JPS63130443A - Rotary vehicle seat - Google Patents

Abstract

PURPOSE:To achieve a sufficient rotary angle of a seat cushion, by making a sub-console and an inner buckle of a seatbelt constituting the rear half section of a center console retreatable to the outside of the rotary range when the seat cushion rotates. CONSTITUTION:A sub-console 71 is supported at the tips of parallel links 720a, 720b projecting farther rearwards than a console 7, and a rotary shaft 721a at the base of the link 720a is inserted into a mechanism box 730. The rotary shaft 721a is rotated by a motor through a warm and a warm wheel so as to rotate the link 720a from inclined state to standstill state. An inner buckle 72 is brought into standstill state by means of a coil spring. When the seat is used, the link 720a is brought into inclined state and the foot section 770 of the inner buckle 72 is pushed by the sub-console 71 and brought into inclined using position. When the seat cushion is rotating, the link 720a is brought into standstill state so as to bring the sub-console 71 into lifted retrieval position and the inner buckle 72 into standstill retrieval position.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a rotating vehicle seat that rotates to facilitate getting on and off a vehicle.

[Prior Art] ``The driver's seat of a vehicle is normally adjusted to maintain the optimum posture of the occupant during driving, so the occupant is forced to take a relatively uncomfortable posture when getting in and out of the vehicle. Therefore, a rotary seat has been proposed in which a spindle is provided on the vehicle floor, and the seat is rotatably supported inward and outward of the vehicle by the spindle, and the seat is rotated toward the entrance and exit, allowing smooth boarding and alighting. (Japanese Unexamined Patent Publication No. 58-214423).

[Problems to be Solved by the Invention] By the way, in the above-mentioned conventional rotating seat, when the seat is rotated, the seat cushion interferes with the center console provided between the passenger seat and the inner buckle of the seat belt, so There was a problem in that a sufficient rotation angle in the direction could not be secured.

In view of these problems, the present invention aims to provide a rotatable vehicle seat that can be rotated in the boarding and alighting direction at a sufficient angle without causing interference with the center console or inner buckle, and which allows smooth boarding and alighting. purpose.

[Means for Solving the Problems] The configuration of the present invention will be explained with reference to FIG. The vehicle rotates toward the outside of the vehicle, which is the boarding and alighting position. Above seat cushion S in use position
The devices 71, 72 that protrude into the rotation range are movable to retracted positions outside the rotation range. The above equipment 71.72
Drive means 720a, 720b (FIG. 7) and a control means 8 are provided for moving and driving the seat cushions S, and the control means 8 moves the drive means 720a, 720 when the seat cushion S rotates.
b is activated to move the devices 71, 72 to the retracted position.

[Operation and Effect] According to the above configuration, when the seat cushion rotates, the device is moved out of the rotation range, so the seat cushion rotates toward the entrance at a sufficient angle without causing interference with the device, and the seat cushion rotates smoothly. It is possible to get on and off the train.

[Embodiment In FIG. 1, the driver's seat of the vehicle is provided with a rotatable seat, and the seat cushion S of the seat is supported at its rear center by a support shaft 1 erected on the floor F, and is connected to the entrance B1.
It can be rotated freely in the direction (dashed line shown). A center console 7 is provided between the seat cushion S and the passenger seat, and the rear half of the center console 7 is an auxiliary console 71 having a storage box and the like. The sub console 71 is movable by a mechanism described later. An inner buckle 72 of a seat belt is provided near the sub-console 71, and this can also be moved together with the sub-console 71 by a mechanism to be described later. The sub-console 71 and the inner buckle 72 obstruct rotation of the seat cushion in the illustrated use position.

The rotation of the rotatable seat and the movement of the sub console 71 and the inner buckle 72 are controlled by the control device 8. The control device 8 receives signals from a seating sensor 3 embedded in the seat cushion, a door opening/closing angle sensor 4 that detects the opening/closing angle of the door B, an ignition switch 5, and a reset switch 6 for returning from an emergency stop. There is.

2 to 4 show details of the rotary seat drive mechanism. The rotary seat has an upper frame 101, a lower frame 102, and a rotary table composed of an upper plate 111 and a lower plate 112.

The rotary table has a structure in which the upper plate 111 and the lower plate 112 are rotatably joined with a sliding surface lubricated with grease or the like interposed therebetween.

The support shaft 1 projects downward from the upper plate 111 and is rotatable with respect to the lower plate 112. The upper frame 101 is connected to an upper plate (111), and the lower frame 102 is connected to a lower plate 112, respectively, and the upper frame 101 is rotatable about the support shaft 1 with respect to the lower frame 102.

A driving spur gear 120 (FIG. 4) is fixed to the support shaft 1. Further, the rotational drive motor 130 is fixed to the lower frame 102 via a stay 131, and its driving force is transmitted to the pinion 121 after being decelerated by a worm 132 and a worm wheel 133. When this pinion 121 meshes with the driving spur gear 120, driving force is transmitted to the support shaft 1. In addition, this worm 132
The self-lock feature locks the rotating seat when it is stopped.

In FIG. 3, the driving position limit switch 160 and riding position limit switch 161 are connected to the lower frame 10.
It is fixed at 2. These sumito switches 160
．． A rod 162 for operating the lower frame 161 is attached to the upper frame 101, and the tip of the rod 162 projects from the lower surface of the lower frame 102 through a groove 163 formed in the lower frame 102. The protruding portion of this rod 162 is connected to each lever 160a of the driving position limit switch 160 and riding position limit switch 161.
, 161a actuates the respective limit switches 160, 161.

The front and rear slide rails 170 slidably support the lower frame 102. The lever 171 is a known lock mechanism release lever attached to the slide rail 170.

The detailed structure of the door opening/closing angle sensor 4 is shown in FIGS. 5 and 6. A door check 401 is fixed to the door B, and a check lever 402 whose one end is pivotally attached to the vehicle body passes through the door check 401. Note that the door B is pivotally attached to the vehicle body with upper and lower hinges, and can rotate within the range A.

6 is a sectional view taken along the line Vl-VI in FIG. 5, and shows the other end of the check lever 402, that is, the door check 4,
A stopper 403 and a striker 404 are fixed to the end that penetrates into the inner space of the door B. Door B has a lever 4 that moves when pressed by a striker 404.
A linear potentiometer 411 with 10 is installed. The spring 412 moves the lever 410 to its original position (
The door check 4.01 side) is returned to its original position by its elastic force, and the shaft 413 is required as its guide. Door B
When the door is opened or closed, the check lever 402 activates the door check 4.
Enter and exit 01. Striker 404 and spring 412 move accordingly, causing lever 410 to move. As a result, the linear potentiometer 411 shows a resistance value corresponding to the opening/closing angle of the door B, and by measuring this resistance value, the door opening/closing angle is detected.

7 to 11 show a mechanism for moving the sub console 71 and the inner buckle 72. In FIG. 7, the sub-console 71 is supported by the tips of parallel links 720a and 720b that protrude rearward from the center console 7,
A rotating shaft 721a at the base end of the link 720a penetrates into the mechanism box 730 (FIG. 9). The rotating shaft 721
A worm wheel 731 is firmly attached to a, and this is a worm wheel 731 provided on the output shaft of a rotational drive motor 733.
It meshes with 32. Thus, the motor 733 moves the links 720a and 720b from the tilted state to the upright state (
(Figure 10, chain line).

At this time, in the tilted state, the limit switch 74 is
0 is activated, and in the upright state, the limit switch 741 is activated. In accordance with the upward rotation of the links 720a and 72ob, the sub-console 71 moves upward, and in the upright state of the links, moves to a retracted position directly above the center console 7 (FIG. 8).

On the other hand, as shown in FIG. 11, the base end of the inner buckle is fixed to one end of a rotating shaft 760, and a coil spring is attached to the outer periphery of the rotating shaft 760 to bias the inner buckle 72 to maintain it in an upright state, which is a retracted position. 761 is provided. A step 770 is provided at the other end of the rotating shaft 760, and the tip of the step 770 extends upward and forward of the vehicle (eighth
figure).

The step 770 contacts the lower surface of the sub-console 71 while moving to the lower use position, and rotates as one unit.
The inner buckle 72 is rotated to the inclined state, which is the use position, against the spring force of the coil spring 761 (Fig. 7).
.

FIG. 12 shows a block diagram of the control 1fl device 8. In the figure, 801 is a circuit that detects the door opening/closing angle, 802 is an input interface that inputs signals from each limit switch and sensor, 803 is a microcomputer, and 80
4 is an output interface that issues a rotation signal to each motor 130.733, and 805.806 is an output interface for each of the above motors 130.
．． This is a circuit that detects the current flowing through each of the circuits 733 and 733.

Hereinafter, the operation of the rotary seat of the present invention will be explained with reference to FIGS. 13 to 15. In step 3101, the operation of the ignition switch 5 is detected, and the ignition switch r is turned on.
ONJ, if the door opening/closing angle θd is greater than or equal to 001, which is sufficient for seat cushion rotation (steps 3102 and 310
3) Rotate the motor 733 and close the limit switch 7.
41 is activated (steps 3104.5107.5108).
. As the sub-console 71 moves, the inner hack lure 2 also moves to the upright retracted position, as described above. This is shown in FIG. If the motor current IC exceeds ICO while the motor 733 is rotating, the motor 733 is immediately stopped as a motor overload, and after the reset switch 6 is turned on, the process returns to step 3101 (step 3105.5).
106.311 L 3112>.

After confirming that door B is opened at a sufficient angle in step 3109.3110, step 5201.5207
．． At 8208, the seat cushion S is rotated to the outer end where the limit switch 161 is activated. At the time of this rotation, the sub-console 71 and the inner buckle 72 have moved to the retracted position, so the seat cushion S rotates at a sufficient angle toward the entrance/exit without interfering with them. Note that if the current ■r of the motor 130 exceeds Ir1 during rotation, the motor is considered to be overloaded and the motor is immediately stopped. Step 8202.5203.3213>
After the reset switch 6 is turned on, the process proceeds to step 3301 and subsequent steps (step 3214). Also step 5204.3
If the seating state changes in step 209 and step 320
5.5206.5212.3210,3211 to door B
If the board starts to close, the process proceeds to step 3301, indicating that boarding and alighting are completed or boarding and alighting is cancelled, respectively.

In step 5301, the motor 130 is reversely rotated to return the seat cushion S to the inner end where the limit switch 160 is activated (steps 3304 and 3305).
). Thereafter, the motor 733 is reversed to return the sub console 71 to the use position where the limit switch 740 is activated (steps 3306, 3309, and 3310). At this time, the inner buckle 72 also returns to the inclined use position.

Note that step 8302.3303.5311.531
2 is a step of detecting overload of the motor 130;
Steps 5307, 3308, 5313, and 5314 are steps for detecting overload of the motor 733.

As described above, in the rotary seat of the present invention, equipment such as the sub-console and inner buckle that protrude within the rotation range when the seat cushion is rotated is moved out of the rotation range, so that the seat cushion can be rotated sufficiently. It can be rotated toward the entrance at a suitable angle, allowing smooth boarding and alighting.

Note that, in addition to the sub-console, for example, a center pillar or the like may be moved.

A moving mechanism using hydraulic pressure, pneumatic pressure, etc. can be used to move the seat cushion, sub-console, and inner buckle, and a dedicated moving motor can also be provided for the inner buckle.

In addition to limit switches, potentiometers, pulse generators, etc. may be used to detect the movement position.

The rotary seat and the sub-console may be moved independently without being interlocked.

A pulse generator or the like can be used to detect the door opening/closing angle.

[Brief explanation of the drawing]

Figure 1 is a schematic plan view of a vehicle driver's seat equipped with a rotating seat, Figure 2 is a side view of the seat, Figure 3 is a bottom view of the seat,
Figure 4 is a sectional view of the seat rotation mechanism, and is IV-I in Figure 3.
V-line sectional view, Figure 5 is a plan view of the door sensor, Figure 6i;
lt is a sectional view taken along the line Vl-Vl in Fig. 5, Fig. 7 is a side view of the sub-console and the inner buckle in the use position, Fig. 8 is a side view of the sub-console and the inner buckle in the retracted position, Figure 9 is a sectional view of the inner buckle mechanism box, Figure 10 is its side view, Figure 11 is a front view of the inner buckle, Figure 12 is a block diagram of the control device, Figures 13 to 15. is a program flowchart, and FIG. 16 is a schematic plan view of the vehicle driver's seat when the rotary seat is rotated. 1... Support shaft 7... Center console 71... Sub-console (Ia unit) 72...
...Inner buckle (equipment) 720a, 720b...
... Parallel link (driving means) 770 ... Step 8 ... Control device (control means) B ... Boarding door B1 ... Boarding door F. ...Vehicle floor S... Seat cushion 1st - 3rd 4th? 55th 7F71 Figure 8 Figure 90! 1÷1 11th

Claims (3)

[Claims] (1) A seat cushion that is rotatably supported on a support shaft installed on the vehicle floor and rotates inward to the vehicle for the driving position and outward to the vehicle for the boarding and alighting position; A device that protrudes and is movable to a retracted position outside the rotation range, a driving means for moving and driving the device, and a control means for activating the driving means to move the device to the retracted position when the seat cushion is rotated. A rotary vehicle seat comprising: (2) The rotary vehicle seat according to claim 1, wherein the device is an auxiliary console constituting the rear half of the center console or an inner buckle of a seat belt. (3) The sub-console is supported at the tip of a parallel link serving as a driving means, and the parallel link is rotated by the control means to move the sub-console to a retracted position directly above the center console; The rotary vehicle according to claim 2, wherein when the step is pressed downward by contacting the lower surface of the sub-console, the step is removed and the inner buckle moves to a retracted position in an upright state. sheet.