JP3259675B2 - Seat slide device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotating seat for a vehicle on which an occupant such as an elderly person or a physically handicapped person sits, and more particularly to a seat slide device thereof.

[0002]

2. Description of the Related Art Conventionally, as a seat slide device 91 of this kind of a rotating seat 90 for a vehicle, there is a structure shown in FIGS. The vehicle-like rotating seat 90 is provided in a passenger seat adjacent to the driver's seat, and a seat pedestal 93 is provided at a predetermined position on the floor 92. A rotating disk 94 is mounted on the seat pedestal 93. Have been. A seat slide rail 95 having a pair of left and right slide grooves 96 having a predetermined length is mounted in parallel on the turntable 94 at a predetermined interval. A base 97 is attached via a member so as to be movable back and forth along the seat slide rail 95.

A lower end of a pair of four-joint link arms 98 and 99 is pivotally attached to the rear side of the left and right edges of the base 97. A V-shaped swing arm 100 is pivotally mounted, and a reinforcing frame is mounted between horizontal portions 101 of the left and right swing arms 100, and a seat body 102 is mounted on the horizontal portion 101. A swing lock mechanism 103 and a stopper mechanism 104 are interposed between the base 97 and the lower surface of the horizontal portion 101 so as to be detachable.

The seat body 102 is directed to the front side in the state shown in FIG.
In this state, as shown in FIG. 15, a cross section substantially at a predetermined position on the floor 92 below the left and right seat slide rails 95 and outside the seat receiving table 93 as shown in FIG. 4 shaped hook brackets 105
The upper bracket 105a of the hook bracket 105 is provided with a cushion member 106 as shown in FIG. A pair of left and right seat slide rails 95 are provided with a front hook 107 and a rear hook 108 which engage with and disengage from the hook bracket 105. Further, for example, the seat belt 10 is provided on the seat body 102 or the swing arm 100 side.
Nine seat belt anchors 110 are installed.

[0005] The vehicle-like rotating seat 90 thus provided is provided.
By rotating the seat slide rail 95 toward the door opening via the turntable 94, the seat body 102 is oriented toward the door opening, and at the same time, the hooks 107 and 108 are disengaged from the hook bracket 105. When the base 97 is slid forward of the seat, the swing lock mechanism 103 is disengaged from the stopper mechanism 104, and the claw provided on the lower surface of the horizontal portion 101 is released. , 99, the seat body 102 is lowered out of the room via the swing arm 100, the seat body 102 is swung down to a predetermined height from the road surface, and the occupant can change to a wheelchair, for example. it can. In order to position the seat body 102 indoors, the seat body 102 is returned to the original position by performing the opposite operation.

[0006]

However, a seat slide rail 95 constituting the seat slide device 91 of the vehicle-like rotary seat 90 is mounted on an upper portion of the turntable 94, and the seat slide rail 95 has a seat body. The front and rear hooks 107,
108 engages with a hook bracket 105 provided on the floor 92 to apply an impact load from the seat belt 109 to the floor 92.
When the seat body 102 is rotated, the horizontal rotation of the seat body 102 causes the hooks 10 at the front and rear portions to rotate.
7, 108 and the cushion member 106 provided on the hook bracket 105 interfere with each other, causing the rotation member to deteriorate due to the detachment of the cushion member 106, and increasing the cost of components for preventing impact load by the seat belt. There was a problem.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems. A seat having a simple structure can stably slide the seat body in the front-rear direction and can take measures against belt load. It is an object to provide a slide device.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned technical problem, the present invention is directed to an outer rail which is arranged side by side at predetermined intervals in the front-rear direction of a vehicle, and is provided between the outer rails. Guide recesses are formed on the opposing surfaces, and an inner rail is provided between the guide recesses with a rolling element interposed between the guide recesses to slidably support the seat, and the inner rail slides on the inner rail side. and it has a configuration to dispose a guard rail for guiding, also on the movement path of the rear end portion of the inner rail, and configured to arrange a hook member for inserting the rear end portion removably sheet It is a slide device.

[0009]

According to the first aspect of the present invention, since the guard rail is provided inside the inner rail in parallel with the outer rail so that the inner rail is slidable, the deformation of the inner rail is suppressed to prevent the rolling element. , And the movement in the front-rear direction as the linear guide mechanism can be stably maintained. Also , while the vehicle is running, sudden braking,
The lifting of the inner rail due to the belt load acting on the seat belt due to a collision or the like can be prevented, and the belt load can be released to the floor via the hook member, so that the linear guide mechanism can be prevented from being damaged.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of the present invention will be described with reference to FIGS.
This will be described with reference to FIG. The rotating seat 1 for a vehicle (hereinafter, also simply referred to as a rotating seat) 1 according to the present embodiment exemplifies a case where it is set to a passenger seat on the left side of a driver's seat as shown in FIG. Therefore, the door opening D is provided on the left side of the rotating seat 1, and the rotating seat 1 can be moved to the outside by rotating the rotating seat 1 approximately 90 ° to the left (counterclockwise as viewed in plan).

Now, the vehicle rotating seat 1 according to the present embodiment.
A lifting device 50 for moving the seat body 2 in the width direction of the vehicle (between the room and the outside), and a rotating support 10 for rotating and supporting the seat body 2 and the lifting device 50. And a front-back support 30 for moving the seat body 2, the lifting / lowering device 50, and the rotary support 10 in the vehicle front-rear direction. The details of the seat body 2 and the elevating device 50 are shown in FIGS. 2 and 3, and the details of the rotary support 10 and the front-back support 30 are shown in FIG. 4. In addition,
In each of the drawings, the front of the vehicle is indicated by an arrow “front”, and the door opening side is indicated by an arrow “outside”.

First, as shown in FIG. 2, the seat body 2 has a seat cushion 2a and a seat back 2b, and a footrest 2c for mounting a foot on a seated person is attached to a front portion of the seat cushion 2a. I have. This seat body 2
No particular change is required for implementing the present invention.

The seat body 2 is mounted on a lifting device 50. The lifting device 50 has a function of moving the seat body 2 from indoor to outdoor or vice versa by expanding and contracting the four-bar link mechanism as shown in FIG. Have. In the drawing, reference numeral 53 denotes a base of the lifting / lowering device 50. The base 53 has a bottom edge 53b and side edges 5 rising parallel to each other on both sides thereof.
3a, 53a.
First and second link arms 51, 52 constituting a four-bar link mechanism are attached to the 53a via fulcrums 51a, 52a so as to be rotatable in the vehicle longitudinal direction. A connecting bar 54 is provided between the second link arms 52 on the rear side.
55, the two second link arms 5
2, 52 rotate integrally. Both ends of the lower connecting bar 54 are rotatably supported on both side edges 53 a of the base 53, so that the axis of the connecting bar 54 serves as a rotation fulcrum 52 a of the second link arm 52. ing.

The distal ends of the first link arm 51 and the second link arm 52 are connected to each other via a connecting arm 56 and a swing arm 57 on the left and right sides. Connecting arm 56
And the link arm 51, 5 with respect to the swing arm 57.
2 is rotatably connected via supporting points 51b and 52b, respectively. The side edge 53a of the base 53, the first and second link arms 51 and 52, and the swing arm 57 constitute a set of four-bar linkages.

The swing arm 57 is formed in a substantially rectangular shape and extends forward. As shown in the figure, a flange portion 57a is formed at the front end portion so as to project inward from each other, and between the front end portions. Is reinforced with a reinforcing bar 58. The seat body 2 is placed between the flange portions 57a, 57a and on the reinforcing bar 58, and is fixed by bolts (not shown).

Next, two L-shaped support arms 59, 59 are fixed substantially at the center of the lower connection bar 54, and a four-bar linkage is provided via both support arms 59, 59. An actuator 60 as a drive source of the elevating device 50 is mounted between the vehicle and the vehicle floor side.
As shown in FIG. 5, the actuator 60 mainly includes an electric motor 61, a gear box 62, and a ball screw 63. When the electric motor 61 starts, the screw shaft 63a is amplified by the torque amplified by the gear box 62. By rotating, the nut 63b in the form of a block that is screw-fitted to the screw shaft 63a moves in the axial direction of the screw shaft 63a.

The screw shaft 63a is rotatably supported by a cylindrical screw shaft case 63c attached to the output shaft side of the gear box 62.
The rotation support points 59a, 59 are provided by the book support arms 59, 59.
It is supported rotatably up and down through a. On the other hand, plate-like brackets 63d and 63 are provided on both sides of the nut 63b.
d is attached, and the front ends of both brackets 63d, 63d are connected via a support shaft 64 to the vicinity of the front end of the upper surface of the bottom edge 53b of the base 53 so as to be rotatable up and down. As described above, in the present embodiment, the actuator 60 is assembled in such a manner that the screw shaft 63a is located on the front side of the seat body 2 and the gear box 62 is located on the rear side of the seat body 2.

The actuator 6 thus assembled
According to FIG. 0, when the electric motor 61 is started in the normal rotation direction with the seat body 2 facing the door opening side as described later, the screw shaft 63a rotates and the nut 63b relatively moves the screw shaft 63a. Move to the tip side of. However, since the nut 63b rotates in the vertical direction but cannot move in the front-rear direction (the vehicle width direction at this stage), the screw shaft 63a and thus the actuator 60 itself move to the rear side of the seat body 2. This state is shown in FIG. As shown in the figure, the actuator 60 (a part excluding the nut 63b)
Move backward, the support arms 59, 5 in FIG.
9 and the connecting bar 54 rotate in the counterclockwise direction, whereby the second link arm 52 pivots around the fulcrum 52a to the outside of the room (to the left in the drawing).

When the second link arm 52 pivots to the outside of the room, the first link arm 51 pivots forward through the connecting arm 56, and the swing arm 57 moves to a predetermined position by the operation of the four-bar linkage. Swung out along the trajectory. When the swing arm 57 is swung out in this manner, the seat body 2 is positioned at a low position outside the room from the seating height in the room (the position indicated by the two-dot chain line from the position indicated by the solid line in FIG. 13).
Go to When the electric motor 61 is rotated in the reverse direction, the swing arm 57 moves in the above-described predetermined trajectory in the reverse direction, and the seat body 2 is returned from a low outdoor position to the indoor sitting height.

Next, on the bottom edge 53b of the base 53 of the elevating device 50, a rotation lock mechanism 70 for locking the operation of the rotation support table 10 described below is provided.
The rotation lock mechanism 70 will be described later. An arc-shaped pinion gear 6 is also provided on the lower surface of the bottom edge 53b.
And a slide lock automatic release plate 7 are attached. The pinion gear 6 meshes with a rack 38 via an intermediate gear 36 described later, and has a function of interlocking the rotation operation of the seat body 2 with the front-back movement operation. The slide lock automatic release plate 7 has a function of automatically releasing a slide lock mechanism 80 described later. These will also be described later.

Next, the rotation support base 10 will be described.
As shown in FIG. 4, the rotation support base 10 includes a base 12,
12, two inner rails 11, 11 are attached in parallel to each other at a fixed interval from each other. The inner rails 11, 11 are moved forward and backward along outer rails 32, 32 of a longitudinal support 30 to be described later. The rotation ring 13 is provided on the upper surfaces of the bases 12 and 12.
Is installed. Although not shown, the rotating ring 13 has a configuration in which a number of steel balls are sandwiched between an outer ring 13a and an inner ring 13b, and one of the rotating rings smoothly rotates without rattling with respect to the other. Base 1
2 and 12 and the inner race 13b is
Is fixed to the lower surface of the bottom edge 53b, whereby the lifting device 50 and thus the seat body 2 are rotatably supported on the upper surface side of the rotary support base 10. As is clear from FIG. 6, the rotating ring 13 is attached to the outdoor end of the seat surface (seat cushion 2a) of the seat body 2. Thus, when the seat body 2 is rotated about 90 ° to the outside of the room,
The hip point HP of the seat is the center of rotation (rotating ring 1
Move to the front side of 3).

As shown in FIG. 4, a lock pin 74c of a rotation lock member 74 provided on the lifting / lowering device 50 side is engaged and disengaged at two positions, that is, a rear portion and a right side portion (side portion on the indoor side) of the rotation support base 10. Lock plates 71 and 72 are attached. The lock pins 74c are attached to both lock plates 71 and 72.
Lock recesses 71a, 72a in which the lock recesses 71a
Are formed. As shown in FIG. 7, the rotation lock mechanism 70 provided in the lifting device 50
And a rotation lock member 74. The rotation lock release lever 73 is provided on the lower surface of the distal end portion of the left swing arm 57 so as to be vertically rotatable via a bracket 73b. Although not shown, the rotation lock release lever 73 is urged by a tension spring (or a torsion spring) in a direction in which the distal end moves upward.

The rear end 73 of the rotation lock release lever 73
a (lower end) is in contact with one end of an intermediate member 75 attached near the front left corner of the base 53 of the elevating device 50 via a bracket 76. This intermediate member 75 has a fulcrum 75
and is supported rotatably in the horizontal direction via a. Therefore, when the rotation lock release lever 73 is pressed down against the urging force, the rear end 73a is displaced rearward, whereby one end of the intermediate member 75 is pushed and rotates in the counterclockwise direction.

One end of an operation wire 77 is connected to the other end of the intermediate member 75, and the operation wire 77 reaches the vicinity of the rear left corner of the base 53 via the inner peripheral side of the protective tube 78. At the rear left corner of the base 53, a rotation lock member 74 is mounted via a bracket 79 so as to be rotatable in the horizontal direction via a support shaft 74a. A lock pin 74c is attached to the support shaft 74a on the indoor side, and a hook 74d is provided on an end on the outdoor side. Rotation lock member 7
Since a tension spring 74b is attached between the indoor side end of the fourth bracket 4 and the bracket 79, the rotation lock member 74 is moved in the direction of pulling the lock pin 74c, that is, in the lock recesses 71a, 72a of the lock plates 71, 72. It is urged in the fitting direction (lock direction).

On the other hand, the other end of the operation wire 77 is hooked on the hook 74d. Therefore, as described above, the intermediate member 75 is connected to the rear end 7 of the rotation lock release lever 73.
When pressed and rotated by 3a, the operation wire 77 is pulled forward, whereby the rotation lock member 74 rotates in the unlocking direction (clockwise) against the tension spring 74b, thereby locking the lock pin 74c. The rotation lock is released from the lock concave portions 71a, 72a of the plates 71, 72. When the rotation lock is released, the seat device 2 can be rotated by the lifting device 50.

When the rotation operation of the rotation lock release lever 73 is released, the rotation lock member 74 is returned in the locking direction by the tension spring 74b, whereby the lock pin 74c is returned to a position where it can be engaged with the lock plates 71, 72. It is. In this state, when the seat body 2 is rotated to the seating position or the sideways position facing the door opening, the lock pin 74c fits into the lock recess 71a (72a) of one of the rotation lock plates 71 (72). Thus, the seat body 2 is locked at that position so as not to rotate. When the seat body 2 is positioned at the seating position facing the front of the vehicle, the lock member 7 is attached to the rotation lock plate 71 on the rear side.
When the seat body 2 is locked and the seat body 2 is positioned at the sideways position facing the door opening, the lock plate 72 on the indoor side is opened.
The locking member 74 is locked.

Next, as shown in FIG. 4, an auxiliary piece 81 is attached to the base 12 on the front side of the rotary support base 10 so as to project forward, and a slide lock mechanism 80 is mounted on the upper surface of the auxiliary piece 81. Installed. Details of the slide lock mechanism 80 are shown in FIG. An insertion hole 81a is formed in the auxiliary piece 81, and a sleeve 82 is fitted into the insertion hole 81a. The cylindrical portion 83a of the holder 83 is inserted through the inner peripheral side of the sleeve 82 so as to be movable in the axial direction. Since a compression spring 84 is interposed between the flange 83b of the holder 83 and the auxiliary piece 81, the holder 83 moves upward in the drawing, that is, the column 83a is pulled out from the lock hole 31a. Has been energized.

A steel ball 85 is held at the upper end of the holder 83 so as to be rotatable and not fall off. The steel ball 85 is pressed against the slide lock automatic release plate 7 (FIG. 8) or the lower surface of the pinion gear 6 by the urging force of the compression spring 84. The slide lock automatic release plate 7 is attached to the lower surface of the pinion gear 6. Therefore, as shown by the relative position in FIG. 9A, the steel ball 85 is pressed against the slide lock automatic release plate 7, that is, the seat body 2 is turned to the front without being rotated. Then, the holding body 83 is pushed down by the thickness of the slide lock automatic release plate 7 against the compression spring 84, and the lower end thereof is formed on the base 31 of the front-rear direction support base 30 (FIG. 4). It is inserted into the hole 31a. When the cylindrical body portion 83a of the holding body 83 is inserted into the lock hole 31a, the rotary support 10 and, consequently, the seat body 2 are locked immovably in the front-rear direction with respect to the front-rear support 30.

On the other hand, in the process of rotating the seat body 2 to the door opening side to move the pinion gear 6 and the slide lock automatic release plate 7 in an arc in the counterclockwise direction around the rotating ring 13 (see FIG. (B) When the steel ball 85 comes off the slide lock automatic release plate 7 as shown in the relative position of (c), the holding member 83 is compressed by the compression spring 84.
Moves upward by the thickness of the same plate 7,
The lower end portion is pulled out from the lock hole 31a, whereby the seat body 2 is automatically unlocked in the front-rear direction. Although FIG. 9 shows a state in which the slide lock mechanism 80 is arranged at a plurality of positions with respect to the pinion gear 6 and the slide lock automatic release plate 7, the slide lock mechanism 80 is on the fixed side with respect to the rotation operation of the seat body 2. Since the pinion gear 6 and the slide lock automatic release plate 7 are on the rotating side, the pinion gear 6 and the slide lock automatic release plate 7 actually move with respect to the slide lock mechanism 80.

Next, V-shaped grooves 11a are formed on the outer side surfaces of the two inner rails 11, 11 of the rotary support base 10, as shown in FIG. On the other hand, outer rails 32, 3 are provided on both sides of the base 31 of the front-rear support 30.
2 are arranged in parallel at a certain interval from each other. Both outer rails 32, 32 are connected to the inner rails 11, 1
1 are arranged along the outside of the inner rail 1
The groove 32 similar to the groove 11a is also formed on the side surface facing the groove 1.
a are formed facing each other. A groove 11 is provided between the inner rail 11 and the outer rail 32 arranged as described above.
a, 32a, a large number of steel balls (also referred to as rolling elements) 33 to 33 are sandwiched therebetween, whereby a pair of right and left linear guide mechanisms 34, 34 are formed. A guard rail 37 having a substantially L-shaped cross section is laid in a predetermined range on the base 31 inside the inner rail 11 so as to be able to slide the inner rails 11 and 11 and prevent the inner rails 11 from coming off the outer rail 32.
In addition to the two linear guide mechanisms 34, 34, the guardrail 3
The provision of the support 7 enables the rotation support base 10 and thus the lifting / lowering device 50 and the seat body 2 to move smoothly in the front-rear direction of the vehicle without play. Although not shown, the base 31 of the front-rear support 30 is fixed to the vehicle floor with bolts, whereby the rotary seat 1 is installed at a predetermined position (passenger seat position) in the vehicle cabin. In addition, although the said rolling element was illustrated with the steel ball 33, it is not limited to this, For example, the roller which forms a cylindrical body may be sufficient.

11 (a) and 11 (b) in a state where the rotating seat 1 is fixed at a predetermined position in the vehicle cabin (in a state where the cylindrical portion 83a is inserted into the lock hole 31a). The rear ends of the inner rails 11, 11 are formed with extending portions 11b, 11b extending rearward by a predetermined length.
On the vehicle floor side of the movement route of the extending portions 11b, 11b, a substantially inverted U is provided in which the extending portions 11b, 11b are removably inserted.
A hook member 39 having a shape is provided.

Next, means for linking the rotation operation of the seat body 2 with the movement operation in the front-rear direction will be described. As shown in FIGS. 4 and 8, a rack 38 is attached to the side surface of the outer rail 32 on the indoor side. On the other hand, an intermediate gear 36 is rotatably mounted on the upper surface of the inner rail 11 on the indoor side via a support plate 35. The intermediate gear 36 is meshed with the rack 38, and the position and length of the rack 38 are set so that this meshed state is maintained in the entire range of movement of the seat body 2 in the front-rear direction.

On the other hand, the above-described pinion gear 6 has an arc shape in a range of substantially 90 ° as shown in FIGS. 6 and 8, and its initial meshing side (the end side in the counterclockwise direction; The same angle range (about 26 in the present embodiment).
°) has no meshing teeth. For this reason, the seat body 2 is moved from its seating position (the position facing the front of the vehicle, the position indicated by the solid line in FIG. 6) to the door opening side (counterclockwise direction).
The range of about 26 ° at the beginning of rotation is the pinion gear 6
And the intermediate gear 36 do not mesh with each other, so that the seat body 2 only rotates and does not move forward of the vehicle (non-interlocking range).

When the seat body 2 is further rotated toward the door opening, the pinion gear 6 meshes with the intermediate gear 36.
The intermediate gear 36 rotates in conjunction with the rotation operation of the seat body 2. Since the intermediate gear 36 is engaged with the rack 38,
As it rotates, it moves forward of the vehicle, whereby the rotation support base 10 moves forward of the vehicle, and consequently the seat body 2 moves forward of the vehicle while rotating toward the door opening (interlocking range).

Here, the aforementioned slide lock mechanism 80
9, the timing at which the steel ball 85 is disengaged from the slide lock release plate 7 and the slide lock is released (FIG. 9)
Medium, relative position (b) timing)
Is set just before the teeth of the pinion gear 6 are engaged with the intermediate gear 36 by the rotation operation. That is, the seat body 2
Initially started to rotate the seat from the seating position to the door opening side.
In the range of 6 °, the steel ball 85 is in contact with the slide lock automatic release plate 7 and the cylindrical portion 83a of the holder 83 is inserted into the lock hole 31a (the state of the relative position (a) in FIG. 9). , Whereby the seat body 2 is maintained in a locked state so as not to move in the front-rear direction.

When the seat body 2 is rotated about 26 °, the steel ball 85 comes off the slide lock automatic release plate 7 (the relative position (b) in FIG. 9). Then, the holding body 83 is displaced upward by the compression spring 84, and the cylindrical body portion 83a is pulled out from the lock hole 31a (FIG. 9).
(Medium, relative position (c)), whereby the seat body 2 is movable in the front-rear direction (automatic release of the slide lock). Thereafter, until the seat body 2 reaches the sideways position facing the door opening side, the steel ball 85 is kept pressed against the lower surface of the pinion gear 6, and the unlocked state of the slide lock is maintained.

Conversely, while the seat body 2 is rotated about 64 ° from the sideways position facing the door opening to the seating position, the holding member 83 of the slide lock mechanism 80 is maintained in a state of being displaced upward. Then, since the slide lock is released and held, the seat body 2 moves rearward while rotating (clockwise) toward the seating position. When the seat body 2 is rotated about 64 ° from the lateral position, the seat body 2 is returned to the rear position in the vehicle front-rear direction, and the steel balls 8 are moved.
5 rides on the slide lock automatic release plate 7 and the holding body 83 is pushed down against the compression spring 84, whereby the cylindrical body portion 83a is inserted again into the lock hole 31a, so that the seat body 2 is in the rear position. It is locked so that it cannot move in the front-rear direction (the state of the relative position (b) in FIG. 9). Thereafter, the seat body 2 is returned to the seating position facing the front of the vehicle by performing only the rotation operation of about 26 °.

As described above, the slide lock mechanism 80 is automatically locked / unlocked in synchronization with the timing at which the rotation operation of the seat body 2 and the movement operation in the front-rear direction are linked. The slide lock automatic release plate 7 is set to a size and a shape capable of realizing this, and its mounting position is set.

The left and right sides and the rear part of the front-rear direction support base 30 are covered with covers 41, 42, and 43, thereby preventing malfunction due to foreign matter being caught and improving the appearance.

Next, an operation procedure of the rotating seat 1 configured as described above will be described with reference to FIG. In the figure, the rear position of the vehicle front-back direction movement range is indicated by reference symbol L0, the front position is indicated by reference symbol L1, and the vehicle width direction movement is based on the rotation center of the seat body 2 (the rotation center of the rotation ring 13). The indoor side position of the range is indicated by reference numeral W0, and the outdoor side position is indicated by reference numeral W1.

FIG. 12A shows a state in which the seat body 2 is located at the seating position. In this position, the extension portions 11b and 11b of the inner rails 11 and 11 are attached to the hook members 39 provided on the floor. It has been inserted. In this seated position, the operator pushes down the rotation lock release lever 73 to release the rotation lock mechanism 70, and then rotates the seat body 2 toward the door opening D (counterclockwise in the drawing). FIG. 12 (B) shows a state where it is rotated about 26 ° in the same direction. During this time, since the pinion gear 6 and the intermediate gear 36 do not mesh with each other, the seat body 2 performs only a rotating operation. At this stage, the seat body 2 has reached the rear portion of the door opening D, that is, the position just before the rear pillar P interferes with the seat cushion 2a. 2 cannot be rotated to the sideways position toward the door opening D.

However, when the slide lock release plate 7 is displaced from the steel ball 85 of the slide lock mechanism 80 at the time when it is rotated by about 26 °, the holding body 83 moves upward, whereby the cylindrical body 83a is moved from the lock hole 31a. The pinion gear 6 is pulled out and can be moved forward (the slide lock is automatically released), and the pinion gear 6 starts to mesh with the intermediate gear 36.

Therefore, when the seat body 2 is further rotated, the seat body 2 engages with the pinion gear 6 and the intermediate gear 36 and engages with the intermediate gear 36 and the rack 38 in conjunction with this rotation operation. To move forward, and to extend the inner rails 11, 11.
b is detached from the hook member 39. Thus, the seat body 2
Moves forward while rotating the remaining about 64 °, thereby reaching a lateral position facing the door opening D side as shown in FIG. 12C and reaching the front position L1. In this way, by moving the seat body 2 forward while rotating, it is possible to prevent the foot or the footrest of the occupant from interfering with the front end of the door opening D during the rotation. In this regard, conventionally, when the seat body is once moved to the front position and then rotated, there has been a problem that a foot or the like of the occupant interferes with the front end of the door opening (body), as in the present embodiment. Such a problem can be avoided by moving forward while rotating.

In this manner, when the seat body 2 is in the horizontal position, the lock pin 74c is locked by the rotation lock plate 72 on the indoor side of the rotary support base 10, whereby the seat body 2 cannot be rotated in the horizontal position. Locked.
Since the seat body 2 is locked so as not to rotate, the movement operation in the vehicle front-rear direction is also locked. This is because since the pinion gear 6 and the intermediate gear 36 and the intermediate gear 36 and the rack 38 are in mesh with each other, the rotation operation of the seat body 2 and the movement in the front-rear direction are linked.

Next, the electric motor 61 of the elevating device 50 is rotated forward to swing the swinging arms 57, 57 out of the room, whereby the seat body 2 is moved from the indoor position W0 in FIG. D) is lowered to a predetermined height while moving to the outdoor position W1. After the seat body 2 descends to a predetermined outdoor height, the electric motor 61 stops and the elevating device 50 stops, and the occupant can leave the seat in this state. As described above, the seat body 2 is gradually displaced to a lower position (for example, the same height as a wheelchair) while moving out of the vehicle through the door opening D. Even in the case of transfer, it is possible to easily move between the seat body 2 and the vehicle. Moreover, in the present embodiment, since the seat body 2 is moved in the vehicle width direction by the action of the four-bar linkage, the seat body 2 is moved up and down more in a small space in the width direction than, for example, the structure moved by the slide mechanism. Can be moved. For this reason, even if it is a one-box car having a relatively high indoor floor, the seat body 2 can be lowered to a sufficiently low height.
Can be moved.

Further, as shown in FIG. 12D, in the process of moving the seat body 2 out of the vehicle by the operation of the lifting / lowering device 50, even if the opened door Dr receives a force in the closing direction due to, for example, wind, the seat can be seated. The door is held in the opening direction by the seat cushion 2a of the main body 2, so that the door does not interfere during the getting on / off operation.

As described above, in order to return the seat body 2 moved to the outdoor position W1 to the original sitting position, the electric motor 61 is rotated in reverse to operate the lifting device 50 in the reverse direction. FIG. 12 (C) while raising the main body 2
To the indoor side position W0 shown in FIG. At this point, the electric motor 61 stops, and the lifting device 50 stops. After that,
Release the rotation lock mechanism 70 and manually operate the seat body 2
Is rotated toward the indoor side. Also at this stage, since the pinion gear 6 and the intermediate gear 36 and the intermediate gear 36 and the rack 38 are held in mesh with each other, the seat body 2 rotates from the front position L1 to the rear position L0 while rotating in the cabin opposite to the above. Move towards.

At the stage when the seat body 2 is rotated about 64 ° from the sideways posture toward the indoor side, the seat body 2 is returned to the rear position L0 and
The position shown in FIG. Thereafter, by rotating the seat body 2 further by about 26 °, the seat body 2 can be returned to the seating position shown in FIG. In this rotation range of 26 °, the pinion gear 6 and the intermediate gear 36 are disengaged from each other, and the slide lock release plate 7 is returned to above the steel balls 85 of the slide lock mechanism 80 as described above. Since the lock 80 returns to the locked state, the seat body 2 performs only the rotation operation and does not move in the front-rear direction. When the seat body 2 is located at the indoor position W0, the rear extension portions 11b, 11b,
11b is inserted through a hook member 49 attached to the floor.

According to the vehicular rotary seat 1 of the present embodiment configured as described above, the seat body 2 is supported by the elevating device 50, the rotary support 10 and the front-back support 30, and Between the support 30 and the intermediate gear 3
The pinion gear 6 and the rack 38 meshing with each other via the
, The rotation operation of the seat body 2 and the movement operation in the front-rear direction are linked. In particular,
The inner rails 11, 11 on which the rotating ring 13 of the rotating abutment 10 is attached, can be moved in the front-rear direction by interposing a plurality of steel balls 33 inside the outer rail 32 arranged side by side on the base 31 of the front-rear support 30. At the rear of the inner rails 11, 11, extending portions 11 b,
11b, the extension portions 11b, 11b are configured to be removably inserted into hook members 39 arranged on the floor side. Therefore, the extension portions 11b, 11b of the inner rails 11, 11 are inserted into the hook members 39 in a state where the seat body 2 is located at the vehicle inner position W0. In this way, the lifting of the inner rails 11, 11 due to the belt load acting on the seat belt can be prevented, and the load can be released to the floor via the hook member 39, thereby preventing the linear guide mechanism 34 from being damaged. . Inside the inner rails 11, 11, the inner rails 1 are provided side by side with the outer rails 32 on the base 31.
Since the guard rails 37 are provided so that the inner rails 11 and 11 are slidable, the deformation of the inner rails 11 and 11 is suppressed, the steel balls 33 are prevented from coming off, and the linear guide mechanism 34 is stably moved in the front-rear direction. Can be.

[Brief description of the drawings]

FIG. 1 is a plan view of a vehicle showing an arrangement of a rotating seat in a room.

FIG. 2 is a perspective view of a seat body.

FIG. 3 is a perspective view of a lifting device.

FIG. 4 is a perspective view of a rotary support and a front-rear support.

FIG. 5 is a perspective view of an actuator.

FIG. 6 is a plan view showing a mechanism for interlocking a rotating operation of the seat body and a moving operation in the front-rear direction.

FIG. 7 is a perspective view of a rotation lock mechanism.

FIG. 8 is a perspective view showing a mechanism for interlocking a rotation operation of the seat body and a movement operation in the front-rear direction and a slide lock mechanism.

FIG. 9 is a cross-sectional view of the slide lock mechanism;
Indicates a slide lock state, (b) indicates a state in which the holder moves, and (c) indicates a slide lock release state.

FIG. 10 is a cross-sectional view of a linear guide mechanism between a front-back direction support base and a rotary support base.

FIG. 11A is a perspective view of a rear side of a front-rear direction support base and a rotary support base. (b) It is a figure which shows the relationship between an inner rail and a hook member.

12A and 12B are plan views showing the operation of the vehicular revolving seat of the present embodiment, wherein FIG. 12A is a seat body in a seated position, FIG. 12B is a seat body rotated about 26 ° to the door opening side, C) shows the seat body in the lateral position, and (D) shows the seat body swinging out of the room.

FIG. 13 is a side view showing an operation state of the lifting device. This figure shows a case where the actuator is arranged with the gear box located on the rear side.

FIG. 14 is a side view of a conventional rotating seat for a vehicle.

FIG. 15 is a plan view around a sheet receiving table.

FIG. 16 is an explanatory diagram of engagement between a seat slide rail and a hook bracket.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Rotation support base 11 Inner rail 11b Extension part 30 Front-back direction support base 32 Outer rail 33 Steel ball (rolling element) 34 Linear guide mechanism 37 Guard rail 39 Hook member

Continuation of the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B60N 2/24 A61G 3/00 B60N 2/12 B60N 2/14

Claims (1)

(57) [Claims] 1. A vehicle which is provided at predetermined intervals in a longitudinal direction of a vehicle.
Between the outer rail and the outer rail
Guide recesses are formed on opposite surfaces of each other, and between the guide recesses.
The seat that supports the seat slidably with rolling elements interposed
The inner rail is provided, and the inner rail is
A guardrail that slides the rails is installed, and
On the movement path of the rear end of the inner rail,
Seat slide with a hook member to be inserted
Device.