JPH0627298U - Rotating seat for vehicle - Google Patents

Abstract

(57) [Summary] [Purpose] The seat cushion SC is a rocker panel RP.
To provide a rotating seat for a vehicle capable of rotating the seat so as not to hit the vehicle. [Structure] Upper rail 1 of seat tracks 11 and 12
1b and 12b, a base frame 13 in which a front end portion and a rear end portion are vertically movable, a front vertical mechanism 40 for moving a front end portion of the base frame 13 up and down, a base frame 1
A rear vertical mechanism 50 for raising and lowering a rear end of the rotary frame 3, and a rotary frame 1 rotatably assembled to the base frame 13.
4. The rotating frame drive mechanism 60 for rotating the rotating frame 14 is provided, and the seat cushion S is attached to the rotating frame 14.
With C fixed, each operation of the front vertical mechanism 40, the rear vertical mechanism 50, and the rotary frame drive mechanism 60 is linked and controlled so that the seat cushion SC rotates while maintaining a predetermined height.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicle rotating seat.

[0002]

[Prior art]

 As one type of vehicle rotating seat, Japanese Patent Laid-Open No. Sho 62-181931 discloses a seat track including a lower rail fixed to a vehicle floor and an upper rail slidably mounted on the lower rail and a vehicle body floor. There is disclosed a rotary seat including a rotary frame that is rotatably attached to both upper rails, and a seat body is fixed to the rotary frame.

According to this structure, 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 rotary frame assembled to the upper rail rotates along the vehicle body floor. Therefore, when opening and closing the door, the direction of the seat body can be changed from the front to the door opening side to facilitate the boarding and alighting flights.

[0004]

[Problems to be solved by the device]

 By the way, a rocker panel that constitutes a side member of a vehicle body is usually arranged at a lower edge portion of a vehicle door opening. Since this rocker panel protrudes upward from the vehicle body floor, the conventional rotary seat described above has a predetermined height so that the seat cushion does not hit the rocker panel when the seat is rotated toward the door opening side. Need to be set.

However, if the height of the seat cushion is set so that it does not hit the rocker panel, the position of the hip when seated may be too high, or the roof of the vehicle body may be positioned close to the overhead. , The comfort of sitting is impaired.

In view of the above problems, it is an object of the present invention to provide a rotating seat for a vehicle, which can rotate the seat to facilitate the operation of getting on and off without impairing the sitting comfort.

[0007]

[Means for Solving the Problems]

 A rotary seat for a vehicle according to the present invention comprises a pair of left and right seat tracks having an upper 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 with end portions that can be raised and lowered, a front vertical mechanism that raises and lowers the front end portion of the base frame, a rear vertical mechanism that raises and lowers the rear end portion of the base frame, and a rotatably attached base frame. A rotating frame, a rotating frame drive 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 portion of the seat cushion, Based on the sensors that detect the height of the rear end of the seat cushion and the output signals of each sensor. A front vertical mechanism, a rear vertical mechanism, and a rotary frame drive mechanism. The control means cooperates to control the respective operations of the front vertical mechanism, the rear vertical mechanism, and the rotary frame drive mechanism, and coordinately controls the respective mechanisms so that the seat cushion rotates at a predetermined height. It is characterized by

[0008]

[Action and effect]

 According to the present invention, both 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, the rotary frame is mounted on the base frame, and the seat cushion is fixed to the rotary frame. The seat cushion can be rotated toward the door opening side. In addition, control means is provided to coordinately control the rotating frame drive mechanism, front vertical mechanism, and rear vertical mechanism, so that the seat cushion can be held at a predetermined height so that it will not hit the rocker panel when the passenger gets on and off. , It is possible to lower the position of the seat cushion when driving than when rotating. Therefore, the seat can be rotated toward the door opening side at the time of getting on and off for the convenience of getting on and off without impairing the sitting comfort during traveling.

[0009]

【Example】

 The present invention will be described below with reference to the drawings. FIG. 1 shows a vehicle rotary seat according to a first embodiment of the present invention. The vehicle rotary seat includes a pair of left and right seat tracks 11, 12, an electric seat track drive mechanism 30, a base frame 13, an electric front vertical mechanism 40 for moving up and down a front end portion of the base frame 13, and a rear end portion of the base frame 13. An electric rear vertical mechanism 50 for moving up and down, a rotary frame 14 rotatably mounted on the base frame 13, and an electric rotary frame drive mechanism 60 for rotating the rotary frame 14 are provided, and each mechanism 30, 40, 50, The operation of 60 is linked and controlled by a control means described later according to a predetermined procedure.

The seat tracks 11 and 12 are composed of lower rails 11a and 12a fixed to the vehicle body floor and upper rails 11b and 12b slidably attached to the rails 11a and 12a, and a frame is provided between the upper rails 11b and 12b. 18A and the frame 18B are bridged and welded at both ends, and the frame 18C is welded to the frame 18A. A frame 19 is laid between the lower rails 11a and 12a and both ends thereof are welded.

The front end of the base frame 13 is assembled to the upper rails 11b, 12b by links 45A, 45B, 45C constituting the front vertical mechanism 40 so as to be able to move up and down, and the rear end thereof has a link 55A constituting the rear vertical mechanism 50, The upper rails 11b and 12b are vertically movable by 55B and 55C.

The rotary frame 14 is rotatably attached to the base frame 13 by a ring plate 15 and a plate 16 welded to the base frame 13 and a plate 17 welded to the rotary frame 14 which will be described later. As shown in FIG. 2, the front end of the seat cushion SC is fixed to the front end of the rotary frame 14 with the bracket 23 and the bolt 24A, and the rear end of the rotary cushion 14 is fixed with the bracket 25, the bracket 26, and the bolt 24B. The rear end of the seat cushion SC is fixed. The bracket 25 is provided with a known seat reclining mechanism 27. The seat back SB has a lower end right side attached to the bracket 26, and a lower end left side attached to the arm 27A of the seat reclining mechanism 27 with a bolt 24C. The seat back SB is rotated in the front-rear direction by operating the adjuster lever 27B. You can adjust the reclining angle.

The electric seat track drive mechanism 30 is rotatably assembled to the frame 18C and the frame 18B fixed to both upper rails 11b and 12b via bearings (not shown), and two screws extending along the upper rails 11b and 12b. Shafts 31 and 32, gear nuts 33 and 34 fixed to the frame 19 welded to the lower rails 11a and 12a and screwed to the screw shafts 31 and 32, a motor 35 fixed to the frame 18C, and an output shaft of the motor 35 fixed to the frame 18C. Transmission mechanisms 36 and 37 for connecting the screw shafts 31 and 32 are provided.

The electric drive mechanism 30 has such a configuration. When the motor 35 is driven in the normal direction or the reverse direction, the screw shafts 31 and 32 rotate and move forward and backward with respect to the gear nuts 33 and 34. Since the gear nuts 33, 34 are integrally fixed to the lower rails 11a, 12a via the frame 19, and the screw shafts 31, 32 are attached to the upper rails 11b, 12b via the frames 18A, 18B, 18C, The upper rails 11b and 12b move forward or backward along the lower rails 11a and 12a as the screw shafts 31 and 32 move forward and backward.

As shown in FIGS. 1, 3, 4, and 5, the front vertical mechanism 40 is rotatably assembled to the frame 18C via a bearing 41 and extends along the upper rail 12b. 42, a nut bracket 43 that is screwed into the screw shaft 42 so as to be able to move forward and backward, a stopper 44 that is fixed to the screw shaft 42 and that limits the amount of forward and backward movement of the nut bracket 43, and a link 45A that has a lower end portion rotatably connected to the nut bracket 43. , Is rotatably assembled to both upper rails 11b by brackets 46A, and the top end of the link 45A is welded and fixed to the front vertical rod 47, and the base end is welded and fixed to the end of the rod 47. A pair of left and right links 45B, and a link 45 rotatably connected to the tip of each link 45B. C, a seat bracket 46B connected to each link 45C, and a front vertical motor 48 fixed to the frame 18A. The front end of the base frame 13 is fixed to the seat bracket 46B with bolts 24D. The screw shaft 42 is drivingly connected to the output shaft of the front vertical motor 48 via a gear box 49.

The front vertical mechanism 40 has such a configuration, and when the front vertical motor 48 is energized, the screw shaft 42 rotates and the nut bracket 43 advances and retreats along the shaft 42. Along with this, since the link 45A rotates and the front vertical rod 47 rotates, the link 45B and the link 45C rotate in conjunction with this. As a result, the seat bracket 46B moves up and down, and the height of the front end portion of the base frame 13 changes.

The rear vertical mechanism 50 is rotatably mounted on the frame 18B via a bearing 51, and has a screw shaft 52 extending along the upper rail 12b, a nut bracket 53 screwed forward and backward to the screw shaft 52, and a screw shaft. A stopper 54 fixed to the shaft 52 to limit the amount of advance and retreat of the nut bracket 53, a link 55A whose lower end is rotatably connected to the nut bracket 53, and a bracket 56A that is rotatably assembled to both upper rails 11b. , A rear vertical rod 57 in which the upper end of the link 55A is welded, a pair of left and right links 55B in which the base end is welded and fixed to the end of the rod 57, and rotatably connected to the tip of each link 55B. 55C and the seat bracket 56B connected to each link 55C And a rear vertical motor 58 fixed to the frame 18B, and the rear end of the base frame 13 is fixed to the seat bracket 56B with bolts 24E. Further, the screw shaft 52 is drivingly connected to the output shaft of the rear vertical motor 58 via a gear box 59.

The rear vertical mechanism 50 has such a configuration. When the rear vertical motor 58 is energized, the screw shaft 52 rotates and the nut bracket 53 advances and retreats along the shaft 52. Along with this, the link 55A rotates and the rear vertical rod 57 also rotates, so that 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.

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

The electric rotary plate drive mechanism 60 has a base plate 61, a lower arm 62, a pair of inner plates 63 and an upper arm 64, as shown in the enlarged view of FIGS. 6 and 7. The lower arm 62 is fixed by a bolt 65A, and the lower arm 62 is fastened to the back surface side of the plate 16 by a bolt 65B.

The upper arm 64 is attached to the lower arm 62 with rivets 68. Since the shaft portion of the rivet 68 is erected on the lower arm 62 so as to be in sliding contact with the arcuate end surface 64b whose center of curvature is the through hole 64a provided in the central portion of the upper arm 64, the upper arm 64 is provided with the through hole 64a. It rotates along the rivet 68 as the center of rotation.

A shaft 69, a gear 70 that rotates integrally with the shaft 69, a gear 71 that meshes with the gear 70, and a shaft 72 that rotates integrally with the shaft 70 are attached to the upper surface side of the base plate 61. A motor 73 is attached to 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, and gears 62b and 64d are formed on the inner peripheral walls of the recesses 62a and 64c, respectively. Further, the shaft 69 penetrates through holes 62c and 64a provided at the centers of the bottoms of both arms 62 and 64, and is prevented from coming off by a leaf spring 74A, a washer 74B and a C ring 74C.

Both inner plates 63 are stored in the storage recesses 62 a and 64 c of the arms 62 and 64, and the sun gear 75 and three planetary gears 76 meshing with the sun gear 75 are attached to the plates 63. The sun gear 75 is fitted to the shaft 69 so as to rotate integrally, and the planetary gear 76 meshes with the gears 62b and 64d provided on the lower arm 62 and the upper arm 64.

According to this structure, when the motor 73 is energized, the gears 71, 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, 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, so that when the upper arm 64 rotates, the ring plate 15 also rotates. The rotating frame 14 integrated with this and the seat cushion SC attached to the frame 14 also rotate.

Next, FIG. 8 shows a functional configuration of a control means for controlling the respective operations of the seat track drive mechanism 30, the front vertical mechanism 40, the rear vertical mechanism 50, and the rotary frame drive mechanism 60 described above. The control means includes an exit 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 P S2 for detecting the height of the front end of the seat cushion SC, and a seat cushion SC. A position sensor PS3 for detecting the amount of change in the height of the rear end portion, a position sensor PS4 for detecting the rotation angle of the seat cushion SC, each switch S1, S2, and each position sensor PS1, PS2, PS3, PS4 and an input interface. In addition to being connected via IF1, the motor 35 of the seat track drive mechanism 30, the motor 48 of the front vertical mechanism 40, the motor 58 of the rear vertical mechanism 50, the motor 73 of the rotary frame drive mechanism, and the output interface IF2. Connected Microco And a computer CPU. The position sensors PS1, PS2, PS3, and PS4 are magnets attached to the output shafts of the motors 35, 48, 58, and 73, respectively, and the magnetic flux density generated by the position change of the magnets as the output shafts rotate. A well-known position sensor is used, which consists of a Hall element that detects changes in the output and a circuit that converts the output signal of the Hall element into a pulse voltage.

Therefore, each motor 35, 48, 58, 73 is driven by the microcomputer CPU based on the output signals of the switches S1, S2 and the position sensors PS1 to PS4 according to the flow chart shown as an example in FIG. The operation is controlled according to the flowchart shown in 10.

That is, when getting off the vehicle and operating the getting off switch S1 in step 100, it is determined in step 101 based on the signal from the position sensor PS1 whether or not the seat cushion SC is located at a predetermined front and rear position P. , If not in the position P, the motor 35 is rotated in the normal or reverse direction in step 102 depending on 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 moves to step 103 to stop the motor 35. When the seat cushion SC is rotated toward the door opening side, the stop position P of the seat cushion SC is changed by the vehicle body structure such as the center pillar and the instrument panel arranged in front of and behind the cushion SC. It is set so that rotation is not hindered.

Next, the routine proceeds to step 104, where the motor 48 is energized to rotate in the forward direction to raise the front end portion of the seat cushion SC, and at step 10, whether the front end portion has risen to a predetermined height position FV1 or not. Whether or not it is determined based on the output signal of the position sensor PS2, and when the position FV1 is reached, the routine proceeds to step 106, where the motor 48 is stopped. Subsequently, in step 107, the motor 58 is driven in the normal direction to raise the rear end of the seat cushion SC, and in step 108 it is determined whether the rear end has risen to a predetermined height position RV1. The determination is made based on the output signal of PS3. When the RV1 position is reached, the process proceeds to step 109 and the motor 58 is stopped. Through the series of steps 104 to 109, the front and rear ends of the seat cushion SC are lifted from the position shown in FIG. 3 to the position shown in FIG. 4 and stopped. This raised position is set so that when the seat cushion SC is rotated toward the door opening side, the rotating frame 14 does not contact the lower end portion of the rocker panel RP forming the door opening.

Next, in step 110, the motor 73 is driven in the normal direction 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. The determination is made based on the output signal of PS4, and when rotated by a predetermined angle M, the motor 73 is stopped in step 112. The predetermined angle M is set to about 90 degrees so that the seat cushion facing the front faces the door opening.

Through the series of steps 100 to 112 described above, the sheet cushion that was initially facing the front is lifted to a predetermined height while facing the front, and then is rotated toward the door opening. As a result, the seat cushion rotates to the position facing the door opening without being hindered by the center pillar and the rocker panel RP as shown in FIG. 5, so that the seated person does not need to change the body direction when getting off the vehicle. .

Next, the operation procedure of each motor 35, 48, 58, 73 when getting on the vehicle will be described based on the flowchart shown in FIG.

First, in step 120, when the getting-off switch S2 is operated, the motor 73 rotates in the reverse direction in step 121, and the seat cushion SC rotates in the in-vehicle direction. Subsequently, in step 122, it is determined whether or not the reverse rotation is performed by the predetermined angle M based on the output signal of the position sensor PS4. When the reverse rotation is performed by the predetermined angle M, the process proceeds to step 123 and the motor 73 is stopped. By steps 120 to 123 so far, the seat cushion facing the door opening faces the front while maintaining a predetermined height.

Then, in step 124, the motor 48 is rotated in the reverse direction, and in step 125 it is determined whether or not the front end portion of the seat cushion is lowered to the predetermined position shown in FIG. 3 based on the output signal of the position sensor PS2. Then, when the predetermined position is reached, the routine proceeds to step 126, where the motor 48 is stopped. Subsequently, in step 127, the motor 58 is rotated in the reverse direction, and in step 128, it is determined whether or not the rear end portion of the seat cushion is lowered to the predetermined position shown in FIG. 3 based on the output signal of the position sensor PS3. When the predetermined position is reached, the process proceeds to step 129 and the motor 58 is stopped.

Through the 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 both front and rear ends are lowered to the positions shown in FIG. 3 and stopped. .

However, according to the present embodiment, the operation of the motors 35, 48, 58, 73 is controlled in cooperation, so that the seat cushion SC has a predetermined height so as not to hit the rocker panel RP when getting on and off. The seat cushion S C is held and rotated, and the seat cushion S C is set to a position lower than that at the time of getting on and off when traveling, so that the sitting comfort is not impaired.

[Brief description of 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 cross-sectional view showing a rotary frame drive mechanism of the seat.

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

FIG. 8 is a block diagram showing a functional configuration of a control means for linking and controlling a seat track drive mechanism, both vertical mechanisms and a rotary frame drive mechanism.

FIG. 9 is a flowchart showing a procedure of control by a microcomputer which constitutes a control means.

FIG. 10 is likewise a flow chart showing a procedure of control by a microcomputer.

FIG. 11 is an operation explanatory view 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
... Frame, 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
... Bearing, 42 ... Screw shaft, 43 ... Nut bracket, 44 ... Stopper, 45A, 45B, 45C ... Link, 46A ... Bracket, 46B ... Seat bracket, 47 ... Front vertical rod, 48 ... Motor,
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
... Rivet, 69, 72 ... Shaft, 70, 71 ... Gear, 73 ... Motor, 74A ... Leaf spring, 74B
... washer, 74C ... C ring, 75 ... sun gear, 76
... Planetary gear, S1 ... Egress switch, S2 ... Embarkation switch, PS1, PS2, PS3, PS4 ... Position sensor, IF1 ... Input interface, IF2 ... Output interface, CPU ... Microcomputer, S
C ... Seat cushion, SB ... Seat back.

Claims (1)

[Scope of utility model registration request] 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 on the same rail in the front-rear direction, and a front end portion and a rear end portion capable of moving up and down on the both upper rails. Base frame,
A front vertical mechanism for raising and lowering a front end portion of the base frame, a rear vertical mechanism for raising and lowering a rear end portion of the base frame, a rotary frame rotatably mounted on the base frame, and a rotary frame drive mechanism for rotating the rotary 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 portion of the seat cushion, a sensor for detecting a height of a rear end portion of the seat cushion, The seat cushion is rotated while maintaining a predetermined height by providing control means for controlling the respective operations of the front vertical mechanism, the rear vertical mechanism, and the rotary frame drive mechanism based on the output signals of the respective sensors. A rotary system for a vehicle, characterized in that Door.