a torsion spring 65b in a direction in which the cover body 60 is taken up. Therefore, the cover body 60 is fed out against the urging force of the winding roll 65a in the winding direction.
Further, one reinforcing bar 61 is attached to a substantially central rear surface side (a lower surface side in FIG. 5) of the cover body 60 in a longitudinal direction (a winding direction and a feeding direction), between both ends in the width direction. The reinforcing bar 61 has the same length as the width of the cover body 60. This reinforcing bar 61 corresponds to an embodiment of the expanding means described in the claims.
As shown in FIG. 2, in a state where the movable base 41 is returned to the retracted position on the indoor side and the sheet body 10 is located on the indoor side, the cover body 60 is completely wound up by the winding device 65 together with the reinforcing bar 61. State.
[0017]
Since the front end of the cover body 60 is fixed to the rear part of the seat body 10 as described above, when the seat body 10 moves to the outside of the vehicle compartment by the second slide mechanism 50, the cover body 60 moves with the movement of the seat body 10. 60 is fed out against the winding force of the winding roll 65a (the urging force of the torsion spring 65b). That is, the seat body 10 moves to the outside of the vehicle compartment while pulling out the cover body 60 and extending the same. Therefore, the cover body 60 is extended while covering the movement path of the seat body 10. An elevating mechanism 40 is arranged on the movement path of the seat body 10. For this reason, the cover body 60 is extended along with the movement of the seat body 10, so that the driving device 70, the guide rails 41b and 41b, the screw shaft 72, the moving base 41, and the four-joint link mechanism 44 that constitute the lifting mechanism 40 are provided. , 44 and the like are covered by the cover body 60. This state is shown in FIG. As shown, at this stage, the reinforcing bar 61 is slightly extended from the winding device 65 and is located above the moving base 41 at this stage.
As shown in FIG. 3, after the seat body 10 moves to the front end side of the sliding range by the second slide mechanism 50, the moving base 41 of the elevating mechanism 40 starts to move forward to the outside of the vehicle compartment, whereby the seat body 10 is further moved. The cover body 60 is further extended by moving to the outside of the room.
[0018]
When the movable base 41 moves forward, the four-bar linkages 44 move together with the movable base 41 to the outside of the vehicle compartment. When the two-joint link mechanisms 44 and 44 move to the outside of the vehicle, the support shafts 44c and 44d of the inner and outer link arms 44a and 44b approach the arm receiving member 47. As shown in FIG. 4, the seat body 10 tilts downward, whereby the seat body 10 moves to the outside of the cabin while being displaced downward. When the seat body 10 starts to be displaced downward, the cover body 60 is brought into a state in which the reinforcing bar 61 is brought into contact with the upper surface of the moving base 41 and bent in a chevron shape. The body 60 is further extended. In the stage where the cover body 60 is extended along with the movement of the movable base 41 to the outside of the room, the cover body 60 is in a range between the seat body 10 and the reinforcing bar 61 (a range on the front side of the reinforcing bar 61). Since the positional relationship between the four-bar link mechanisms 44, 44 does not change, the four-bar link mechanisms 44, 44 are maintained in a state of being covered by the cover body 60 in the range.
As shown in FIG. 4, when the moving base 41 is moved to the forward end position of the moving range by the elevating mechanism 40 and the seat body 10 is taken out to the most outdoor getting-in / out position, the cover body 60 is moved from the winding device 65 to the most. It will be in the state of being extended. When the cover body 60 is extended most, the reinforcing bar 61 is placed on the upper surface of the movable base 41. When the seat body 10 moves to the getting-in / out position outside the passenger compartment and the cover body 60 is in the most extended state, the reinforcing bar 61 is attached to the cover body 60 so as to ride on the upper surface of the moving base 41. The position in the winding and unwinding direction (the horizontal direction in FIG. 4) is set.
[0019]
As described above, when the seat body 10 is taken out to the getting on / off position, the movement path of the seat body 10 (the range between the rear part of the seat body 10 and the fixed cover 68) is entirely covered by the cover body 60. Therefore, as shown in FIG. 4, all members located on the movement path of the seat body 10, such as the driving device 70, the moving base 41, and the two-four-bar link mechanisms 44, 44 are all covered by the cover body 60. Thereby, the appearance of the vehicle seat 1 in a state where the seat body 10 is taken out to the getting on / off position can be improved, and at the same time, these members can be prevented from touching the occupant's clothes and the like.
When returning the seat body 10 located at the getting on / off position to the inside of the vehicle compartment, the cover body 60 is automatically taken up by the take-up force of the take-up device 65 as the seat body 10 moves to the inside of the car compartment. It is being done. When the sheet main body 10 reaches the rear end position of the moving range by the lifting mechanism 40 and further returns to the rear end position of the moving range by the second slide mechanism 50, and reaches the position shown in FIG. Is brought into a completely wound state.
[0020]
The vehicle seat 1 configured as described above operates as follows, whereby the seat body 10 is moved from the vehicle interior to the exterior of the vehicle, and the seated person can get off from the vehicle interior to the exterior of the vehicle. Then, the seat body 10 is returned from the outside of the cabin to the cabin, and the occupant can get into a seating position (left side of the second row seat) in the cabin.
First, as shown by a solid line in FIG. 1, in a seating position where the seated person is positioned in front of the vehicle, the drive motor 24a of the first slide mechanism 20 is activated to the forward rotation side, so that the seat body 10 slides forward of the vehicle. I do. When the rotation motor 32 of the rotation mechanism 30 is activated in the forward rotation direction, the seat body 10 rotates about 90 degrees toward the door opening K side while sliding forward of the vehicle. When the seat body 10 is rotated by about 90 degrees and turned to the door opening K side, the sliding direction of the elevating mechanism 40 and the second sliding mechanism 50 is a direction along the vehicle width direction. FIG. 2 shows the state at this stage.
Next, in a state where the seat body 10 is directed to the door opening K side, the drive motor 52a of the second slide mechanism 50 is activated to the forward rotation side so that the seat body 10 passes through the door opening K to the outside of the vehicle compartment. Is moved horizontally. FIG. 3 shows a state in which the seat body 10 has slid to the front end of the sliding range by the second sliding mechanism 50. When the seat body 10 moves to the outside of the cabin in this way, the cover body 60 is unwound from the winding device 65, thereby moving along the movement path of the seat body 10 (between the rear portion of the sheet body 10 and the winding device 65). Then, each component of the lifting mechanism 40 located on the rotating base 31 is covered with the cover body 60.
[0021]
Next, the drive motor 71 of the lifting mechanism 40 is started, and the moving base 41 moves toward the door opening K from the retracted position shown in FIG. As a result, the seat body 10 moves to the outside of the passenger compartment together with the four-bar linkages 44. As described above, when the four-bar linkages 44, 44 move to the outside of the passenger compartment, the inner link arms 44a, 44a and the outer link arms 44b, 44b pivot downward about the support shafts 44c, 44d, respectively. I do. For this reason, the seat body 10 descends to a height closer to the road surface while moving to the outside of the cabin.
The cover body 60 is further extended by moving the seat body 10 to the outside of the cabin while descending, and the movement path of the seat body 10 (behind the seat body 10) is covered by the cover body 60.
As shown in FIG. 4, when the moving base 41 is moved to the front end position of the moving range by the elevating mechanism 40, the seat body 10 moves a sufficient distance to the outside of the vehicle compartment and is lowered to a height close to the road surface. You. Therefore, the occupant can easily transfer to, for example, a wheelchair laid sideways on the seat body 10. After the transfer to the wheelchair is completed and there are no more occupants in the seat body 10, the seat body 10 is returned to the passenger compartment by the reverse operation.
[0022]
Also, in this state, since the respective components such as the driving device 70 of the elevating mechanism 40, the moving base 41, and the four-bar linkages 44, 44 are covered by the cover body 60 on the movement path of the seat body 10. In addition, not only the appearance of the seat device 1 is good, but also it is possible to prevent clothes and the like of the caregiver and the occupant from touching these components.
Further, at this stage, since the reinforcing bar 61 is on the upper surface of the moving base 41 as shown in the figure, the cover body 60 is bent into a mountain shape along the rotating base 31 and the four-bar linkage mechanism 44 to be clean. It is stretched out.
On the other hand, at the time of riding, after the occupant moves from the wheelchair to the seat body 10 moved out of the passenger compartment and sits down, the drive motor 71 of the elevating mechanism 40 is activated to the reverse rotation side, whereby the four-bar linkage mechanism together with the seat body 10 is activated. 44, 44 are returned to the vehicle interior side. After the moving base 41 moves to the retreat position and the four-bar linkages 44 are returned to the vehicle interior, the drive motor 52a of the second slide mechanism 50 is activated to return the seat body 10 to the vehicle interior. . At the stage where the seat body 10 is returned from the getting-in / out position outside the vehicle compartment to the vehicle interior, the cover body 60 is automatically wound up by the winding device 65.
Thereafter, the rotation motor 32 of the rotation mechanism 30 and the drive motor 24a of the first slide mechanism 20 are activated to slide the seat body 10 backward while rotating the seat body 10 toward the front side of the vehicle by about 90 degrees. It is possible to get into a sitting position (passenger seat position). During this time, the occupant may remain seated on the seat body 10, so that the labor of the occupant and the caregiver is significantly reduced.
[0023]
According to the vehicle seat 1 of the present embodiment configured as described above, when the seat body 10 is moved toward the door opening K side to the outside of the cabin, the cover body 60 is fed out from the winding device 65, Thereby, the moving path of the sheet body 10 is covered by the cover body 60. For this reason, in the related art, when the seat body moves to the outside of the passenger compartment, the respective components such as the elevating mechanism that are exposed are covered with the cover body 60 and become invisible, so that the appearance of the seat device 1 can be improved. Thus, the commercial value of the seat device 1 can be increased.
Further, since the entire lifting mechanism 40 is covered by the cover body 60, the occupant or the clothes of the occupant do not touch the members constituting the lifting mechanism 40. In this respect, the usability and operability of the seat apparatus 1 are improved. Can be improved.
Further, as shown in FIG. 4, in a state where the seat body 10 is located at the getting-in / out position outside the passenger compartment, the cover body 60 places the reinforcing bar 61 on the upper surface of the moving base 41 and sets the reinforcing bar 61 as a boundary. Since the front side area (the area between the sheet body 10 and the reinforcing bar 61) and the rear side area (the area between the reinforcing bar 61 and the winding device 65) bend each other substantially in a mountain shape, the four-bar link is formed. The range along the mechanisms 44, 44 and the range along the rotary base 31 can be efficiently covered in a tight state.
[0024]
The embodiment described above can be implemented with various changes. For example, although the cover body 60 made of synthetic leather is illustrated, a cover body made of a vinyl sheet or other material such as cloth can be used.
In addition, the cover body that is unwound and wound by the movement of the sheet body has been exemplified. However, by using an electric winding type winding apparatus, the winding apparatus may be started in synchronization with the movement of the sheet body 10. , The cover body may be wound up and fed out.
Further, the configuration in which the reinforcing bar 61 is attached to one location in the winding and feeding direction is illustrated, but a configuration in which more reinforcing bars are attached as necessary may be employed.
Further, the reinforcing bar 61 is illustrated as an example of the expanding means. However, instead of this, a reinforcing wire may be woven into the cover body 60 to maintain the expanded state. Alternatively, a cover body may be formed by using a large number of small width plate members as the expanding means and connecting them to each other in a rotatable manner.
Furthermore, although the vehicle seat 1 applied to the left seat of the second row seat of the vehicle M is illustrated, the present invention can be applied to seats in other positions such as a passenger seat and a driver seat.
[Brief description of the drawings]
FIG. 1 is a plan view of a vehicle in which a vehicle seat according to an embodiment of the present invention is applied to a left side of a second row seat.
FIG. 2 is a view of the vehicle seat as viewed from the rear side of the vehicle (the direction of arrow (2) in FIG. 1, the same applies hereinafter). This figure shows a state in which the seat body is turned to the door opening side.
FIG. 3 is a view of the vehicle seat as viewed from the rear side of the vehicle. This figure shows a state in which the seat body has been moved to the outside of the cabin by the slide mechanism.
FIG. 4 is a view of the vehicle seat as viewed from the rear side of the vehicle. This figure shows a state in which the seat body is moved to the outside of the cabin by the elevating mechanism, and is lowered to a height close to the road surface.
FIG. 5 is an enlarged view of a portion (5) in FIG. 3, which is a side view of a rear portion of a lifting / lowering mechanism and around a winding device. In this drawing, the fixed cover 68 is shown in a vertical section.
FIG. 6 is a vertical sectional view of the elevating mechanism, taken along line (6)-(6) in FIG. 5;
FIG. 7 is a side view of the slide mechanism.
FIG. 8 is a front view of the slide mechanism as viewed from the direction of the arrow (8) in FIG. 7;
[Explanation of symbols]
M… Vehicle
K: Door opening
1: Vehicle seat
10: Sheet body
20: First slide mechanism
23: Front and rear slide base
30 ... Rotating mechanism
31 ... Rotating base
40 ... Elevating mechanism
41… Moving base
44: four-bar linkage, 44a: inner link arm, 44b: outer link arm
50: second slide mechanism
60 ... Cover body
61 ... Reinforcing bar
65 ... winding device
68… Fixed cover
70 ... Drive device
71 ... Drive motor
72 ... screw shaft
73 ... nut

Claims (2)

A rotation mechanism for rotating the seat body between a seating position facing the front of the vehicle and a boarding / alighting position facing the door opening side, and a rotation mechanism provided between the rotation mechanism and the seat body; A sliding mechanism for sliding the seat body facing the door opening side in the front-rear direction of the seat; and a sliding mechanism provided between the sliding mechanism and the rotating mechanism, which is moved out of the passenger compartment by the sliding mechanism. An elevating mechanism for elevating and lowering the sheet main body in a state where the elevating mechanism is rotated, and the elevating mechanism is supported on the rotatable base so as to be movable in the sheet front-rear direction on the rotatable base. A moving base, a link arm having a base end supported by the moving base so as to be tiltable up and down, and a distal end side supporting the seat body via the slide mechanism; It said link arm is a vehicle seat and a guide mechanism for guiding the link arm so as to lift the front end while moving the seat front-rear direction with the movement of the seat front-rear direction over the scan,
At the rear of the sheet body, the leading end side of a cover body that can be wound up by a winding device is fixed, and the winding device is attached to the rotating base behind the sheet body, and the slide mechanism and the elevating mechanism are used. With the movement of the seat body to the outside of the cabin, the cover body is unwound from the winding device, and the cover body extends along the link arm behind the seat body and along the rotation base. A vehicle seat configured to cover the cover body and to hold a state in which the cover body extends in the width direction at a boundary position between the two ranges by a stretching means attached to the cover body. 2. The vehicle seat according to claim 1, wherein the extension means is a reinforcing bar attached to the cover body along a width direction at a boundary position between the two ranges. 3.

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