JP2005112237A - Vehicle seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a slide movement type vehicle seat capable of solving a problem in a conventional vehicle seat wherein the seating height of the seat body in a cabin is increased since a slide frame for moving the seat body between the inside and the outside of a cabin was fixed in a tilted state in the vehicle seat enabling the easy getting in and out by lowering the seat body to a height near a road surface while moving the seat body to the outside of the cabin after the seat body is rotated from the straight forward position of the vehicle to a door opening side facing position. <P>SOLUTION: The slide frame 81 for lowering the seat body 10 while moving the seat body 10 to the outside of the cabin is formed so that its cabin outside end part can be lowered and tilted while moving to the cabin outside position and that the cabin outside end part can be raised and returned generally horizontally while moving to the cabin inner position. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vehicle seat suitable as a seat for a welfare vehicle that enables an elderly person or a disabled person (hereinafter also simply referred to as an occupant) to easily get on and off the vehicle.

In this type of seat, for example, as disclosed in Japanese Patent Application Laid-Open No. 2001-130293 or Japanese Patent Application Laid-Open No. 2002-178804, a seat body on which an occupant is seated is directed to a position facing the front of the vehicle and a door opening side. The seat body can be moved to the outside of the vehicle compartment from the position facing the door opening side through the door opening portion, so that the seated person can sit on the seat body while remaining seated on the seat body. You can easily get on and off.
The tilting slide mechanism for moving the seat body in the vehicle width direction between the vehicle interior side and the vehicle interior outside moves the seat body to a lower position (height closer to the road surface) outside the vehicle interior. This makes it possible to easily move the occupant (seater) outside the passenger compartment to the seat body or from the seat body to a wheelchair or the like.
In addition, an inclined two-stage slide mechanism that slides in two stages is used for the inclined slide mechanism. By using a two-stage slide mechanism that goes down to the outside of the passenger compartment, the slide mechanism can be stored compactly in the passenger compartment, but when the seat body is moved out of the passenger compartment, the seat body is moved a sufficient distance outside the passenger compartment. Thus, the seat body can be reliably moved to a height close to the road surface.
JP 2001-130293 A JP 2002-178804 A

However, when an inclined slide mechanism is conventionally used as a moving means in the vehicle width direction, the rear side of the slide rail (vehicle interior side) is fixed in a state of being inclined in a direction higher than the front side. There is a problem that the height of the main body in the passenger compartment (the so-called hip point of the seated person, hereinafter also referred to as “sitting height”) increases. In order to lower the seating height in the passenger compartment of the seat body, it is conceivable to loosen the inclination angle of the slide rail and lower the rear part, but in this case, the sliding distance is increased to increase the door opening. If the seat body is not moved to a position away from the seat, the height of the seat body outside the passenger compartment cannot be reduced.
The present invention is a vehicle seat that uses an inclined slide mechanism as a means for moving the seat body to the outside of the passenger compartment, and is set near the door opening outside the passenger compartment while setting the seating height of the seat body in the passenger compartment low. An object of the present invention is to provide a vehicle seat that can move the seat body to a lower position.

Therefore, the present invention provides a vehicle seat having the structure described in the claims.
According to the vehicle seat of claim 1, when the slide frame moves outside the vehicle compartment and when the seat main body moves outside the vehicle compartment with respect to the slide frame, the seat main body and thus the seated person moves outside the vehicle compartment. Can be moved to. When the slide frame moves to the outside of the passenger compartment, the slide frame tilts in a direction to go down to the outer side of the passenger compartment, and is maintained in a substantially horizontal state in the passenger compartment, so that the seating height of the seat body in the passenger compartment is set lower than before, The seat body can be lowered to a height closer to the road surface outside the passenger compartment. In addition, the seat body can be moved to the outside of the passenger compartment in two stages: movement of the slide frame relative to the vehicle floor and movement of the seat body relative to the slide frame, so the seat body can be moved a large distance with a compact configuration. Thus, the seat body can be reliably lowered to a height close to the road surface.
According to the vehicle seat according to claim 2, when the slide frame moves to the outside of the passenger compartment, the distance between the tilting shaft and the guide portion is reduced, so that the slide frame lowers the outer end of the passenger compartment. Tilt to. On the other hand, when the slide frame moves toward the vehicle interior side, the distance between the tilting support shaft and the guide portion increases, so that the slide frame tilts in the direction to raise the vehicle interior outer end, and finally the vehicle It is held indoors at a substantially horizontal position, whereby the above-described effects can be obtained.
According to the vehicle seat of the third aspect, the seat body is supported so as to be further tiltable up and down with respect to the slide frame. In addition, the seat body is supported by the first support surface of the vehicle floor to move to the outside of the passenger compartment integrally with the slide frame in a predetermined posture. After the slide frame moves to the outer side of the passenger compartment, the seat body is moved to the first support surface. By being supported by the continuous second support surface, the vehicle descends while moving to the outside of the passenger compartment in a predetermined posture. For this reason, the posture of the seat body is not affected by the tilt of the slide frame while the slide frame is tilted in the direction in which the outer end of the passenger compartment is displaced downward while moving to the outer side of the passenger compartment.
According to the vehicle seat of the fourth aspect, the seated person is rotated between the position facing the front of the vehicle and the position facing the door opening while being seated on the seat body, and is directly between the vehicle interior and the exterior. Therefore, the usability of the vehicle seat can be further improved.

  According to the present invention, the seat body height (sitting height of the seated person) is set to be as low as that of the other seats in the passenger compartment, and the seat body is placed on the road surface outside the passenger compartment with a small slide amount. Since the vehicle can be lowered to a near height, it is possible to further improve the usability and usability of the vehicle seat inside and outside the vehicle interior.

Next, an embodiment of the present invention will be described with reference to FIGS. FIG. 1 shows a vehicle M in which the vehicle seat 1 of the present embodiment is applied to a passenger seat. In FIG. 1, the passenger seat door D on the left side of the vehicle (lower side in FIG. 1) is opened, and the seat body 10 is moved from the seating position in the passenger compartment to the outside of the passenger compartment through the door opening K. It is shown.
The vehicle seat 1 of the present example is capable of moving the seat body 10 in the vehicle front-rear direction, and is approximately 90 degrees horizontally between a seating position facing the front of the vehicle and a lateral position facing the door opening K side. Can be rotated. Further, the vehicle seat 1 of the present example moves the seat body 10 in the vehicle width direction (vertical direction in FIG. 1) between the vehicle interior and the exterior of the vehicle in a lateral state facing the door opening K side. Can be moved up and down.
In FIG. 1, the seat main body 10 located at the seating position is indicated by a solid line, and the lateral position facing the door opening K side and the seat main body 10 moved to the outdoor side are indicated by two-dot chain lines.
As shown in FIG. 2, the vehicle seat 1 includes a seat main body 10, a front / rear slide mechanism 20 for moving the seat main body 10 in the vehicle front-rear direction (a direction orthogonal to the paper surface in FIG. 2), and the seat main body 10. The rotating mechanism 30 that rotates between the seating position facing the front of the vehicle and the lateral position facing the door opening K side, and the seat body 10 facing the door opening K side between the vehicle interior and the exterior. The sheet moving mechanism 100 is provided. The sheet moving mechanism 100 has a two-stage slide mechanism including a first slide mechanism 50 and a second slide mechanism 80. Hereinafter, the configuration of each unit will be described. In the following description, unless otherwise specified, a seated person seated on the seat body 10 is used as a reference in the front-rear direction and the left-right direction.

As shown in FIG. 1, the seat body 10 includes a seat cushion 11 (seat portion) and a seat back 12 (backrest). The seat cushion 11 is fixed in a state of being placed on the seat base 13 of the seat holder 57. Although not shown, the seat back 12 includes a reclining mechanism for adjusting a tilt angle with respect to the seat cushion 11.
The front / rear slide mechanism 20 includes U-shaped guide rails 22 and 22 fixed on the floor F of the vehicle M in parallel to the vehicle front-rear direction at a predetermined interval. A front / rear slide base 23 is slidable in the front / rear direction of the vehicle M via the two guide rails 22, 22.
Between both the guide rails 22 and 22, between the vehicle floor F and the front and rear slide base 23, there is a drive motor 24a, a screw shaft 24b rotated by the drive motor 24a, and a nut 24c meshed with the screw shaft 24b. A front-rear drive device 24 is attached. A drive motor 24 a and a screw shaft 24 b are attached to the vehicle floor F side, and a nut 24 c is attached to the lower surface of the front and 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 in the longitudinal direction of the vehicle. The front / rear slide mechanism 20 can move the seat body 10 in the longitudinal direction of the vehicle, thereby adjusting the so-called seat position. A rotation mechanism 30 is disposed on the upper surface of the front / rear slide base 23.

The rotation mechanism 30 is installed on the upper surface of the front / rear slide base 23. The rotation mechanism 30 mainly includes an outer ring 31 and an inner ring 32 that are coaxially and rotatably combined. The outer ring 31 is fixed to the upper surface of the front / rear slide base 23, and the inner ring 32 is attached to the lower surface of the rotation base 33. It is fixed. Although not shown, a rotary motor is attached to the upper surface of the front / rear slide base 23, and the rotational output of the rotary motor is transmitted to the inner ring 32 via a gear transmission mechanism. The seat moving mechanism 100 installed on the upper surface rotates as a unit, and as a result, the seat body 10 rotates as a unit between a position facing the front of the vehicle and a side position facing the door opening K side.
The front / rear slide mechanism 20 and the rotation mechanism 30 can be operated in conjunction with each other by appropriately controlling the drive motor 24a and the rotation motor. That is, the seat body 10 rotates from the position facing the front of the vehicle toward the door opening K while moving toward the front of the vehicle, and conversely from the side position toward the position facing the front of the vehicle while moving toward the rear of the vehicle. It is rotated. As a result, the seat body 10 is smoothly rotated about 90 ° in a limited space without causing the seated person's feet to interfere with, for example, the instrument panel or pillar.
As described above, when the position of the seat body 10 in the vehicle interior in the front-rear direction (so-called seat position) is arbitrarily changed according to the physique of the seated person, the front-rear slide is performed with the rotation mechanism 30 stopped. The mechanism 20 is operated alone.
The sheet main body 10 is installed on the upper surface of the rotation base 33 via the sheet moving mechanism 100. The seat moving mechanism 100 moves the seat body 10 that is directed toward the door opening K by the rotating mechanism 30 in the vehicle width direction (left-right direction in FIG. 2) and is positioned higher than the floor F (in the vehicle interior). It has a function of moving up and down between a seating height) and a height lower than this and close to the road surface.
The sheet moving mechanism 100 mainly includes a sheet holder 57 on which the sheet main body 10 is mounted, a slide frame 81, and first and second slide mechanisms 50 and 80. First, the second slide mechanism 80 will be described. 3 and 5 show details of the second slide mechanism 80. FIG. The second slide mechanism 80 has a function as a drive device that moves a slide frame 81, which is framed in a rectangular shape, between the vehicle interior and the exterior, and includes a drive motor 82, a screw shaft 83 that rotates thereby, and the screw A nut 84 meshed with the shaft 83 is provided. The drive motor 82 is installed on the rotation base 33. The other end side of the screw shaft 83 whose one end side is coupled to the output shaft of the drive motor 82 is supported by a bearing 85 fixed on the rotation base 33 so as to be rotatable about its axis. For this reason, when the drive motor 82 is activated, the screw shaft 83 rotates around the shaft, and thereby the nut 84 moves in the left-right direction (front-back direction as viewed from the seated person) in FIG. The nut 84 is attached to the slide frame 81 side via a tilt bracket 86.

As shown in FIG. 5, the tilt bracket 86 extends from the nut 84 to the left and right sides. At both ends of the tilt bracket 86, side portions of the slide frame 81 are supported via a support shaft 87 so as to be tiltable up and down. In other words, the slide frame 81 is supported by the tilt bracket 86 so as to be able to tilt up and down at a position closer to the rear end (vehicle interior side). On the other hand, a pair of left and right receiving rollers 34, 34 are rotatably provided via brackets 35 at the front end portion (left end portion in FIGS. 3 and 5) of the rotation base 33. The receiving rollers 34 and 34 correspond to an embodiment of the guide portion described in the claims.
The front end side of the slide frame 81 is placed on the receiving rollers 34 and 34. Since the upper ends of the receiving rollers 34 and 34 are set at a position lower than the support shaft 87, the slide frame 81 has a slightly outer end on the vehicle interior side at the retracted position on the vehicle interior side. It inclines in the direction which becomes lower than the part. For this reason, when the drive motor 82 is activated and the nut 84 moves to the front side (left side in FIG. 5), the tilt support portion of the slide frame 81 (the portion supported by the tilt bracket 86 via the support shaft 87, the same applies hereinafter). Therefore, the distance between the tilting support portion and the guide portion (the portions received by the receiving rollers 34 and 34, hereinafter the same) gradually decreases. Moreover, as described above, the upper ends of the receiving rollers 34 and 34 are set at a position lower than the support shaft 87 of the slide frame 81. For this reason, as the slide frame 81 moves to the outside of the passenger compartment, the inclination angle in the direction to go down to the outer side of the passenger compartment gradually increases.
In the present embodiment, as shown by the solid line in FIG. 5, the slide frame 81 is tilted at about 19 ° in a state where the slide frame 81 is returned to the vehicle interior side and the tilt support portion moves to the rearmost side. The positions of the tilting support portion and the guide portion are set so that Further, as shown by a two-dot chain line in FIG. 5, in a state where the slide frame 81 has moved to the outside of the passenger compartment and the tilt support portion has moved to the foremost side, the tilt angle of the slide frame 81 is about 30 °. The position of each part and the dimensions of related members are set.
Cam plates 88 and 88 are attached to left and right sides of the slide frame 81 symmetrically. Cam surfaces 88a are formed on the upper surfaces of both cam plates 88, 88, respectively. As shown in FIG. 8, the cam surface 88a includes a rear guiding portion 88aa, a central holding portion 88ab, and a front horizontal portion 88ac. These functions will be described later.

Next, details of the sheet holder 57 and the first slide mechanism 50 are shown in FIGS. 4 and 6. Both the slide plates 51, 51 are arranged in a facing direction as shown in the figure, and the first slide mechanism 50 is arranged between them as viewed in plan. The seat base 13 is fixed on the upper surfaces of the slide plates 51 and 51. Both the slide plates 51 and 51 and the sheet base 13 constitute a sheet holder 57.
The first slide mechanism 50 has a function as a drive device for sliding the sheet holder 57 with respect to the slide plate 81 in the direction along the side frame, and includes a drive motor 53 attached to the front end of the slide frame 81 and Thus, a screw shaft 54 rotating around the shaft and a nut 55 engaged with the screw shaft 54 are provided. One end portion of the screw shaft 54 is connected to the output shaft of the drive motor 53, and the other end portion is rotatably supported by the rear portion of the slide frame 81.
From both side portions of the nut 55, support shaft portions 55a and 55a are provided so as to protrude sideways. The rear end portions of the slide plates 51 and 51 are connected to each other through the support shaft portions 55a and 55a so as to be tiltable up and down. For this reason, both the slide plates 51, 51 and consequently the seat body 10 are supported so as to be tiltable up and down around the support shafts 55a, 55a.
In a state where the seat holder 57 is located at a rear end position in a range in which the seat holder 57 is slidable with respect to the slide frame 81 by the first slide mechanism 50, the tilt fulcrum of the seat holder 57 (the axis of the support shaft portion 55a), The tilting fulcrum of the slide frame 81 (the axis of the support shaft 87) coincides with the same axis.
When the slide frame 81 is slid by the second slide mechanism 80, the seat holder 57 and the first slide mechanism 50 move together therewith.

Guide rollers 56 are rotatably attached to the lower portions of the outer surfaces of the slide plates 51, 51, respectively. Both guide rollers 56 and 56 are grounded to the upper surface of the rotation base 33 so as to be able to roll. For this reason, in the stage where the drive motor 82 is activated and the slide frame 81 moves to the outside of the vehicle compartment, and the seat holder 57 moves together with the slide frame 81 to the outside of the vehicle compartment, both guide rollers 56, 56 are used. Rolls on the rotating base 33 toward the outside of the passenger compartment.
Tilt convex portions 33a and 33a are provided in the vicinity of the front end portion of the rotation base 33 and on the path along which the guide rollers 56 and 56 move. When the seat holder 57 moves together with the slide frame 81 along with the movement of the slide frame 81 to the outside of the passenger compartment (forward as viewed from the seated person), the guide rollers 56 and 56 move on the rotary base 33, respectively. It rolls and rides on the tilting convex part 33a. When the guide rollers 56 and 56 run on the tilting projections 33a and 33a, the sheet holders 57 and 57 are displaced upwards with the support shafts 55a and 55a as the center (clockwise direction in FIG. 6). Therefore, the seat body 10 is tilted in the direction in which the upper portion thereof is displaced rearward (backward tilt), so that the posture of the seated person seated on the seat body 10 is lowered by moving the head backward. Change. The upper surface of the rotation base 33 and the tilting convex portion 33a correspond to an embodiment of the first support surface described in the claims. As the guide rollers 56 and 56 roll on the first support surface, the tilting position in the vertical direction around the support shaft portion 55a of the sheet holder 57 is maintained at a predetermined position. The sitting posture is maintained at a predetermined position.

The positions of the tilting projections 33a and 33a are the stage where the seat holder 57 and the slide frame 81 are integrally moved to the outside of the passenger compartment, and the seat body 10 is moved rearward before the seated person passes the door opening K. It is set to be tilted. According to this, when the seat main body 10 moves to the outside of the vehicle interior or to the interior of the vehicle interior and passes through the door opening K, the seated person tilts backward in advance to lower the head. Since it can pass through the door opening K in a state (securing head clearance), it is possible to avoid the head of the seated person from interfering with the upper edge of the door opening K. The positions and heights of the tilting convex portions 33a and 33a (the height of the rising from the upper surface of the rotating base 33) and the like are appropriately set so as to satisfy this condition.
After the seat body 10 (the seated person) has passed through the door opening K, the guide rollers 56 and 56 get over the tilting convex portion 33a and are returned to the rotation base 33, whereby the seat body 10 is moved toward the rear side of the seat body 10. The inclination is returned and the seated person is returned to the normal sitting posture.
When the slide frame 81 is tilted and reaches the slide end outside the passenger compartment, the slide frame 81 is inclined at about 30 °. When the drive motor 53 of the first slide mechanism 50 is activated in this state, the screw shaft 54 is activated. Rotates around its axis, and the seat holder 81 moves outward along the slide frame 81 while moving downward.
In a state where the seat holder 57 is located on the rearmost side (inside the room) with respect to the slide frame 81 (a state where the support shaft portion 55a and the support shaft 87 coincide with each other coaxially), the guide roller 56 has a cam surface 88a. Located at a position away from the rear end. On the other hand, when the sheet holder 57 moves relative to the slide frame 81 relative to the outside of the passenger compartment (left side in the figure), the guide roller 56 rides on the cam surface 88a of the cam plate 88, and thereafter the sheet holder 57 With the relative movement, the guide roller 56 rolls on the cam surface 88a toward the outside of the passenger compartment.
As described above, the cam surfaces 88a of the two cam plates 88, 88 are provided with the rear guiding portion 88aa, the central holding portion 88ab, and the front horizontal portion 88ac. As shown in FIGS. 7 and 8, when the slide frame 81 has moved to the slide end outside the passenger compartment, the cam plates 88, 88 are inclined at about 30 ° in the direction in which the front horizontal portion 88ac is lowered. In this state, the rear guiding portion 88aa is substantially flush with the upper surface of the turntable 33. The guiding portion 88aa, the holding portion 88ab, and the horizontal portion 88ac, as described later, move the seat body 10 and the seated person in a horizontal seating posture (a posture in which the seat base 13 is horizontal) as the seat holder 57 moves with respect to the slide frame 81. Alternatively, a function of holding the tilt position of the seat holder 57 at a predetermined position in order to maintain a position tilted slightly rearward from the seating position (position where the front side of the seat base 13 is higher than the rear side). Have. Accordingly, the cam surface 88a of the cam plate 88 corresponds to an embodiment of the second support surface described in the claims. As the guide roller 56 rolls on the second support surface, the seat body 10 is held in a posture that allows the seated person to sit on the seat body 10 with peace of mind.

The vehicle seat 1 of the present embodiment configured as described above operates as follows. In the vehicle seat 1 when the vehicle is traveling and the like, the seat holder 57 is a slide frame when the seat body 10 is positioned in front of the vehicle traveling direction on the vehicle interior side (a state indicated by a solid line in FIG. 1). Therefore, the center of tilting of the seat holder 57 (the axis of the support shaft 55a) and the center of tilting of the slide frame 81 coincide with each other. In the state of being located in the front direction, the slide frame 81 is inclined at an angle of about 5 ° in a direction descending to the vehicle front side. Therefore, the slide frame 81 is positioned in a state where there is almost no dimensional difference in the height direction between the front part and the rear part (substantially horizontal state), so that the seat surface height (seat position) of the seat body 10 is conventionally increased. Is set lower.
In this front-facing state, an operation switch for forward movement or backward movement of an operation panel (not shown) is turned on, whereby the drive motor 24a is activated and the seat body 10 is rotated by the rotation mechanism 30, the slide frame 81, and the seat. The seat position of the seat body 10 can be adjusted by moving the holder 57 in the vehicle front-rear direction.
Next, when the occupant gets out of the passenger compartment, when the operation switch for getting off the operation panel (not shown) is turned on, the front / rear slide mechanism 20 and the rotation mechanism 30 are operated in conjunction with each other, so that the seat body 10 slides forward of the vehicle while rotating from the position facing the front of the vehicle toward the door opening K side. Accordingly, the seat body 10 or the seated person's feet, knees, or the like can be rotated to the door opening K side so that the seat panel 10 or the door opening K does not interfere. The front / rear slide mechanism 20 and the rotation mechanism 30 operate while the operation switch is turned on. When the on operation of the operation switch is stopped, the forward / backward movement and rotation of the seat body 10 are stopped on the spot.
When the seat body 10 is directed toward the door opening K (the state indicated by a solid line in FIG. 2), this is detected by detection means such as a sensor (not shown), and based on this, the second slide mechanism 80 The drive motor 82 is automatically activated, and the slide frame 81 starts to slide to the outside of the passenger compartment. The operation of sliding the slide frame 81 to the outside of the passenger compartment is continued while the operation switch is turned on. When the on operation of the operation switch is stopped, the slide operation of the slide frame 81 is stopped. The slide frame 81 is tilted in a direction (counterclockwise direction in FIG. 2) that displaces the front end of the vehicle compartment outside downward about the support shaft 87 while sliding to the vehicle compartment outside.

As the slide frame 81 slides outside the vehicle compartment, the seat holder 57 also slides outside the vehicle compartment. At this stage, the tilting fulcrum of the seat holder 57 (the axis of the support shaft part 55a) coincides with the tilting fulcrum of the slide frame 81 (the axis of the support shaft 87). For this reason, the slide frame 81 tilts downward while sliding toward the outside of the passenger compartment, while the seat holders 57 and 57 slide horizontally while rolling the guide rollers 56 and 56 on the rotary table 33.
When the slide frame 81 slides to the outside of the passenger compartment, the interval between the tilting fulcrum (support shaft portion 87) and the receiving roller 34 is reduced, so that the inclination angle of the slide frame 81 is gradually increased. As shown in FIG. 5, in this embodiment, when the tilting fulcrum moves most out of the passenger compartment, the slide frame 81 is set to be inclined at about 30 °. Considering that the conventional tilt angle is about 19 °, the tilt angle of the slide frame 81 is significantly larger than the conventional tilt angle.
Immediately before the slide frame 81 reaches the slide end on the outside of the passenger compartment, the guide rollers 56 and 56 of the seat frame 57 ride on the tilting projections 33a on the rotary table 33, whereby the seat body 10 moves the support shaft 55a. The seat is tilted in the direction of displacing the front end side upward, so that the seat occupant and the seat body 10 are tilted to the rear side at an appropriate angle, so that the head of the seat occupant is lowered to a lower position on the rear side. Moving. While the seat body 10 and the seated person are tilted rearward, the slide frame 81 is further slid to the outside of the passenger compartment, so that the seat body 10 and the seated person move the door opening K from the passenger compartment side to the outer side of the passenger compartment. pass.

Thus, when the slide frame 81 slides outside the vehicle compartment while increasing the inclination angle from about 5 ° to about 30 ° and reaches the slide end outside the vehicle compartment, this is detected by the detection means (not shown). Based on this, the drive motor 53 is activated and the seat holder 57 starts to slide further out of the passenger compartment. As shown in FIG. 7, when the slide frame 81 reaches the sliding end outside the vehicle compartment, the rear end portion (end portion on the vehicle interior side) of the cam plate 88 faces the front end surface of the rotation base 33, thereby The cam surface 88a of the cam plate 88 and the upper surface of the rotation base 33 are in a state of being substantially flush with each other. For this reason, when the drive motor 53 is activated and the seat holder 57 starts to slide further toward the outside of the passenger compartment with respect to the slide frame 81, both guide rollers 56, 56 are moved from the upper surface of the rotary table 33 to the cam surface 88 a of the cam plate 88. Transfer to (guidance part 88aa).
Thereafter, while the both guide rollers 56 and 56 roll on the cam surface 88a, the seat holder 57 slides further outside the passenger compartment while descending along the slide frame 81 inclined at an angle of about 30 °. At this stage, the tilting fulcrum (support shaft portion 55 a) of the seat holder 57 moves to the outside of the passenger compartment while descending along a straight path along the slide frame 81.
On the other hand, the guide rollers 56, 56 are respectively moved from the guide portion 88aa of the cam surface 88a to the holding portion 88ab and from the holding portion 88ab to the horizontal portion in accordance with the movement of the seat frame 57 and the seat body 10 to the outside of the passenger compartment. Rolled to 88ac in order. Both guide rollers 56 and 56 are rolled to the holding portion 88ab via the guide portion 88aa, so that the seat body 10 and the seated person are held in a slightly tilted posture. By moving the seated person in this posture, the seat moving device 100 can be operated with peace of mind in a stable posture. When the slide operation of the seat holder 57 proceeds and the guide rollers 56 and 56 reach the horizontal portion 88ac from the holding portion 88ab, the seat body 10 and the seated person are returned to the horizontal posture. In the present embodiment, the cam surfaces 88a, 88a of the cam plates 88, 88 are each formed in a shape that satisfies this condition.
Note that the movement of the seat holder 57 relative to the slide frame 81 (the activation state of the drive motor 53) is maintained while the operation switch is turned on. When the on operation of the operation switch is stopped, the movement of the seat holder 57 relative to the slide frame 81 is stopped, and therefore the movement of the seat body 10 to the outside of the passenger compartment is stopped on the spot.
When both guide rollers 56, 56 reach the horizontal portion 88ac and the seat body 10 reaches the moving end outside the passenger compartment, this is detected by a detection means (not shown), and the drive motor 53 is automatically stopped based on this. Thus, the movement operation of the seat body 10 to the outside of the passenger compartment is completed. At the moving end outside the passenger compartment, the seat body 10 is lowered to a height close to the road surface, so that a transfer operation between the seat body 10 and, for example, a wheelchair can be easily performed.
In order to return the seat body 10 moved to the outside of the passenger compartment to the passenger compartment, an operation switch for boarding an operation panel (not shown) may be turned on. By continuing to turn on the operation switch for boarding, the seat body 10 is returned from the outside of the passenger compartment to the position facing the front in the passenger compartment by reversing the above-described operation.

According to the vehicle seat 1 of the present embodiment configured as described above, the first and second slide mechanisms 50 and 80 are gradually inclined as the seat body 10 moves outward from the passenger compartment. In the state where the seat body 10 is returned to the vehicle interior, since the seat holder 57 and the slide frame 81 are positioned substantially horizontally, the seat moving device 100 is more compactly stored in the height direction than before. Accordingly, the seat surface height (hip point) of the seat body 10 can be made lower than before. Since the seat surface height of the seat body 10 can be set low, the seated person can sit at the same height as other occupants in the passenger compartment, and the seated person seated on the vehicle seat 1 can thereby be seated. The feeling of alienation will not be experienced in the passenger compartment.
Further, the slide frame 81 can be inclined at a larger angle than before while the seat surface height of the seat occupant is set low as described above, so that the seat body 10 and the seat occupant can be moved with a smaller slide amount than before. The vehicle can be lowered to a height closer to the road surface outside the passenger compartment, thereby making it easier to transfer between the seat body 10 and the wheelchair outside the passenger compartment, and reducing the burden on the caregiver. be able to.
Further, the seat body 10 and the seated person are moved while the first and second slide mechanisms 50 and 80 are operated to move the seat body 10 from the vehicle interior to the vehicle interior or vice versa. Therefore, the seat occupant is prevented from interfering with the door opening K, and can move between the vehicle interior and the exterior in a stable posture.

Various modifications can be made to the embodiment described above. For example, the front / rear slide mechanism 20 and the rotation mechanism 30 can be omitted.
If there is a margin in the height of the door opening K, the tilting projections 33a and 33a are omitted, and the tilting operation of the seat body 10 when the seat body 10 passes through the door opening K is omitted. Also good.
Furthermore, although the case where it applied to a passenger seat position was illustrated, it can also apply to other seats, such as a rear seat, for example.
The curved shape of the first support surface (upper surface of the rotation base 33 and the tilting convex portion 33a) or the second support surface (cam surface 88a) is the size of the door opening and the necessary tilting of the seat body 10. It can be set arbitrarily according to the angle and the like, and is not limited to the illustrated form.

It is a top view of the vehicle which mounts the vehicle seat which concerns on embodiment of this invention in a passenger seat. FIG. 2 is a side view of the vehicle seat as viewed from the direction of arrow (2) in FIG. 1. This figure shows a state in which the seat body is directed toward the door opening. Further, the seat body moved to the outside of the passenger compartment is indicated by a two-dot chain line. It is a top view of a sheet moving device, and is a top view of the 2nd slide mechanism. It is a top view of a sheet moving device, and is a top view of the 1st slide mechanism. FIG. 5 is a side view of the second slide mechanism taken along line (5)-(5) in FIG. 3. FIG. 6 is a side view of the first slide mechanism taken along line (6)-(6) in FIG. 4. FIG. 5 is a side view taken along line (7)-(7) in FIG. 4 and shows a movement of the slide frame. It is a side view which shows the movement of the guide roller with respect to a cam board.

Explanation of symbols

M ... Vehicle, K ... Door opening, F ... Vehicle floor 1 ... Vehicle seat 2 ...
DESCRIPTION OF SYMBOLS 10 ... Seat main body 11 ... Seat cushion 12 ... Seat back 13 ... Seat base 20 ... Front / rear slide mechanism 22 ... Guide rail 23 ... Front / rear slide base 24 ... Front / rear drive device 24a ... Drive motor, 24b ... Screw shaft, 24c ... Nut 30 ... Rotation mechanism 31 ... outer ring 32 ... inner ring 33 ... rotation base (first support surface), 33a ... tilting convex part (first support surface)
34. Receiving roller (guide section)
35 ... Bracket 50 ... First slide mechanism 51 ... Slide plate 53 ... Drive motor 54 ... Screw shaft 55 ... Nut, 55a ... Support shaft 56 ... Guide roller 57 ... Sheet holder 80 ... Second slide mechanism 81 ... Slide frame 82 ... Drive motor 83 ... Screw shaft 84 ... Nut 85 ... Bearing 86 ... Tilt bracket 87 ... Support shaft 88 ... Cam plate 88a ... Cam surface (second support surface)
100: sheet moving mechanism

Claims (4)

It is possible to move between the vehicle interior position and the vehicle exterior position on the vehicle floor via the vehicle door opening, and when moving to the vehicle exterior position, the vehicle interior outer edge descends and tilts accordingly. A slide frame that is supported so that the outer end of the passenger compartment rises as it moves to the position and becomes substantially horizontal, and a seat that is supported by the slide frame so as to be movable outward in the passenger compartment along the slide frame. A vehicle seat comprising a main body. The slide frame is supported by a tilting shaft provided on the vehicle floor so as to be movable in the vehicle interior and exterior direction so that the outer end of the vehicle interior can be moved up and down. The vehicle seat according to claim 1, wherein the vehicle seat is supported by a guide portion provided so as not to move to a vehicle floor at a position outside the outdoor shaft and lower than the tilting shaft. The seat body is rotatably supported so that the outdoor end thereof moves up and down with respect to the slide frame, and the seat body is mounted on the vehicle floor while the slide frame is moving. A first support surface that supports the seat main body is provided so as to be in a predetermined posture, and the slide frame is continuous with the first support surface, and the seat is in a state in which the slide frame is at a position outside the passenger compartment. 3. The vehicle seat according to claim 1, wherein a second support surface that supports the seat body is provided so that the seat body is in a predetermined posture while the body moves relative to the slide frame. . The vehicle floor is provided with a rotation base that is rotatable in the horizontal direction, the tilting shaft and the guide portion are provided on the rotation base, and the seat body is integrated with the slide frame by the rotation of the rotation base. The vehicle seat according to claim 3, wherein the vehicle seat can be rotated between a position facing the front of the vehicle and a position facing the door opening.

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