JP2573829Y2 - Rotating seat for vehicles - 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.

[0002]

2. Description of the Related Art Japanese Patent Application Laid-Open Publication No. Sho 62-181931 discloses a type of rotating seat for a vehicle, which comprises a lower rail fixed to a vehicle body floor and an upper rail slidably mounted on the same rail so as to be slidable in the front-rear direction. A rotating seat having a rotating frame attached to both upper rails so as to be rotatable along a vehicle body floor and fixing a seat body to the rotating frame is disclosed.

According to such a configuration, the upper rail slides in the front-rear direction along the lower rail, so that the front-rear position of the seat body can be adjusted, and the rotating frame assembled to the upper rail rotates along the vehicle body floor. When the door is opened and getting on and off, the seat body can be turned from the front to the door opening side to facilitate getting on and off.

[0004]

Generally, a rocker panel constituting a side member of a vehicle body is disposed at a lower edge of a door opening of a vehicle. Since the rocker panel projects upward from the vehicle body floor, in the above-described conventional rotary seat, when the seat is rotated to the door opening side, a predetermined height is set so that the seat cushion does not hit the rocker panel. Must be set to

However, if the height is set so that the seat cushion does not hit the rocker panel, the position of the buttocks at the time of sitting is too high, or the roof of the vehicle body is located very close to the head. The sitting comfort is impaired.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a vehicular revolving seat capable of rotating a seat and facilitating getting on / off operation without impairing sitting comfort.

[0007]

SUMMARY OF THE INVENTION A rotary seat for a vehicle according to the present invention comprises a pair of left and right seat tracks having a lower rail fixed to a vehicle body floor and an upper rail slidably mounted on the same rail in the front-rear direction. A base frame in which the front end and the rear end can be raised and lowered on both upper rails, a front vertical mechanism for raising and lowering the front end of the base frame, a rear vertical mechanism for raising and lowering the rear end of the base frame, and the base frame. A rotating frame that is rotatably assembled, a rotating frame driving mechanism that rotates the rotating frame, a seat cushion fixed to the rotating frame, a sensor that detects a rotation angle of the cushion,
A sensor for detecting a height of a front end of the seat cushion, a sensor for detecting a height of a rear end of the seat cushion, and the front vertical mechanism, the rear vertical mechanism, and the Control means for cooperatively controlling each operation of the rotating frame drive mechanism is provided, and the respective mechanisms are cooperatively controlled such that the seat cushion rotates while maintaining a predetermined height.

[0008]

According to the present invention, the front and rear ends of the base frame are mounted on the upper rail so as to be able to move up and down.
Since the rotating frame is assembled to the base frame and the seat cushion is fixed to the rotating frame, the height of the front and rear ends of the seat cushion can be adjusted, and the seat cushion can be rotated to the door opening side. In addition, since control means for linking and controlling the rotating frame drive mechanism, the front vertical mechanism and the rear vertical mechanism is provided, at the time of getting on and off, the seat cushion is held at a predetermined height so as not to hit the rocker panel and rotated, During traveling, the position of the seat cushion may be lower than during rotation. Therefore, the seat can be rotated to the door opening side at the time of getting on and off, so that getting on and off can be achieved without deteriorating the sitting comfort during traveling.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 shows a rotating seat for a vehicle according to a first embodiment of the present invention. The vehicle rotating seat includes a pair of left and right seat tracks 11 and 12, an electric seat track driving mechanism 3.
0, a base frame 13, an electric front vertical mechanism 40 for elevating and lowering the front end of the base frame 13, an electric rear vertical mechanism 50 for elevating and lowering the rear end of the base frame 13, and a rotation rotatably mounted on the base frame 13. A frame 14 and an electric rotary frame driving mechanism 60 for rotating the rotary frame 14 are provided.
The operations of 0, 50, and 60 are linked and controlled by a control means described later in accordance with a predetermined procedure.

The seat tracks 11, 12 are lower rails 11a, 12a fixed to the vehicle body floor and the same rails 11a, 12a.
Upper rails 11b and 12 slidably mounted on 12a
The frame 18A and the frame 18B are bridged between the upper rails 11b and 12b and both ends are welded, and the frame 18C is welded to the frame 18A. A frame 19 is bridged between the lower rails 11a and 12a and both ends are welded.

The front end of the base frame 13 is provided with links 45A, 45B, 4 constituting a front vertical mechanism 40.
5C, the upper rails 11b, 12b are assembled so as to be able to move up and down, and the rear ends of the upper rails 11 are formed by links 55A, 55B, 55C constituting a rear vertical mechanism 50.
b, 12b so as to be able to move up and down.

The rotating frame 14 is rotatably mounted on the base frame 13 by a ring plate 15 described later, a plate 16 welded to the base frame 13 and a plate 17 welded to the rotating frame 14. Also,
As shown in FIG. 2, the front end of the seat cushion SC is fixed to the front end of the rotating frame 14 with a bracket 23 and bolts 24A, and the rear end of the seat cushion SC is mounted with brackets 25, 26 and bolts 24B. The ends are fixed. The bracket 25 is provided with a well-known seat reclining mechanism 27. The seat back SB has a lower right end attached to a bracket 26 and a lower left end attached to an arm 27A of a seat reclining mechanism 27 with a bolt 24C.
By operating 7B, the reclining angle can be adjusted by rotating in the front-rear direction.

The electric seat track driving mechanism 30 is rotatably mounted on a frame 18C fixed to the upper rails 11b and 12b and a frame 18B via a bearing (not shown) and extends along the upper rails 11b and 12b.
Screw shafts 31, 32, lower rail 11
gear nuts 33, 3 fixed to frame 19 welded to a, 12a and screwed to screw shafts 31, 32
4. Motor 35 fixed to frame 18C, frame 1
Transmission mechanisms 36 and 37 fixed to 8C and connecting the output shaft of the motor 35 and the screw shafts 31 and 32 are provided.

The electric drive mechanism 30 is configured as described above. When the motor 35 is driven forward or backward, the screw shafts 31 and 32 rotate and the gear nuts 33 and 34 rotate.
Move forward and backward. Thus, the gear nuts 33 and 34 are integrally fixed to the lower rails 11a and 12a via the frame 19, and the screw shafts 31 and 32 are connected to the upper rails 11b and 12b via the frames 18A, 18B and 18C.
12b, the screw shaft 3
The upper and lower rails 11b and 12b move forward or backward along the lower rails 11a and 12a by the forward and backward movement of the first and second rails 32, respectively.

As shown in FIGS. 1, 3, 4, and 5, the front vertical mechanism 40 is rotatably mounted on the frame 18C via a bearing 41, and the upper rail 12
b, a nut shaft 4 that is screwed to the screw shaft 42 so as to be able to advance and retreat.
3. a stopper 44 fixed to the screw shaft 42 to limit the amount of advance and retreat of the nut bracket 43; a link 45A having a lower end pivotally connected to the nut bracket 43;
A front vertical rod 47, which is rotatably attached to both upper rails 11b by a bracket 46A, and has an upper end portion of a link 45A welded and fixed, and a left and right base portion welded and fixed to an end of the rod 47 A pair of links 45B, a link 45C rotatably connected to the distal end of each link 45B, a seat bracket 46B connected to each link 45C, and a front vertical motor 48 fixed to the frame 18A are provided. Is fixed with bolts 24D. The screw shaft 42 is drivingly connected to an output shaft of a front vertical motor 48 via a gear box 49.

The front vertical mechanism 40 is configured as described above. When power is supplied to the front vertical motor 48, the screw shaft 42 rotates, and the nut bracket 43 advances and retreats along the shaft 42. Accordingly, the link 45A rotates and the front vertical rod 47 rotates, so that the link 45B and the link 45C rotate in conjunction with the rotation. As a result, the seat bracket 4
6B moves up and down, and the height of the front end of the base frame 13 changes.

The rear vertical mechanism 50 is connected to the frame 18.
B, a screw shaft 52 that is rotatably mounted via a bearing 51 and extends along the upper rail 12b, a nut bracket 53 that is screwed to the screw shaft 52 so as to be able to advance and retreat, and an amount of advance and retreat of the nut bracket 53 that is fixed to the screw shaft 52. 54, a link 55A whose lower end is rotatably connected to the nut bracket 53, and a rear vertical rod which is rotatably mounted to both upper rails 11b by a bracket 56A and to which the upper end of the link 55A is welded. 57, a pair of left and right links 5 whose base ends are welded and fixed to the ends of the rod 57
5B, a link 55C rotatably connected to the distal end of each link 55B, a seat bracket 56B connected to each link 55C, and a rear vertical motor 58 fixed to the frame 18B. The rear end of the base frame 13 is attached to the seat bracket 56B. The part is fixed with a bolt 24E.
The screw shaft 52 is drivingly connected to an output shaft of a rear vertical motor 58 via a gear box 59.

The rear vertical mechanism 50 is configured as described above. When power is supplied to the rear vertical motor 58, the screw shaft 52 rotates, and the nut bracket 53 advances and retreats along the shaft 52. Along with this, link 5
Since the rear vertical rod 57 rotates by rotating 5A, the link 55B and the link 55C rotate in conjunction with this. As a result, the seat bracket 56B moves up and down, and the height of the rear end of the base frame 13 changes.

Plate 1 welded to base frame 13
6 is provided with a circular opening 16b surrounded by a flange 16a projecting upward, and a plate 17 welded to the rotating frame 14 is provided with a circular step 17a projecting downward. As shown in detail in FIG.
7 is fitted into the circular opening 16b of the plate 16, and the ring plate 15 is fixed to the circular step 17a with bolts 21A so as to sandwich the flange 16a. The rotating frame 17 is provided with these plates 1
It is rotatably assembled to the base frame 13 by the ring plates 15 and 6 and 17.

The electric rotary plate driving mechanism 60 is, as shown in FIG. 6 and FIG.
1, a lower arm 62, a pair of inner plates 63, and an upper arm 64. The base plate 61 is fixed to the lower arm 62 with bolts 65A, and the lower arm 62 is fastened to the back side of the plate 16 with bolts 65B.

The upper arm 64 is attached to the lower arm 62 by rivets 68. This rivet 68
Is a through hole 64a provided in the center of the upper arm 64.
Is set up on the lower arm 62 so as to be in sliding contact with the arc-shaped end surface 64b having the center of curvature as the center of curvature.
Rotates along the rivet 68 around the through hole 64a.

On the upper surface of the base plate 61, a shaft 69, a gear 70 rotating integrally therewith, a gear 71 meshing with the gear 70, and a shaft 72 rotating integrally therewith
Has been assembled. A motor 73 is mounted on the lower surface side, and the output shaft of the motor 73 and the shaft 72 are connected via a gear box (not shown).

The lower arm 62 and the upper arm 64 are provided with storage recesses 62a and 64c, respectively.
Gears 62b and 64d are formed on the inner peripheral walls of a and 64c. The shaft 69 penetrates through holes 62c and 64a provided at the centers of the bottoms of the arms 62 and 64, and is prevented from coming off by a leaf spring 74A, a washer 74B and a C ring 74C.

Storage recesses 62a, 6 of both arms 62, 64
4c stores both inner plates 63, and a sun gear 75 and three planetary gears 76 meshing with the sun gear 75 are attached to both plates 63. Sun gear 7
5 is fitted to the shaft 69 so as to rotate integrally therewith, and the planetary gear 76 meshes with gears 62 b and 64 d provided on the lower arm 62 and the upper arm 64.

With this configuration, when the motor 73 is energized, the gears 71 and 70 and the sun gear 75 rotate, and the planetary gear 76 rolls along the gear 62b of the lower arm 62 while rotating around the sun gear 75. As a result, the upper arm 64 rotates about the shaft 69. On the other hand, since the ring plate 15 is connected to the upper arm 64 so as to rotate integrally with the bracket 22, the bolt 21B, and the rivet 21C, when the upper arm 64 rotates, the ring plate 15 also rotates. Rotating frame 1 integrated with
4. The seat cushion SC attached to the frame 14 also rotates.

Next, the above-described seat track driving mechanism 3
FIG. 8 shows a functional configuration of control means for cooperatively controlling the operations of the front vertical mechanism 40, the rear vertical mechanism 50, and the rotary frame drive mechanism 60. The control means includes a get-off switch S1, a boarding switch S2, a position sensor PS1 for detecting the position of the seat cushion SC in the front-rear direction, a position sensor PS2 for detecting the height of the front end of the seat cushion SC, and a rear end of the seat cushion SC. Position sensor PS for detecting the amount of change in height
3. The position sensor PS4 for detecting the rotation angle of the seat cushion SC, the switches S1 and S2, and the position sensors PS1, PS2, PS3 and PS4 are connected via the input interface IF1 and the motor of the seat track drive mechanism 30. 35, a microcomputer CPU connected to the motor 48 of the front vertical mechanism 40, the motor 58 of the rear vertical mechanism 50, and the motor 73 of the rotary frame driving mechanism via the output interface IF2. Each of the position sensors PS1, PS2, PS3, and PS4 detects a change in magnetic flux density caused by a magnet attached to the output shaft of each of the motors 35, 48, 58, and 73 and a change in position of the magnet caused by rotation of the output shaft. A well-known position sensor including a Hall element to be detected and a circuit for converting an output signal of the Hall element into a pulse voltage is used.

Thus, each motor 35, 48, 58, 7
3 denotes switches S1 and S2 and position sensors PS1 to P
Based on the output signal of S4, the microcomputer CPU controls its operation in accordance with the flowchart shown in FIG. 9 when getting off and according to the flowchart shown in FIG. 10 when getting in.

That is, when the get-off switch S1 is operated in step 100 when getting off the vehicle, in step 101, the seat cushion SC based on the signal of the position sensor PS1.
Is located at a predetermined front-back position P,
When the motor 35 is not at the position P, the motor 35 is rotated forward or backward in step 102 according to the position. When the motor rotates and the seat cushion SC moves forward or backward, and reaches the position P, as shown by the solid line in FIG. 11, the process proceeds to step 103, where the motor 35 is stopped. When the seat cushion SC is rotated to the door opening side, the stop position P of the seat cushion SC is determined by the rotation of the cushion SC due to a vehicle body structure such as a center pillar or an instrument panel disposed before and after the cushion SC. Is set so as not to be disturbed.

Next, the routine proceeds to step 104, where the motor 48
And forward rotation drive to raise the front end of the seat cushion SC, and it is determined in step 10 whether the front end has been raised to a predetermined height position FV1 based on the output signal of the position sensor PS2. When the position FV1 is reached, the routine proceeds to step 106 where the motor 48 is stopped. Subsequently, the process proceeds to step 107, in which the motor 58 is driven to rotate forward to raise the rear end of the seat cushion SC, and in step 108, it is determined whether or not the rear end has been raised to a predetermined height position RV1 by the position sensor. Judgment is made based on the output signal of PS3, and when it reaches the RV1 position, the routine proceeds to step 109, where the motor 58 is stopped. By such a series of steps 104 to 109, the front and rear ends of the seat cushion SC rise from the position shown in FIG. 3 to the position shown in FIG. The raised position is set so that when the seat cushion SC is rotated to the door opening side, the rotating frame 14 does not hit the lower end of the rocker panel RP forming the door opening.

Subsequently, the routine proceeds to step 110, in which the motor 73 is driven to rotate forward to rotate the seat cushion SC toward the door opening side, and in step 111, it is determined whether or not the seat cushion has rotated a predetermined angle M by the position sensor PS4. The motor 73 is stopped at step 112 when the motor 73 rotates by the predetermined angle M. The predetermined angle M is set to about 90 degrees so that the seat cushion facing the front faces the door opening.

According to the series of steps 100 to 112 described above, the seat cushion which has been initially facing the front rises to a predetermined height while facing the front, and then rotates toward the door opening. Thereby, as shown in FIG. 5, the center cushion and the rocker panel RP
The vehicle rotates to a position facing the door opening without being hindered by the vehicle, so that the occupant does not need to change his or her body direction when getting off the vehicle.

Next, when the motors 35, 4
The operation procedures of 8, 58 and 73 will be described based on the flowchart shown in FIG.

First, when the get-off switch S2 is operated in step 120, the motor 73 rotates in reverse in step 121, and the seat cushion SC rotates in the vehicle interior direction.
Subsequently, at step 122, the position sensor PS
It is determined whether or not the rotation has been reversed by the predetermined angle M on the basis of the output signal of Step 4;
The process moves to 3 and the motor 73 is stopped. The seat cushion facing the door opening by the steps 120 to 123 so far faces the front while maintaining a predetermined height.

Subsequently, the routine proceeds to step 124, where the motor 4
8 is reversed, and at step 125, it is determined whether or not the front end of the seat cushion has been lowered to the predetermined position shown in FIG. 3 based on the output signal of the position sensor PS2. Motor 48 is stopped. Subsequently, the process proceeds to step 127, in which the motor 58 is rotated in the reverse direction. At step 128, it is determined whether or not the rear end of the seat cushion has been lowered to the predetermined position shown in FIG. 3 based on the output signal of the position sensor PS3. Step 129 when the position is reached
Then, the motor 58 is stopped.

Through a series of steps 120 to 129, the seat cushion SC facing the door opening is turned to the front as shown in FIG. 5, and the front and rear ends are lowered to the positions shown in FIG.

Thus, according to the present embodiment, the motor 35,
By cooperatively controlling the operations of the seat cushion SC and the rocker panel RP during the getting on and off,
The seat cushion SC is held at a predetermined height and rotated so as not to hit the seat cushion, and the seat cushion SC is set at a lower position during traveling than at the time of getting on and off, so that sitting comfort is not impaired.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a main part of a vehicle seat according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a rotating frame, a seat cushion, and a seat back of the seat.

FIG. 3 is a side view showing a front vertical mechanism and a rear vertical mechanism of the seat.

FIG. 4 is a side view showing a front vertical mechanism and a rear vertical mechanism of the seat.

FIG. 5 is a front view showing a front vertical mechanism and a rear vertical mechanism of the seat.

FIG. 6 is a sectional view showing a rotary frame driving mechanism of the seat.

FIG. 7 is an exploded perspective view showing a rotary frame driving mechanism of the seat.

FIG. 8 is a block diagram illustrating a functional configuration of a control unit that controls the seat track driving mechanism, the two vertical mechanisms, and the rotating frame driving mechanism in cooperation with each other.

FIG. 9 is a flowchart showing a control procedure by a microcomputer constituting the control means.

FIG. 10 is a flowchart showing a control procedure by the microcomputer.

FIG. 11 is a diagram illustrating the operation of the seat.

[Explanation of symbols]

11, 12: seat track, 11a, 12a: lower rail, 11b, 12b: upper rail, 13: base frame, 14: rotating frame, 15: ring plate,
16, 17 ... plate, 18A, 18B, 18C, 19
... Frames, 21A, 21B, 24A, 24B, 24C
... bolts, 21C ... rivets, 22, 23, 25, 26
... Bracket, 27 ... Reclining mechanism, 27A ... Arm, 27B ... Adjuster lever, 30 ... Electric seat track drive mechanism, 31, 32 ... Screw shaft,
33, 34 ... gear nut, 35 ... motor, 36, 37 ...
Transmission mechanism, 40 ... Electric front vertical mechanism, 41
... bearings, 42 ... screw shafts, 43 ... nut brackets, 44 ... stoppers, 45A, 45B, 45C ... links, 46A ... brackets, 46B ... seat brackets, 47 ... front vertical rods, 48 ... motors,
49: gear box, 50: electric rear vertical mechanism, 51: bearing, 52: screw shaft, 53: nut bracket, 54: stopper, 55A, 55B, 5
5C: link, 56A: bracket, 56B: seat bracket, 57: rear vertical rod, 58: motor, 59: gear box, 60: electric rotating plate drive mechanism, 61: base plate, 62: lower arm, 6
2b: gear, 63: inner plate, 64: upper plate, 64d: gear, 65A, 65B: bolt, 68
... rivets, 69, 72 ... shafts, 70, 71 ... gears, 73 ... motors, 74A ... leaf springs, 74B
... Washer, 74C ... C ring, 75 ... Sun gear, 76
... planetary gear, S1: getting off switch, S2: getting on switch, PS1, PS2, PS3, PS4 ... position sensor, IF1 ... input interface, IF2 ... output interface, CPU ... microcomputer, S
C: seat cushion, SB: seat back.

Claims (1)

(57) [Scope of request for utility model registration] 1. A pair of left and right seat tracks having a lower rail fixed to a vehicle body floor and an upper rail slidably mounted in the front-rear direction on the same rail, and a front end and a rear end mounted on the upper rails so as to be movable up and down. Base frame,
A front vertical mechanism for raising and lowering the front end of the base frame, a rear vertical mechanism for raising and lowering the rear end of the base frame, a rotating frame rotatably mounted on the base frame, and a rotating frame driving mechanism for rotating the rotating frame A seat cushion fixed to the rotating frame, a sensor for detecting a rotation angle of the cushion, a sensor for detecting a height of a front end of the seat cushion, a sensor for detecting a height of a rear end of the seat cushion, and Control means for controlling each operation of the front vertical mechanism, the rear vertical mechanism, and the rotary frame driving mechanism based on output signals of the sensors, so that the seat cushion rotates while maintaining a predetermined height. A rotating system for a vehicle, wherein each of the mechanisms is controlled in cooperation. Door.