JP2005319957A - Seat device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat device for a vehicle that can move the seat body toward the outside of the cabin, and can reduce the impact and secure the durability of a mechanism even when a guide rail moving with the seat body interferes with the slide supporting side when the guide rail of a linear motion mechanism is mounted to the seat body. <P>SOLUTION: Resin-made buffer members 60 and 60 are mounted to the rear ends of guide rails 51a and 51a moving with the seat body 10, and a slope 41b is disposed on a longitudinal wall section 41a on the slide supporting side. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vehicle seat device that allows an occupant such as a disabled person or an elderly person to easily get on and off the vehicle.

In recent years, various types of sheet apparatuses of this type have been provided. For example, Japanese Patent Laid-Open No. 2004-50968 discloses a rotation mechanism that rotates a seat body, a front and rear slide mechanism that slides the seat body in the vehicle front-rear direction, and a state that is directed toward the door opening by the rotation mechanism. There is described a vehicle seat device provided with an elevating mechanism that lowers a seat body to a lower position while moving the seat body to the outside of the passenger compartment.
According to this vehicle seat device, the occupant (a seater of the seat device) can easily sit on the seat body outside the passenger compartment by moving the seat body to the outside of the passenger compartment and lowering it to a height close to the road surface. By moving the seat body to the vehicle interior side as it is, it is possible to get into a predetermined position in the vehicle interior very easily, and conversely, it is possible to move out of the vehicle interior.
JP 2004-50968 A

However, the conventional vehicle seat device still has to be improved. That is, the conventional vehicle seat device described above includes a slide mechanism for moving the seat body further horizontally relative to the lift mechanism between the lift mechanism and the seat body. This slide mechanism mainly comprises a pair of left and right linear motion mechanisms having a guide rail and a movable body movably engaged with the guide rail, and a drive mechanism having an electric motor and a screw shaft mechanism. The guide rail is attached to the lower surface of the seat body in parallel with each other along the front-rear direction, the moving body is attached to the seat holder of the lifting mechanism, and the driving mechanism moves the seat body back and forth with respect to the lifting device. ing.
The movable body engaged with both guide rails is fixed to the seat holder by a rubber floating structure in which an elastic rubber cushion material is sandwiched between the movable body.
According to this rubber floating structure, the seat body, both guide rails and the like can be slightly displaced in the left-right direction and the up-down direction, so that errors in the assembly position of the guide rail and the moving body can be absorbed. However, as a result of adopting this floating structure, especially when a lateral load is applied to the seat body when the seat body is moved in the indoor direction by the slide mechanism, the guide rail deviates from the normal movement locus and the rear end interferes with the seat holder. There was a risk. When the rear end portion of the guide rail interferes with the seat holder, the impact is not only transmitted to the occupant (sitting person) but also causes damage to the seat holder and the durability of the vehicle seat device.
The present invention has been made in view of this problem. When the guide rail deviates from the normal movement locus and interferes with the seat holder, the guide rail can be corrected and the impact of the interference can be reduced. An object is to provide a sheet device.

For this reason, the present invention provides a vehicle seat device having the configuration described in the above claims.
According to the vehicle seat device of the first aspect, when the seat main body is returned to the vehicle interior side, the rear end portion (end portion on the vehicle interior side) of the guide rail that moves integrally with the seat main body is the first. Even in the case of interference with the movement base, the guide rail and the movement path of the seat main body are formed at one or both of the interference portions because a relief inclined surface that is inclined with respect to the movement direction of the seat main body is formed. Is corrected to the regular movement path, and as a result, the seat body can be moved to a predetermined position on the vehicle interior side. Further, even if the rear end portion of the guide rail interferes with the first movement base, the movement path is corrected, so that the impact due to the interference can be greatly reduced.
According to the vehicle seat device of the second aspect, in addition to the above-described effects, the guide rail interferes with the first moving base with the buffer member interposed therebetween, so that the impact at the time of interference can be further alleviated. This can alleviate the impact of the seated person and enhance the durability of the vehicle seat device.
According to the vehicle seat device of claim 3, in addition to the above-described operation and effect, the guide slanting surface on the buffer member side interferes with the first movement base, so that the movement path of the guide rail is the normal movement path. To be corrected.
According to the vehicle seat device of the fourth aspect, the buffer member can be replaced easily and at low cost. Further, it can be easily retrofitted to an existing vehicle seat device.

Next, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a vehicle M equipped with a vehicle seat device 1 of the present embodiment in a passenger seat. FIG. 1 shows a state in which the door D of the passenger seat is opened, the seat body 10 is directed to the door opening K side from a position facing the front of the vehicle, and further moved to the outdoor side through the door opening K. Has been.
The vehicle seat device 1 of this example is capable of moving the seat body 10 in the vehicle front-rear direction, and horizontally rotates about 90 ° between a position facing the front of the vehicle and a position facing the door opening K side. Furthermore, it can be lowered while being moved in the vehicle width direction between the room and the outside in a state of facing the door opening K side. Hereinafter, a mechanism for performing each operation will be described.
As shown in FIGS. 2 to 4, the vehicle seat device 1 includes a seat body 10 and a back-and-forth movement for moving the seat body 10 in the vehicle front-rear direction (a direction orthogonal to the plane of FIG. 2 to FIG. 4). A mechanism 20, a rotating mechanism 30 that horizontally rotates the seat body 10 between a position facing the front of the vehicle and a position facing the door opening K, and the seat body 10 facing the door opening K. An outdoor moving mechanism 40 for lowering the vehicle while moving it to the outside of the passenger compartment through the door opening K is provided.

The seat body 10 includes a seat cushion 11 and a reclining seat back 12.
The front-rear moving mechanism 20 is attached on a fixed base 21 fixed to the floor F of the vehicle M. On the upper surface of the fixed base 21, a front / rear slide base 23 is provided in the front / rear direction of the vehicle M (in a direction perpendicular to the paper surface in the drawing) via guide rails 22, 22 having a U-shaped cross section attached in parallel to the vehicle front / rear direction. Is slidable. A front / rear drive device 24 having a drive motor 24a, a screw shaft 24b rotated by the drive motor 24a, and a nut 24c engaged with the screw shaft 24b is attached between the fixed base 21 and the front / rear slide base 23. . The drive motor 24 a is mounted on the fixed base 21, the screw shaft 24 b is rotatably supported on the fixed base 21, and the nut 24 c is mounted on the lower surface of the front / rear slide base 23.
According to the front / rear drive device 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 forward or backward in the vehicle. A rotation mechanism 30 is attached to the upper surface of the front / rear slide base 23.
The rotation mechanism 30 has an outer ring 30a and an inner ring 30b that are coaxially and rotatably combined with each other. An outer ring 30a is fixed to the upper surface of the front and rear slide base 23, and a rotating base 31 is fixed to the upper surface of the inner ring 30b. A rotary motor 32 is attached to the upper surface of the front / rear slide base 23. The rotation output of the rotary motor 32 is transmitted to the inner ring 30b via a gear transmission mechanism (not shown), whereby the rotation base 31 and the outdoor moving mechanism 40 and the seat body 10 installed on the upper surface thereof rotate as a unit. The operation range of the rotary motor 32 and the rotation range of the inner ring 30b are such that the seat body 10 is rotated forward and reverse in a range of about 90 ° corresponding to the position facing the front of the vehicle and the position facing the door opening K side. Is set to

Next, the outdoor moving mechanism 40 includes an elevating mechanism 43 including a first slide mechanism 42 and a second slide mechanism 55.
The lifting mechanism 43 moves the seat body 10 in the vehicle width direction (left-right direction in FIG. 2) in a state where the seat body 10 faces the door opening K, and lower and lower than the floor F. A first moving base 41 that slides in the vehicle width direction with respect to the rotating base 31 and a first sliding mechanism for moving the first moving base 41 has a function of moving up and down between a height close to the road surface. 42 and a pair of left and right four-bar linkage mechanisms 44, 44 supported by the first moving base 41 so as to be tiltable up and down and supporting the seat body 10 on the front end side. The first slide mechanism 42 includes a pair of left and right first linear motion mechanisms 46, 46 and a first slide drive device 70.
As shown in FIG. 5, each of the first linear motion mechanisms 46 and 46 includes a guide rail 46b and a movable body 46a movably engaged along the guide rail 46b, and the first movement base 41 has both the first linear motion mechanisms. It is slidably supported on the rotary base 31 via mechanisms 46 and 46. The first moving base 41 is slidably supported on the rotating base 31 by the first linear motion mechanisms 46, 46. The sliding direction of the first moving base 41 is the front-rear direction of the seat body 10 and is the vehicle width direction when the seat body 10 is directed to the door opening K side.
The first slide drive device 70 includes a drive motor 71, a screw shaft 72, and a nut 73. The drive motor 71 is mounted on the rotary base 31. The screw shaft 72 is supported on the rotation base 31 so as to be rotatable around the axis. The nut 73 meshed with the screw shaft 72 is fixed to the lower surface of the first moving base 41. For this reason, when the drive motor 71 is started, the screw shaft 72 rotates around the shaft, and therefore the nut 73 and the first moving base 41 slide in a direction perpendicular to the paper surface in FIG.

Next, as shown in FIGS. 2 to 5, a pair of left and right four-joint link mechanisms 44, 44 are attached to both sides of the first moving base 41 so as to be tiltable up and down. The left and right referred to here means the left and right as viewed from the seated person seated on the seat body 10.
Both the four-bar linkage mechanisms 44 and 44 are configured symmetrically with respect to each other. Hereinafter, one of the four-bar linkage mechanism 44 will be described. The four-bar linkage mechanism 44 includes an inner arm 44a and an outer arm 44b. The inner arm 44a and the outer arm 44b are supported while being shifted in the width direction of the seat body 10 (the thickness direction of the arms 44a and 44b) so as not to interfere with each other. Both inner arms 44a and 44a are disposed inside the outer arms 44b and 44b. One end sides of the inner arm 44a and the outer arm 44b are respectively supported on the side portions of the first moving base 41 so as to be tiltable in the vertical direction via the support shafts 44c and 44d.
As shown in FIG. 7, the other ends of the inner arm 44a and the outer arm 44b are connected to the side portion of the second moving base 45 so as to be tiltable up and down via support shafts 44e and 44f.
Cam plates 47 and 47 are attached to both sides of the rotation base 31 so as to correspond to the left and right inner arms 44a and 44a. One guide roller 49 is rotatably provided at each of the lower surfaces of the inner arms 44a and 44a and at a position away from the support shaft 44c by a certain distance. The inner arms 44 a and 44 a are supported by the cam plates 47 and 47 in a state where the guide rollers 49 and 49 are in contact with the upper surface of the cam plate 47 so as to be able to roll. Both cam plates 47, 47 are inclined in a direction in which a certain range on the front side (a certain range on the left end side in FIGS. 2 to 5) is lowered forward. Other ranges are formed horizontally.
Therefore, in the process in which the first moving base 41 moves to the outside of the passenger compartment by the operation of the first slide drive mechanism 70, while the guide rollers 49, 49 roll respectively in the horizontal range of the cam plate 47, FIG. As shown in FIG. 3, the inner and outer arms 44a and 44b move in parallel without tilting, and accordingly, the second moving base 45 and the seat body 10 move horizontally toward the passenger compartment. When the first moving base 41 further moves outside the passenger compartment and reaches a certain range on the front end side of the moving range, the guide rollers 49 and 49 roll on the inclined surfaces of the cam plate 47, respectively. At this stage, the four-bar linkage mechanism 44, 44 tilts downward (counterclockwise in FIGS. 2 to 5), so that the seat body 10 moves downward while moving to the outside of the passenger compartment.
On the contrary, at the stage where the first moving base 41 moves toward the vehicle interior side, the four-bar linkage mechanisms 44, 44 are tilted upward and the second moving base 45 and the seat body 10 are moved in the vehicle interior. Ascends while moving inward, then moves horizontally. As the first moving base 41 moves in the vehicle width direction as described above, the two-bar linkage mechanism 44, 44 tilts up and down, so that the second moving base 45 moves up and down while moving in the vehicle width direction. Thus, the seat body 10 moves up and down while moving in the vehicle width direction. It should be noted that the lengths and support shafts of the inner and outer arms 44a and 44b in both the four-bar linkage mechanisms 44 and 44 are such that the second moving base 45 and the seat body 10 are always displaced in parallel without tilting back and forth and left and right. The distances between 44c, 44d, 44e, and 44f are set appropriately.

Next, the second slide mechanism 55 includes a pair of left and right second linear motion mechanisms 50 and a second slide drive device 52. As shown in FIG. The seat body 10 is supported via the second linear motion mechanisms 50 and 50. The sheet body 10 is supported by the second linear motion mechanisms 50, 50 so as to be slidable in the vehicle width direction (direction perpendicular to the paper surface in FIG. 6) with respect to the second moving base 45. Each of the second linear motion mechanisms 50 and 50 includes a guide rail 51a and a moving body 45a that is movably mounted on the guide rail 51a. The left and right guide rails 51a and 51a are attached to the lower surface of the seat base 51 in parallel with a certain distance from each other.
The left and right moving bodies 45a, 45a are fixed to the upper surface of the second moving base 45 with rubber cushion members 48 interposed therebetween. By being fixed with the cushion member 48 interposed therebetween, the upper side, that is, the moving bodies 45a and 45a, the guide rails 51a and 51a, and the seat body 10 are supported by the floating structure. By being supported by this floating structure, an error in the assembly position of the guide rail 51a and the moving body 45a or a variation in parallelism between the left and right guide rails 51a and 51a is absorbed.
The seat body 10 is fixed to the upper surface of the seat base 51. Between the second moving base 45 and the seat base 51, a second slide drive device 52 having a drive motor 52a, a screw shaft 52b rotated by the drive motor 52a, and a nut 52c engaged with the screw shaft 52b. Is provided. The drive motor 52 a is attached to the lower surface of the seat base 51. The screw shaft 52b is supported on the lower surface of the seat base 51 so as to be rotatable about its axis. The nut 52 c is fixed to the upper surface of the second moving base 45.

For this reason, when the drive motor 52a of the second slide mechanism 55 is activated and the screw shaft 52b is rotated with the seat body 10 facing the door opening K side, the nut 52c moves along the screw shaft 52b. Thus, the seat body 10 moves in the vehicle width direction with respect to the second moving base 45.
Thus, the seat body 10 is moved in the vehicle width direction in two stages by the lifting mechanism 43 and the second slide mechanism 55. However, the movement of the seat body 10 by the second slide mechanism 55 is a 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 43 is a movement in the vehicle width direction as described above. In addition to the movement in the vertical direction, the sheet main body 10 moves along an arc-shaped locus that swells upward. That is, when the first movement base 41 is moved from the retracted position to the advanced position, the four-bar linkage mechanism 44 rotates downward (in the direction in which the front end side is displaced downward) while moving to the outside of the passenger compartment. As a result, the second moving base 45 and thus the seat body 10 moves (lowers) to the outside of the passenger compartment along an arcuate locus. Conversely, when the first moving base 41 is moved from the forward position (position outside the passenger compartment) to the backward position (position inside the passenger compartment), both the four-bar linkage mechanisms 44, 44 move toward the passenger compartment. Then, the sheet body 10 is rotated upward (in the direction in which the leading end side is displaced upward), whereby the sheet body 10 is returned from the lowered position to the raised position along an arcuate locus.
Next, as shown in FIG. 7, the rear end portions (end portions on the vehicle interior side) of the respective guide rails 51 a of the left and right second linear motion mechanisms 50, 50 are respectively at the time of interference with the first moving base 41. A cushioning member 60 for reducing the impact is attached. In the present embodiment, both the buffer members 60, 60 are caps made of synthetic resin, and can be easily attached to and detached from the rear end portion of the guide rail 51a by utilizing the elasticity thereof.
On the other hand, the first moving base 41 is provided with vertical wall portions 41a and 41a projecting up and down. In the present embodiment, the vertical wall portions 41a and 41a are provided as wall portions for rotatably supporting the inner arm 44a.
When the seat body 10 is returned to the vehicle interior side by the second slide mechanism 55, the guide rails 51a and 51a respectively pass by the side of the vertical wall portion 41a. For this reason, in the state where the seat body 10 supported by the floating structure moves to the vehicle interior side while slightly swinging left and right, the rear end portion of the guide rail 51a may interfere with the vertical wall portion 41a. In the present embodiment, the front end of the vertical wall 41a that may interfere with the rear end of the guide rail 51a has a direction in which the guide rail 51a is separated from the vertical wall 41a during the interference (the guide rail 51a A relief inclined surface 41b for escaping to a regular movement route) is formed.
Further, arc-shaped (R-shaped) relief inclined surfaces 60 a are also formed on the outer corners of both the buffer members 60, 60. When the relief inclined surface 60a of the buffer member 60 and the escape inclined surface 41b on the first moving base 41 side interfere (slidably contact), both guide rails 51a and 51a are returned more smoothly to the normal moving path side. . In addition, although the circular-arc-shaped inclined surface was illustrated as an escape inclined surface provided in the buffer member 60 side, it may replace with this and may form in a flat escape inclined surface (so-called C surface).

The vehicle seat device 1 configured as described above operates as follows, whereby the seat body 10 is moved from the passenger compartment to the outside of the passenger compartment, and the seated person can get out of the passenger compartment from the passenger compartment. On the contrary, the seat body 10 is returned from the passenger compartment to the passenger compartment, and the seated person can get into the seating position (passenger seat position) in the passenger compartment.
First, as shown by a two-dot chain line in FIG. 1, at a seating position where the seated person is facing the front of the vehicle, the drive motor 24 a of the forward / backward movement mechanism 20 is activated to the forward rotation side, so that the seat body 10 moves forward. Slide. As a result, the rotation motor 32 of the rotation mechanism 30 is activated to the forward rotation side, whereby the seat main 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 about 90 degrees and is directed toward the door opening K, the sliding direction of the first slide mechanism 42 and the second slide mechanism 55 is the direction along the vehicle width direction. FIG. 2 shows the state at this stage.
Thus, in a state where the seat body 10 is directed to the door opening K side, first, the drive motor 52a of the second slide mechanism 55 is activated to the forward rotation side, so that the seat body 10 passes through the door opening K and moves outside the vehicle compartment. Moved horizontally. FIG. 3 shows a state where the seat body 10 has been slid to the front end of the slide range by the second slide mechanism 55.

When the movement of the seat body 10 to the outside of the passenger compartment by the second slide mechanism 55 is completed, the drive motor 71 of the first slide drive device 70 in the elevating mechanism 43 is activated next, and the first movement base 41 is moved to FIG. It moves toward the door opening K from the retracted position shown. As a result, the seat body 10 moves together with the four-bar linkage mechanisms 44, 44 to the outside of the passenger compartment. Further, as described above, when the four-bar linkage mechanism 44, 44 moves to the outside of the passenger compartment, the inner arms 44a, 44a and the outer arms 44b, 44b rotate downward about the support shafts 44c, 44d, respectively. For this reason, the seat body 10 descends to a height closer to the road surface while moving to the outside of the passenger compartment. FIG. 4 shows a state in which the first movement base 41 has been slid to the front end position of the slide range by the first slide mechanism 42. At this stage, the seat body 10 has moved a sufficient distance to the outside of the passenger compartment and has been lowered to a height close to the road surface, so that the seated person can easily transfer to a wheelchair placed on the seat body 10 for example.
After the transfer from the seat body 10 to the wheelchair is completed and there are no seated persons on the seat body 10, or after the transfer from the wheelchair to the seat body 10 is completed and the seated person sits on the seat body, the seat body 10 is The vehicle is returned to the passenger compartment by the reverse operation. That is, first, when the drive motor 71 of the lifting mechanism 43 is activated in the reverse rotation direction, the first movement base 41 moves to the vehicle interior side. As a result, both the four-bar linkage mechanisms 44, 44 are tilted upward, and the seat body 10 is returned to the vehicle interior side while rising.
As shown in FIG. 3, when the first moving base 41 is returned to the rear end position of the slide range by the first slide mechanism 42, the lifting operation of the seat body 10 is completed. From this state, the seat body 10 is returned horizontally to the vehicle interior side by the operation of the second slide mechanism 55. At the stage where the seat body 10 is returned to the vehicle interior side by the operation of the second slide mechanism 55, the guide rails 51a, 51a of both the second linear motion mechanisms 50, 50 are returned to the vehicle interior side together with the seat body 10. Therefore, as shown in FIGS. 5 and 7, the guide rails 51 a and 51 a gradually approach the first moving base 41 as the seat body 10 moves backward.

The first moving base 41 is provided with vertical wall portions 41a and 41a that protrude vertically. The rear end portion of the guide rail 51a passes next to the vertical wall portion 41a. On the other hand, the moving bodies 45a and 45a of the second linear motion mechanisms 50 and 50 are respectively attached to the second moving base through the cushion member 48 made of elastic rubber, whereby the seat body 10 is rubber floating. Supported by the structure, the assembly error between the guide rail 51a and the moving body 45a is absorbed, and the variation in parallelism between the left and right guide rails 51a, 51a is absorbed. On the other hand, according to this floating structure, the seat body 10 is returned to the vehicle interior side while the cushion members 48 and 48 are elastically deformed and slightly displaced (or swayed) to the left and right of the seat body 10. In this case, the rear end portions of the guide rails 51a, 51a of the second slide mechanism 55 that moves integrally with the seat body 10 may interfere with the vertical wall portions 41a, 41a of the first moving base 41. is there.
However, according to this embodiment, it attaches so that the resin-made buffer member 60 may be covered to the rear-end part of both guide rails 51a and 51a, respectively. Further, the rear end portions of the guide rails 51a and 51a may interfere with the vertical wall portions 41a and 41a of the first moving base 41, and the rear end portions of the guide rails 51a and 51a are separated from the vertical wall portions 41a, respectively. An inclined surface 41b for displacing is provided, and an inclined surface having the same function is formed on the buffer member 60 in accordance with the inclined surface 41b.
Therefore, the rear end portions of the guide rails 51a and 51a of the second slide mechanism 55 interfere with the vertical wall portions 41a and 41a when the seat body 10 is returned to the vehicle interior side by the operation of the second slide mechanism 55. Even so, the shock is absorbed by the buffer members 60 and 60, and the inclined surface of the buffer member 60 interferes (slidably contacts) with the inclined surface 41b of the vertical wall portion 41a, so that the guide rail 51a is in contact with the vertical wall portion. It is displaced in the direction away from 41a, and thereby the impact on the seat body 10 and the seated person is greatly suppressed.

According to the vehicle seat device 1 of the present embodiment configured as described above, the guide rails 51a and 51a of the second slide mechanism 55 are moved in accordance with the movement of the seat body 10 that is floatingly supported toward the vehicle interior side. Even if it is a case where it interferes with the vertical wall parts 41b and 41b of the 1 movement base 41, the impact can be relieved. That is, the seat body 10 is movably supported using a linear motion mechanism (second linear motion mechanism 50) including a guide rail 51a and a movable body 45a movably mounted on the guide rail 51a. As a result of the guide rail 51a being attached to the seat main body 10 side, in a configuration in which the guide rail 51a moves integrally with the seat main body 10, the impact at the time of interference between the guide rail 51a and the first moving base 41 on the slide support side. Is absorbed by the buffer member 60.
In addition, an inclined surface 41b is provided on the vertical wall portion 41a of the first moving base 41 where both the buffer members 60, 60 (the rear end portion of the guide rail 51a) interfere. For this reason, when the buffer member 60 interferes (sliding contact) with the inclined surface 41b, the rear end portion of the guide rail 51a is displaced inward by the sliding contact action with respect to the inclined surface 41b. It can be greatly reduced.
Further, since the impact at the time of interference can be mitigated, the mechanism such as the first and second slide mechanisms 42 and 55 can be prevented from being damaged. In this respect, the durability of the vehicle seat device 1 can be improved. Can be increased.

The embodiment described above can be implemented with various modifications. For example, the buffer member 60 made of synthetic resin is exemplified, but a buffer member made of rubber may be used. Moreover, although the buffer member 60 that can be easily attached and detached, such as a cap, has been illustrated, it may be configured to be fixed by screws or adhesion.
In addition, relief sloping surfaces 41b are formed on the vertical wall portions 41a and 41a of the first moving base 41, and buffer members 60 and 60 are attached to the rear ends of the guide rails 51a and 51a to cushion the relief sloping surfaces 41b. Although the case where the rear end portion of the guide rail 51a interferes with the member 60 interposed is illustrated, the buffer member 60 may be omitted. Even if the rear end portion of the guide rail 51a not provided with the buffer member 60 directly escapes and interferes with the inclined surface 41b, the movement direction of the guide rail 51a and hence the seat body 10 is corrected, and the same effect as described above can be obtained. it can.
Furthermore, when the buffer member 60 is omitted, a configuration may be adopted in which an inclined surface is directly provided at the rear end portion of the guide rail 51a. Moreover, it is good also as a structure which omits one of the relief inclined surface 41b of the vertical wall part 41a, or the inclined surface by the side of the guide rail 51a. Even if the inclined surface (relief inclined surface) is formed only on one of the vertical wall portion 41a and the guide race 51a, both guide rails 51a and 51a are returned to the normal moving path side when both interfere. .
In addition, the inclined surfaces 41b and 41b are formed at the inner corners of the two vertical wall portions 41a and 41a (the corners on the surfaces facing each other) to correct the guide rails 51a and 51a closer to each other. Although the structure which performs is illustrated, it is good also as a structure which corrects the both guide rails 51a and 51a in the direction spaced apart mutually by forming the same relief inclined surface in the outer corner | angular part of the vertical wall parts 41a and 41a.
Furthermore, although the electric second slide mechanism 55 provided with the second slide drive device 52 has been illustrated, the drive device 52 is eliminated and the seat body 10 is moved with respect to the second movement base 45 by manual operation. It is good.
Further, the back-and-forth movement mechanism 20 and the rotation mechanism 30 may be omitted.
Furthermore, although it is a case where it applies to the passenger seat of a vehicle, and illustrated the structure which makes the seat main body 10 enter / exit through the door opening K of the vehicle side part, the vehicle seat apparatus according to the present invention includes, for example, a driver seat, The present invention can be similarly applied to a vehicle seat apparatus configured to allow the seat body to enter and exit through the rear seat or the back door.

1 is a plan view of a vehicle in which a vehicle seat device according to an embodiment of the present invention is applied to a passenger seat. FIG. 2 is a view taken in the direction of arrow (2) in FIG. This figure has shown the state by which the sheet | seat main body was orient | assigned to the door opening part side. It is the figure which looked at the vehicle seat apparatus from the vehicle rear side. This figure shows a state in which the seat body is moved to the outside of the passenger compartment by the second linear motion mechanism. It is the figure which looked at the vehicle seat apparatus from the vehicle rear side. This figure shows a state where the seat body is moved to the outside of the passenger compartment by the outdoor moving mechanism and lowered to a height close to the road surface. FIG. 5 is a front view of the first slide mechanism, taken along line (5)-(5) in FIG. 4. FIG. 6 is a front view of the second slide mechanism, as viewed from (6) in FIG. It is a top view of an outdoor moving mechanism. FIG. 8 is an enlarged view of a portion (8) in FIG. 7 and is a plan view showing a state where a guide rail of a second slide mechanism interferes with a first movement base.

Explanation of symbols

M ... Vehicle K ... Door opening 1 ... Vehicle seat device 10 ... Seat body 20 ... Front / rear movement mechanism 23 ... Front / rear slide base 24 ... Front / rear drive device 30 ... Rotation mechanism, 30a ... Outer ring, 30b ... Inner ring 31 ... Rotation base 40 ... outdoor movement mechanism 41 ... first movement base 42 ... first slide mechanism 43 ... elevating mechanism 44 ... four-bar linkage mechanism, 44a ... inner arm, 44b ... outer arm 45 ... second movement base 46 ... first linear movement mechanism, 46a ... moving body, 46b ... guide rail 47 ... cam plate 50 ... second linear motion mechanism 52 ... second slide drive device 55 ... second slide mechanism 60 ... buffer member 70 ... first slide drive device 71 ... drive motor 72 ... Screw shaft 73 ... nut

Claims (4)

A vehicle seat device including a seat body and an outdoor movement mechanism that moves the seat body downward while moving the seat body to the outside of the passenger compartment through a door opening,
The outdoor movement mechanism is supported on the vehicle floor via a first slide mechanism so as to be movable toward the door opening, and supported on the first movement base so that one end side thereof can be tilted up and down. A four-joint link mechanism that tilts up and down with the movement of the first movement base, and a second joint that is supported to be tiltable up and down and connected to the first movement base. A moving base; and a sheet holder that is supported by the second moving base so as to be movable toward the door opening via a second slide mechanism and supports the seat body,
The second slide mechanism includes a guide rail and a movable body movably mounted on the guide rail, the guide rail is fixed to the seat body, and the movable body is fixed to the second moving base. ,
When the rear end portion of the guide rail interferes with the first movement base while the seat body moves to the vehicle interior side by the second slide mechanism, the guide rail escapes to a position where the interference is eliminated. A vehicle seat in which one or both of the first moving base and the guide rail that interfere with each other are provided with a relief inclined surface that is inclined with respect to the moving direction of the guide rail. The vehicle seat device according to claim 1, wherein a buffer member is provided at a rear end portion of the guide rail to reduce an impact caused by interference between the guide rail and the first moving base. Sheet device. The vehicle seat device according to claim 2, wherein the buffer member is provided with a relief inclined surface. 3. The vehicle seat device according to claim 2, wherein a resin cap having elasticity is used as the buffer member, and the cap is detachably attached to a rear end portion of the guide rail using the elasticity. Vehicle seat device.

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