JPS61207237A - Rotary car seat - Google Patents

Abstract

PURPOSE:To make people possible to board or alight to or from a car very easily and smoothly, by letting a seat cushion get pivotally supported on a sliding member on one side rotatably and lockably in position and also get supported on a sliding member on the other and shiftably in a car width direction. CONSTITUTION:On a car floor F, there are provided with parallel rails 1a and 1b in a longitudinal direction of a car, and each of sliding members 2a and 2b is installed in these rails. These sliding members 1a and 1b are made to shift along each of these rails 1a and 1b at the time of boarding and alighting by driving devices 3a and 3b installed in these sliding members. A seat cushion S1 is mounted on these sliding members 2a and 2b and the shaft member 41a projectingly installed in the lower surface is inserted into a round hole 21 installed in one sliding member 2a, thus it is pivotally supported rotatably and lockably in position. In addition, the other shaft member 41b is inserted into a long hole 22 installed in the other side sliding member 2b, thus it is pivotally supported rotatably and shiftably in a car width direction.

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 usually adjusted to maintain the optimum posture of the occupant during driving, and therefore, 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 that allows smooth boarding and exit by rotating the seat toward the entrance and exit when getting on and off the vehicle (JP-A-57-22923, JP-A-58
-214423@).

[Problems to be Solved by the Invention] By the way, the above-mentioned conventional seat has a rotation axis at the center of the seat or at the rear end of the seat, and in the former case, interference with the center console provided between the seat and the passenger seat is a problem. In the latter case, there was a problem of interference with the center pillar, and a sufficient rotation angle toward the entrance/exit direction could not be secured.

In view of these problems, the present invention has been developed by adding a special feature to the rotation mechanism of the seat, so that the seat can be sufficiently rotated toward the entrance/exit without interfering with other parts, allowing smooth boarding/exiting. The purpose of the company is to provide seats for type vehicles.

[Means for solving the problem] Parallel rails 1a and 1b are laid on the vehicle floor F (Fig. 1) in the longitudinal direction of the vehicle.
must be provided with sliding members 2a and 2b, respectively. The type 1 moving members 2a, 2b are moved by driving means 3a, 3b provided thereon along the respective rails 1a, Ib when getting on and off the vehicle.

A seat cushion S1 is placed on the sliding members 2a and 2b, and a shaft member 41a protruding from the lower surface of the seat cushion S1 is inserted into a round hole 21 provided in one of the sliding members 2a. It is rotatably and pivotally supported in a fixed position. Further, the seat cushion S1 is rotatably and movably supported in the vehicle width direction by inserting another shaft member 41b protruding from the lower surface of the seat cushion S1 into an elongated hole 22 provided in the other sliding member 2b. be.

In the figure, 81 is the center console, B2 is the center pillar, and B3 is the entrance/exit door.

[Operations and Effects] When riding, the sliding member 2a is moved forward (Fig. 7 (1)
, (2)) and the sliding member 2b is moved rearward ((2) and (3) in FIG. 7). These sliding members 2
As the seat cushions a and 2b move, the seat cushion S1 rotates around the shaft member 418 at a fixed position with respect to the sliding member 2a, and moves in the vehicle width direction with respect to the sliding member 2b. Rotates around 41b. As a result, the seat cushion S1 can largely rotate from the operating position ((1) in FIG. 7) toward the entrance without interfering with the center console B1 or the center pillar 82. When getting on the vehicle, by moving the sliding members 2a and 2b in the opposite direction to the above, the seat cushion S1 returns from the getting-on/off position ((3) in FIG. 7) to the driving position.

With a vehicle seat having such a structure, it is possible to get on and off the vehicle easily and smoothly.

[Example] In Fig. 1, parallel rails 1a and 1b are installed on the driver's seat floor F of the vehicle in the front-rear direction of the vehicle, and a sliding rail that can move once along these rails 1a and 1b is shown. Member 2a
, 2b, the seat cushion S1 of the driver's seat is placed. The seat cushion S1 has shaft members 41a and 41b protruding from two places in the width direction on the lower surface, and the shaft members 41a and 41b are inserted into the round hole 21 of the sliding member 2a and in the width direction of the sliding member 2b, respectively. It is inserted into the elongated hole 22 and connected thereto. The sliding member 2a12b is driven by the rail 'I' by drive motors 3a and 3b provided respectively.
a11b.

The rotation of the motors 3a, 3b is controlled by a control device 5 connected to them via a cable 51. The control device 5 includes a seating sensor 61 embedded in the center of the seat cushion S1, a reset switch 62 and a manual switch 63 provided on the outer surface of the seat cushion S1, an ignition switch 64 provided in the handle, and a door provided in the center pillar 82. The switch 65 etc. are connected.

The reset switch 62 is used to reset an emergency stop state when the seat is rotated, which will be described later, and the manual switch 64 is used to simultaneously move the sliding members 2a and 2b in parallel.

In addition, 81 in the figure is a center console, and B3 is a driver's seat entrance/exit door. Moreover, B2 is a seat back.

Figures 2 to 4 show the detailed structure of the driver's seat, with Figure 2 being a side view, Figure 3 being a bottom view, and Figure 4 being a sectional view taken along line IV-IV in Figure 3. It is. The parallel rails 1a and 1b formed into mountain shapes (only one is shown in FIG. 2) have rack parts 11 (third
) is provided, and the rack portion 11 has a toothed portion 11a formed on the opposite end surface. The sliding members 2a and 2b are plate-shaped (Fig. 4), and are slidably supported by U-shaped grooves formed on the lower surface of each outer edge and FM mounted on the upper surfaces of the rails 1a and 1b. .

Each of the sliding members 2a and 2b has a motor 3a on the bottom surface.
, 3b are provided, and the output shafts of each motor 3a, 3b are integrated with this (an oval gear box 31 (Fig. 3)).
protrudes inward. Worm 32 (
5) meshes with a worm wheel 33 provided within a gear box 31, and the rotating shaft of the worm wheel 33 protrudes above the gear box 31, to which a pinion 34 is fixed. This pinion 34 is meshed with the rack portion 11 of each of the rails 1a, 1b, and when the motors 3a, 3b rotate, the sliding member 2a,
2b moves on rails 1a and 1b.

Incidentally, rotation detection sensors 35a and 35b (only one shown in FIG. 5) using Hall elements or the like are provided in the gear box 31, and the sensors 31 are provided on the upper surface of the worm wheel 33. The passage of the magnetic pole of the magnet 36, which rotates integrally with the magnet 36, is detected and a rotation pulse signal is generated. The rotation pulse signal is input to the control device 5 (FIG. 1).

The sliding members 2a and 2b have a portion that is a rail.

A striker 23 is provided by bending the upper surface of the rails 1a and 1b, and the striker 23 contacts the limit switches 12a, 13a, 12b, and 13b provided on the rails 1a and 1b at the front and back movement limit positions of the sliding members 2a and 2b. to activate them. Limit switch 12a, 13a, 1
The output signals of 2b and 13b are input to the control device 5. The sliding members 2a and 2b also have round holes 21 and elongated holes 22 extending in the width direction, respectively, formed on their plate surfaces.

A support plate 4 is joined to the bottom surface of the seat cushion S1 (FIG. 4), and the lower surface of the support plate 4 has two portions in the width direction protruding downward to form shaft members 41a and 41b. The shaft member 41a is inserted into the round hole 21 of the sliding member 2a, and the shaft member 41b is inserted into the elongated hole 21 of the sliding member 2b.
It is inserted into 2. A retaining ring 42 is fitted onto the tip of each shaft member 41a, 41b. With this structure, when the sliding members 2a and 2b move relatively back and forth along the rails 1a and 1b, the seat cushion S1 rotates around the fixed shaft member 41a and moves along the elongated hole 22. The shaft member 41b rotates around the shaft member 41b.

The hardware configuration of the control device 5 is shown in FIG. In the figure, 51 is an input interface, 52 is a microcomputer, and 5
3 is an output interface; 54.55 is a counter that counts rotation pulses from the rotation detection sensors 35a and 35b to calculate the positions of the sliding members 2a and 2b; 56.57
is a detection circuit that detects the current value of each motor 3a, 3b.

Hereinafter, the operation of the vehicle seat will be explained according to the program flowcharts shown in FIGS. 8 to 14.

In FIG. 8, the door B3 is opened and the door switch 6 is opened.
5 is turned OFF (Step 101), and the ignition switch 64 is further turned OFF (Step 102>).
The position of the sliding member 2a12b at that time is read and stored (steps 103 to 106). The presence or absence of an occupant is detected by the seating sensor 61 (step 107). If there is no occupant, the riding program shown in FIG. 9 is executed, and if the occupant is present, the riding program shown in FIG. 10 is executed.

In FIG. 9, the sliding member 2a is moved forward until the moving end limit switch 12a is turned on (steps 201, 202, and 205). During this movement motor 3
The current of a ■ll11 is the allowable value ■.

If it exceeds (steps 203 and 204), the motor is considered overloaded and the emergency stop program shown in FIG. 12 is executed. Due to the forward movement of the sliding member 2a, the seat cushion S1 rotates from FIG. 7(1) to FIG. 7(2) in the direction of the entrance/exit. Subsequently, the sliding member 2b is moved backward until the moving end limit switch 13b is turned on (steps 206, 207, and 210). During this movement, the current 'm2 of the motor 3b reaches the allowable value I. (steps 208 and 209), the emergency stop program shown in FIG. 13 is executed. By moving the sliding member 2b backward, the seat cushion S1 is moved from FIG. As shown in (3), it further rotates toward the entrance/exit.

The seat cushion S1 rotates when the shaft member 41a rotates in a fixed position within the round hole 21 of the sliding member 2a, and the shaft member 4
By rotating the sliding member 1b while moving along the elongated hole 22 of the sliding member 2b (arrow in FIG. 7), the rotation is made at a sufficiently large angle without interfering with the center console B1 or the center pillar B2.

When the timer 1 starts at the outer rotation end of the seat cushion S1, the program for returning the seat cushion to its original position shown in FIG. Ru.

In the exit program shown in FIG. 10, the seat cushion S1 is rotated outward (step 303) after the margin time set by timer 2 has elapsed (steps 301 and 302).
．． 305.308.309.311.312〉. By providing the extra time, the seat cushion S1 is prevented from rotating at the same time as the passenger opens the door B3 or turns off the key switch 64 while the passenger is seated.

If the occupant gets off while the seat cushion S1 is rotating (
In steps 304 and 310), the home position return program of FIG. 11 is executed to immediately rotate the seat cushion S1 inward. Step 306.307.312
．． 313 is a step for detecting motor overload.

At the outward rotation end of the seat cushion S1, the timer 3 is started (step 313), and when that time-up (step 315) or the occupant is seated (step 314), the process proceeds to the original position return program (FIG. 11).

In FIG. 11, the sliding member 2b is moved forward and returned to the original position stored in step 106 (steps 401, 402, 403, and 406). This results in
The seat cushion S1 is different from FIG. 7(3) to FIG. 7(2).
), it rotates inward. Subsequently, the sliding member 2a is moved backward and returned to the original position memorized in step 104 (steps 407, 408, 409, 412).
.

As a result, the seat cushion S1 is roughly moved as shown in Fig. 7 (
2), it rotates inward and returns to its original position as shown in FIG. 7 (1). Steps 404, 405, 410, and 411 are steps for motor overload detection.

In the emergency stop programs shown in FIGS. 12 and 13, the movement of the sliding members 2a and 2b is stopped (step 501.6).
01), when the reset switch 62 is pressed (steps 502 and 602), the home position return program (11th
Proceed to Figure).

FIG. 14 shows a program that uses the manual switch 63 to simultaneously move the sliding members 2a and 2b back and forth. If neither the "front" nor the "rear" manual switch 63 is selected, the surrounding members 2a and 2b stop (steps 723 and 724). When "Front" is selected with the manual switch 63, both the sliding members 2a and 2b move to the forward movement limit position (steps 701-
707). If “rear” is selected, the sliding member 2a,
2b both move to the backward movement limit position (steps 716 to 722). During these movements, step 70
Overload of each motor 3a, 3b is detected at 8 to 711,
When there is an overload, the movement of the sliding members 2a, 2b is stopped (steps 712 and 713). To return after an emergency stop, press the reset switch 62 (step 714).

In this manner, the front and rear positions of the seat can be optimally adjusted using the manual switch 63.

As described above, the rotating vehicle seat of the present invention automatically rotates toward the entrance and exit when getting on and off, and this rotation is performed at a sufficient angle without interfering with other members, so it is extremely smooth. It is possible to get on and off the train.

In the above embodiment, the sliding members 2a, 2 when rotating the seat
The movement of b may be performed at the same time.

In the above embodiment, the return position of the seat is set to the position immediately before the rotation starts, but the occupant can also select the optimum return position using a selection switch or the like.

The confirmation of the position for getting on and off the vehicle is not limited to the door switch or ignition switch as in the above embodiment, but may also detect the state of the parking brake or shift lever, for example.

[Brief explanation of drawings]

Figure 1 is a plan view of the vehicle driver's seat, Figure 2 is an overall side view of the seat, Figure 3 is a bottom view of the seat, and Figure 4 is the IV of Figure 3.
5 is a sectional view taken along line V-■ in FIG. 3, FIG. 6 is a hardware configuration diagram of the control device, and FIG. 7 is a schematic plan view showing rotation of the seat. Figures 8 to 14
The figure is a flowchart of a computer program. B1... Center console B2... Center pillar B3... Passage door F... Vehicle floor Sl... Seat cushion S2...・・Seat back '+a
, 1b...Rail 2a, 2b...Sliding member 21...Round hole 22...Long hole 3a, 3b...For driving Motor (drive means) 5.
...Control device 41a, 41b...Shaft member Fig. 3 Fig. 5 Fig. 8 Fig. 9

Claims (2)

[Claims] (1) Parallel rails installed on the vehicle floor in the front-rear direction of the vehicle, sliding members provided to be able to slide along each of the parallel rails, and the sliding members moved when getting on and off the vehicle. and a seat cushion placed on both sliding members, the seat cushion being rotatably and fixedly supported on one of the sliding members, and rotatably and pivotally supported on the other sliding member. A rotating vehicle seat characterized by being pivotally supported so as to be movable in the width direction of the vehicle. (2) One side of the sliding member is provided with a round hole, into which the shaft member protruding from the bottom surface of the seat cushion is inserted, and the other sliding member is provided with an elongated hole in the width direction, into which the shaft member protruding from the bottom surface of the seat cushion is inserted. The rotary vehicle seat according to claim 1, further comprising another shaft member protruding from the lower surface of the seat cushion.