JPH0741811B2 - Seats for rotating vehicles - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a rotary vehicle seat that rotates to facilitate getting in and out of a vehicle.

[Prior Art] Since the vehicle seat is adjusted to keep the occupant's posture comfortable while the vehicle is traveling, the vehicle seat is forced to take a relatively uncomfortable posture.

Therefore, a support shaft is provided on the vehicle floor to support the seat, and the seat is rotated between the front direction and the entrance / exit direction in conjunction with opening / closing of the entrance / exit door to enable smooth entry / exit. A rotary type seat has been proposed (Japanese Patent Laid-Open No. 58-58).
-214423).

In the above proposed vehicle seat, the passage of the magnet that moves according to the opening / closing of the entry / exit door is detected by the hall element provided at a predetermined position so that the open / close signal is issued when the entry / exit door is opened by a certain angle. Is set to.

[Problems to be Solved by the Invention] By the way, in the above vehicle seat, if the angle at which the opening signal is issued is set to be small, there is an advantage that the seat can be swiftly rotated to the entrance / exit without opening the door larger than necessary. However, when the door is closed, the closing signal is not issued until the opening / closing angle of the door becomes small, so that the door and the seat interfere when the door is strongly closed.

An object of the present invention is to effectively solve such a problem associated with the setting of the door opening / closing angle for starting the seat rotation, and to promptly detect this when the door is opened or closed. A rotary vehicle seat capable of rotating the seat is provided.

[Means for Solving Problems] To explain the configuration of the present invention with reference to FIGS. 1 and 2, a support shaft 1 is erected on a vehicle floor F, and a seat cushion S is provided on the support shaft 1. It is rotatably supported and rotates between the front direction and the entrance / exit direction. A drive means 4 for rotationally driving the seat cushion S is provided, and an open / close detection means 7 for detecting the open / closed position of the entry / exit door B1 and a control means for controlling the operation of the drive means 4 by the output signal of the open / close detection means 7. 6
Is provided.

The opening / closing detection means 7 has a plurality of detection contacts 71, 72 which are sequentially operated when the door is opened or closed at a door open position where it does not interfere with the seat cushion S rotated in the direction of the lift. Then, the control means 6 causes the seat cushion S to rotate to the entrance / exit according to the output signals from the detection contacts 71 and 72 which are first activated after opening the door when the door is opened. contact
It is set so that the seat cushion S can be rotated to the front position by the output signals from 71 and 72.

[Operations and Effects] According to the vehicle seat having the above configuration, a plurality of detection contacts for detecting the open / closed position of the vehicle door are provided, and the seat cushion is activated by the output signal from the detection contact that operates earliest after opening the door when the door is opened. Since the seat cushion is rotated to the front position by the output signal from the detection contact that operates earliest after the door starts closing when the door is closed, the seat cushion responds well to the opening and closing of the door when getting in and out. It is possible to smoothly get in and out by rotating inward and outward, and especially when the door is closed a little strongly, there is no interference between the door and the seat cushion.

[Example] In Fig. 1, a seat cushion S of a driver's seat
Is rotatably supported by a support shaft 1 provided perpendicularly to a vehicle floor F and rotates between a vehicle front direction (upward in the drawing) and an entrance / exit direction (chain line in the drawing).
A rod-shaped member 2 is provided on the lower surface of the base member at a position eccentric from the center of rotation, while an engagement member 3 having an engagement surface described later is arranged on the floor side. The engaging member 3 is pivotally moved by a motor 4, and the motor 4 is connected to the control device 6 by a cable 61.

A seating sensor 51 embedded in the seat cushion S, an ignition switch 52 provided on a handle portion, and a door sensor 7 provided on an entry / exit door are connected to the control device 6.

The detailed structure of the door sensor 7 is shown in FIGS. 2 and 3.
In the figure, the door sensor 7 has a case body 74 fixed to the inner surface of the panel of the entrance / exit door B1, and the case body 74 is attached to the shaft 73.
Penetrates slidably. One end of the shaft 73 is connected to the body B, and when the door B1 is opened and closed, the shaft 73 moves left and right in the case body 74 accordingly. In the case body 74, the contacts 711, 7 are provided on the upper and lower surfaces of the shaft 73.
Limit switches 71 and 72 are provided by abutting against 21, and the upper and lower surfaces are cam surfaces 73a and 73b having a concave portion 731 extending from the middle in the longitudinal direction to the tip. The concave portion 731 is longer on the cam surface 73a, and when the door is opened, the limit switch 71 contacting the cam surface 73a operates to reach the concave portion 731 with a smaller opening angle.

The details of the rotating mechanism of the driver's seat are shown in FIGS. 4 and 5. 4 is a sectional view taken along the line IV-IV in FIG. 5, and FIG. 5 is a sectional view taken from above along the line VV in FIG.

In the figure, 11 is a parallel rail provided on the vehicle floor F in the vehicle front-rear direction (left-right direction in the figure), and a base plate 12 is slidably mounted on these rails 11.

Reference numeral 13 is a support plate for supporting the seat cushion S. The support shaft 1 and the rod-shaped member 2 are integrally projected from the support plate 1, the support shaft 1 and the base plate 12 are rotatably engaged, and the seat cushion S is the base. It is rotatable with respect to the plate 12.

15 is a lower rail fixed to the base plate 12, 14 is a support plate 13
The lower rail 15 and the upper rail 14 are slidably engaged with each other by the upper rail fixed to the upper rail to prevent the seat cushion S from rising.

Reference numeral 16 is a lower stopper fixed to the base plate 12, and 17 is an upper stopper fixed to the support plate 13, which engages when the seat cushion S faces the front and restricts further rotation of the seat cushion S. .

An engaging member 3 is arranged above the base plate 12 in parallel therewith. The engagement member 3 is a fan-shaped plate body, and the center portion thereof is coupled to the support shaft 1 so as to be relatively rotatable. The plate surface of the engaging member 3 is formed with an arc-shaped elongated hole 31 centered on the support shaft 1, and the distal end portion of the rod-shaped member 2 is inserted into the elongated hole 31. A tooth profile 32 is formed on the outer peripheral surface of the engaging member 3, and a pinion 41 is meshed with the tooth profile 32. Pinion
The motor 41 provided on the lower surface of the base plate 12 can be rotated forward and backward.

With the rotation of the pinion 41, the engaging member 3 rotates about the support shaft 1, and the engaging surfaces 31a and 31b at both ends of the elongated hole 31 contact and engage with the rod-shaped member 2 to move it. . As a result, the seat cushion S automatically rotates in and out of the vehicle.

There are three limit switches 18, 1 on the upper surface of the base plate 12.
9 and 20 are provided, and when the engaging member 3 is rotated to the outer end, the intermediate point, and the inner end, the above limit switches are respectively provided.
18 to 20 works. Then, when the engaging member 3 moves to the intermediate point (state shown in the drawing), the limit switch 19 is operated by the striker portion 33 protruding from the central portion of the engaging member 3.

FIG. 6 shows a hardware configuration of the control device 6. Device 6
Input interface 61, microcomputer 6
2. It consists of output interface 63.

An example of the operation of the vehicle seat will be described below with reference to FIG. 5, operation explanatory diagrams of FIGS. 7 to 9 and program flowcharts of FIGS. 10 to 13.

When the seat cushion S is in the position shown in FIG. 9, the ignition switch 5 is operated in step 101 of FIG.
When the parking of the vehicle is confirmed by “OFF” of 2, the door B1 is opened and the limit switch 71 is turned ON, the seating sensor 51
The operation of is checked (steps 102 and 103). If the seating sensor 51 is operating, exit the vehicle at step 30 in FIG.
If it is not operating, proceed to step 1 and proceed to step 201 in FIG.

When the occupant is seated, the motor 4 is rotated outward (step 301), and the engagement member 3 is rotated to an intermediate point where the limit switch 19 operates (steps 304, 30).
Five). While the motor 4 is rotating outside, the limit switch 7
When 1 is turned off, the process proceeds to step 401 in FIG. 13 (step 30
2) When the limit switch 72 is turned on, the process proceeds to the switch 308 (step 303). Even when the limit switch 72 is ON, the motor 4 is externally rotated (step 308) and the engaging member 3 is rotated to the intermediate point where the limit switch 19 operates (steps 309 and 310).

This is shown in FIG. In this state, the long hole 31 of the engaging member 3
The rod-shaped member 2 can move freely. As a result, the seat cushion S can be manually rotated freely, and the occupant twists his / her waist to rotate the cushion S toward the entrance / exit. This is shown in FIG. Next is the passenger getting off or the door
Whether B1 is closed or not proceeds to step 401 (steps 306, 30
7). If the door B1 is wide open, it branches in step 303 and proceeds to step 308 and below, so check the limit switch 72 that operates when the opening angle of the door B1 is large and proceed to step 401 (step 311). , 312).

In step 401, the motor 4 is internally rotated to rotate the engagement member 3 to the inner end where the limit switch 18 operates (steps 402 and 403). In this process, the engaging surface 31b of the engaging member 3 abuts and engages with the rod member 2, and the seat cushion S also rotates inward as the engaging member 3 moves, and the position shown in FIG. Return to.

At this time, if the occupant is seated, the process proceeds from this state to step 408, and if not, the process proceeds to step 405 (step 404). In step 405, the motor 4 is again rotated outward, and the engagement member 3 is rotated to the intermediate point where the limit switch 19 operates (steps 406 and 407). This state is shown in FIG.

If the occupant is not seated in FIG. 10 above, that is, if the occupant is about to board, step 20 in FIG.
At 1, the motor 4 is rotated outward, and the engaging member 3 is rotated to the outer end where the limit switch 20 operates (step
204, 205). If the limit switch 71 is turned off during the outer rotation of the motor 4, the process proceeds to step 401 (step 20
2). If the limit switch 72 is turned on, the process proceeds to step 211 (step 203). During this rotation, the engagement surface 31a of the engagement member 3 comes into contact with the rod-shaped member 2, and the seat cushion S rotates outward as the engagement member 3 moves.
Face the entrance / exit direction. This is shown in FIG. After the motor 4 stops at step 205, it immediately starts to rotate internally (step 206) and returns the engaging member 3 to the intermediate point as shown in FIG. 8 (steps 207, 208).

In this state, the seat cushion S can be manually rotated freely. Then, when the occupant sits down and twists his / her waist, the seat cushion S is accordingly rotated inward of the vehicle and returned to the front position (FIG. 5). If the door B1 is wide open, the operation is similar to the above after branching to step 211 (steps 213-217). When the limit switch 72 is turned off in step 212, the process proceeds to step 401. Step 209, 2
18 is a case where the door B2 is closed from the state shown in FIG. 8 without being seated, and when the door B1 is wide open, step 218
When the limit switch 72 is turned off at step 4,
Proceeding to 01, the seat cushion S can be quickly swung inward, and the rotation of the seat cushion S can be controlled by turning ON / OFF the limit switch 71 when the parking lot is narrow.

In step 401, the engagement member 3 is rotated to the inner end as described above, and when the occupant is seated, the rod-shaped member 2 is pressed by the engagement surface 31b as shown in FIG. 9, and the lower stopper 16 and the upper stopper 16 are engaged. The stopper 17 is pressed and the seat cushion S is locked.

Although two limit switches are used to detect the door opening / closing angle in the above-described embodiment, the present invention is not limited to this, and a plurality of limit switches of three or more can be provided, and a proximity switch or the like can be used instead of the limit switch. May be used.

The drive mechanism for the rotating seat may be hydraulic or pneumatic.

Further, instead of the ignition switch, a sensor may be provided on a parking brake, a shift lever, etc., and the stop of the vehicle may be confirmed by the state thereof. Alternatively, the stop of the vehicle may be confirmed using a vehicle speed sensor.

A limit switch for detecting the rotational position of the engaging member 3.
Instead of 18 to 20, a pulse generator or a potentiometer may be provided on the engaging member 3 or the motor 4.

Further, although the sheet that rotates by the engagement of the engaging member 3 and the rod-shaped member 2 is used, the sheet may be directly rotated by the driving of the motor 4 and may be a sheet that rotates automatically.

According to the vehicle seat of the above embodiment, when the door is opened, the output signal of the limit switch 71 that operates first after the opening is started causes the seat cushion to rotate in the entrance / exit direction, and the door is closed after the door is greatly opened. Occasionally, the output signal of the limit switch 72, which operates first after the start of closing, causes the seat cushion to rotate in the front direction, and even when the door is wide open, the seat cushion rotates with almost no delay in closing the door. It is possible to avoid the door interference and to get on and off the vehicle smoothly.

If the door opening angle is small, the limit switch 71
The rotation control of the seat cushion is performed only by the output signal of, and it is possible to smoothly get on and off in a narrow place.

[Brief description of drawings]

FIG. 1 is a schematic plan view of a vehicle driver's seat provided with a rotary seat, FIG. 2 is an overall cross-sectional view of a door sensor, FIG. 3 is a cross-sectional view thereof, and FIG. 4 is a partial cross-sectional side view of a seat. 5 is a cross section taken along line IV-IV in FIG. 5, FIG. 5 is a partial cross-sectional plan view of the seat, and a cross-sectional portion is a cross section taken along line VV in FIG. 4. FIG. 6 is a block configuration diagram of the control device. 7 to 9 are schematic plan views showing the rotation operation of the seat cushion, and FIGS. 10 to 13 are flowcharts of the control program. 1 ... Spindle 4 ... Motor (driving means) 6 ... Control device 7 ... Door sensor (opening / closing detection means) 71, 72 ... Limit switch (detection contact) 73 ... Shafts 73a, 73b ... Cam surface B1 …… Entrance / exit door F …… Vehicle floor S …… Seat cushion

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshikazu Ina 14 Iwatani, Shimohakaku-cho, Nishio-shi, Aichi Stock Company, Japan Automotive Parts Research Institute (72) Inventor Koji Imai 14 Iwatani, Shimohakaku-cho, Nishio-shi, Aichi Stock Association (56) References JP 61-163034 (JP, A) JP 61-21141 (JP, A)

Claims (2)

[Claims] 1. A seat cushion rotatably supported by a support shaft erected on a vehicle floor, and drive means connected to the seat cushion for rotationally driving the seat cushion between a front direction and an entrance / exit direction. In a rotary vehicle seat including an opening / closing detection means for detecting an opening / closing position of an entrance / exit door, and a control means for controlling an operation of the driving means in accordance with an output signal of the opening / closing door, the opening / closing detection means is provided in an entrance / exit direction. The door opening position that does not interfere with the seat cushion that has been rotated to has a plurality of detection contacts that are sequentially operated when the door is opened or closed, and when the door is opened, the detection means operates first after the opening is started. The seat cushion is rotated to the entrance and exit by the output signal from the contact, and when the door is closed, the output signal from the detection contact, which operates first after the start of closing, Rotating vehicle seat, characterized in that set to allowed to rotate the seat cushion in the front position. 2. The detection contact is composed of limit switches, and two of them are provided, and the contactors of these limit switches are integrally provided on the door, and different cam surfaces are formed on a shaft that moves in the longitudinal direction when the door is opened and closed. And one of the cam surfaces is formed so as to activate one of the limit switches when the door opening angle is small, and the other of the cam surfaces activates the other of the limit switches when the door opening angle is large. The vehicle seat according to claim 1, which is formed as described above.